Emerald_MD_MD579919 714..734Management Decision A decision making
model for selecting start-up businesses in a government venture
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in a government venture capital scheme
Eric Afful-Dadzie Faculty of Applied Informatics,
Tomas Bata University in Zlin, Zlin, Czech Republic, and Anthony
Afful-Dadzie
Business School, University of Ghana, Accra, Ghana
Abstract Purpose – The purpose of this paper is to propose an
intuitionistic fuzzy technique for order preference by similarity
to ideal solution (TOPSIS) multi-criteria decision making method
for the selection of start-up businesses in a government venture
capital (GVC) scheme. Most GVC funded start-ups fail or
underperform compared to those funded by private VCs due to a
number of reasons including lack of transparency and unfairness in
the selection process. By its design, the proposed method is able
to increase transparency and reduce the influence of bias in GVC
start-up selection processes. The proposed method also models
uncertainty in the selection criteria using fuzzy set theory that
mirrors the natural human decision-making process.
Design/methodology/approach – The proposed method first presents a
set of criteria relevant to the selection of early stage but
high-potential start-ups in a GVC financing scheme. These criteria
are then analyzed using the TOPSIS method in an intuitionistic
fuzzy environment. The intuitionistic fuzzy weighted averaging
Operator is used to aggregate ratings of decision makers. A
numerical example of how the proposed method could be used in GVC
start-up candidate selection in a highly competitive GVC scheme is
provided. Findings – The methodology adopted increases fairness and
transparency in the selection of start-up businesses for fund
support in a government-run VC scheme. The criteria set proposed is
ideal for selecting start-up businesses in a government controlled
VC scheme. The decision-making framework demonstrates how
uncertainty in the selection criteria are efficiently modelled with
the TOPSIS method. Practical implications – As GVC schemes increase
around the world, and concerns about failure and underperformance
of GVC funded start-ups increase, the proposed method could help
bring formalism and ensure the selection of start-ups with high
potential for success. Originality/value – The framework designs
relevant sets of criteria for a selection problem, demonstrates the
use of extended TOPSIS method in intuitionistic fuzzy sets and
apply the proposed method in an area that has not been considered
before. Additionally, it demonstrates how intuitionistic fuzzy
TOPSIS could be carried out in a real decision-making application
setting. Keywords Decision making, Start-up businesses, Government
venture capital (GVC), Intuitionistic fuzzy TOPSIS (IFS) Paper type
Research paper
Management Decision Vol. 54 No. 3, 2016 pp. 714-734 ©EmeraldGroup
Publishing Limited 0025-1747 DOI 10.1108/MD-06-2015-0226
Received 10 June 2015 Revised 7 October 2015 5 January 2016
Accepted 11 January 2016
The current issue and full text archive of this journal is
available on Emerald Insight at:
www.emeraldinsight.com/0025-1747.htm
This work was supported by Grant Agency of the Czech Republic –
GACR P103/15/06700S, further by financial support of research
project NPU I No. MSMT-7778/2014 by the Ministry of Education of
the Czech Republic and also by the European Regional Development
Fund under the Project CEBIA-Tech No. CZ.1.05/2.1.00/03.0089.
Further, this work was supported by Internal Grant Agency of Tomas
Bata University under the project No. IGA/FAI/2015/054.
714
)
1. Introduction Venture capital (VC) investment is proving to be
the mainstay in the lives of start-up businesses around the world,
especially those in the “high-tech” industry. Evidence from the
USA, Europe, China, India, Canada and Israel, points to a gradual
global acceptance of VC support for early stage but high-potential
businesses. In 2013, global VC investment was estimated at US$48.5
billion (Ernst & Young, 2014). According to Bertoni et al.
(2011), Gompers and Lerner (2004), Chemmanur et al. (2011) and
Alperovych et al. (2015), there is enough evidence to show that the
commercial success rates of start-up businesses that receive
support from VC far outweigh those that do not receive any such
supports. However, in recent times, due to very strict demands on
start-up businesses from Private Venture Capitalists (PVCs) and the
apparent lack of opportunities at securing financial support
through traditional investment sources, many governments around the
world have joined the fray as far as VC investment is concerned
(Bertoni and Tykvová, 2015; Nkusu, 2011; Colombo et al., 2014). For
instance, in Europe, a total of 40 per cent of all VC investments
in 2013 were reported to have come from their governments.
Similarly in the USA, the federal government’s Small Business
Innovation Research programme is the single largest investor of
early stage innovations (Ernst & Young, 2014; Audretsch, 2003;
Lerner, 2000). Government venture capital (GVC) is also quite
popular in Brazil, Russia, India, China and South Africa and in
developing countries where private VC funding are hard to come by
compared to what exist in the USA and Europe (Ernst & Young,
2014). In spite of the growing interests in GVCs, many studies
report of a worrying trend of GVC supported early stage businesses
underperforming against their counterparts that obtain funding from
PVCs (Brander et al., 2008; Luukkonen et al., 2013; Grilli and
Murtinu, 2014; Alperovych et al., 2015; Bertoni and Tykvová, 2012).
A number of reasons for the underperformance has been offered. Some
authors assert that the selection process in GVC schemes lack the
rigorousness demanded in PVC schemes (Christofidis and Debande,
2001; Leleux and Surlemont, 2003). Many also cite the undue
influence of political and pressure groups (usually aligned with
governments) as a major reason for the poor performance of GVC
funded start-up businesses (Knoesen, 2009; Nattrass and Seekings,
2001; Iheduru, 2004). Others also argue that such underperformance
is exacerbated by the lack of models that explicitly feature
important aspects of the selection process such as uncertainties in
some of the evaluation criteria (Zacharakis and Shepherd, 2001;
Muzyka et al., 1996; Zacharakis and Meyer, 2000). This paper
addresses the concerns of such authors and proposes a model for the
evaluation and selection of start-up businesses in a GVC scheme
that incorporates uncertainties in the selection criteria. To do
this, the paper first contrasts GVCs with PVCs for a better
understanding of their differences and subsequently, the reasons
why GVC funded start-ups usually underperform against PVC funded
start-ups.
1.1 PVCs vs GVCs The main objective of a PVC firm is to generate
enough returns for its investors and maximize their value typically
above the level of the public equity markets (Mulcahy, 2014). The
fear of losing investors, guide PVC firms to avoid favouritism in
the selection of start-up businesses. In view of this, a candidate
start-up technology business must have high potential to succeed
and demonstrate the ability to make significant profits over a
period of time. With this in mind, PVCs usually look out for early
entrepreneurs that can deliver impressive growth within specific
time period, typically not more than six years (Da Rin et al.,
2011).
715
)
To reduce the chances of failure, PVC funded start-up businesses
typically undergo lengthy and demanding screening processes
(Landstrîm, 2007; Lerner, 2002). PVCs also place greater emphasis
on the experience of the management team and often demand for a
representation on the management board of the start-up firm so as
to be able to monitor and prevent wasteful spending that may derail
the development and growth of the business (Chemmanur et al., 2011;
Lerner, 2002). PVCs are prevalent in the information systems
sector, and also in some specific health sectors such as the
pharmaceutical industry (Lerner, 2002).
GVCs on the other hand, mostly operate in sectors that normally
lack VC financing such as education, environment and health sectors
(Lerner, 2002). They usually fund start-ups that possess promising
technology beneficial to society but which lack the necessary
funding to bring the technology to fruition. In this regard,
technologies with potential to spawn positive externalities, such
as those with prospects of stimulating growth in other sectors,
have higher chances of attaining GVC funding (Lerner, 2002). Since
the main objective of a GVC investment is welfare maximization to
the state, GVCs demand rates of returns tend to be far lower than
that of a typical PVC (Griliches, 1992). As a result, a GVC
investment might not yield direct monetary profit to the state and
could still be considered a success. GVC investments are usually
subject to statutory terms and conditions in respect to the type of
investments and the manner at which the investment is carried out
(Landstrîm, 2007). Most often however, such terms and conditions
are less stricter than those of PVCs.
Using data from the VC industry in Belgium, Alperovych et al.
(2015) finds that PVC-backed firms are more efficient than
GVC-backed firms. More tellingly, they find that GVC-backed firms
are less efficient than non-VC-backed firms. PVC-backed companies
also mostly meet exiting deadlines and conditionalities than
GVC-backed companies (Cumming et al., 2014; Chemmanur et al., 2011;
Luukkonen et al., 2013; Bertoni and Tykvová, 2012; Brander et al.,
2008). Grilli and Murtinu (2014) show in their study that PVC
funding leads to increase growth in new start-ups than GVC funding.
Lerner (2002) also finds that a prevalent characteristics among
underachieving start-up companies is that most are funded through
research grants from government agencies.
A number of factors could account for the gap in performance. Some
of these are low capital recovery rates and undefined exit paths
for candidate start-up businesses in GVC schemes (Biekpe, 2004). In
addition, unlike PVCs, GVCs usually do not require a position on
the management team of the start-up company. The lack of
involvement by GVCs in the management team (and therefore lack of
proper monitoring) of the start-up company is believed by many as
one of the main reasons why GVC funded start-ups underperform
compared to PVC funded start-ups (Chemmanur et al., 2011; Cumming,
2007). Without proper monitoring, it is easy for a start-up firm to
engage in over spending or lose focus and venture into business
programmes unrelated to the original business idea. Furthermore,
Christofidis and Debande (2001) observed that most GVCs are run by
inexperienced civil servants who are less motivated unlike their
counterpart fund managers at PVCs. Leleux and Surlemont (2003);
Meyer and Mathonet (2011) explain that the seeming lack of
motivation of government staff at GVCs, is because they do not
directly share in returns that accrue to the GVCs they manage.
There are also the criticisms of an apparent lack of robust
selection criteria (Bertoni et al., 2011), lack of due diligence in
the selection process (Baeyens et al., 2006), poor programme design
and implementation challenges (Lerner, 2009) in GVCs. The award of
GVC funds to start-ups, unlike in PVCs, is prone to biases
and
716
)
favouritism (which consequently could lead to failure) since
selection could be influenced by powerful interest groups aligned
to governments and politicians who may seek to direct the award of
GVC funding in a manner that benefits themselves (Cumming, 2007;
Lerner, 2002) and their constituents. This is especially the case
in developing countries where selection of candidates for such
capital financing schemes are sometimes clouded by political,
tribal and social affiliations (Nkusu, 2011). According to
Pina-Stranger and Lazega (2011) and Sorenson and Rogan (2014),
these challenges could be avoided or their impact mitigated through
a transparent decision making process (devoid of personal ties and
affiliations) for selecting start-up businesses.
These observations have led to a renewed interests in research
aimed at improving the performance of GVCs (Munari andToschi,
2015). One of such interest is a mechanism for a transparent and
efficient decision making process for determining the commercial
viability and the eventual selection of a technology start-up
business in a government-run VC.
Any such decision-making mechanism must be able to address the
problems listed above including that of bias and favouritism. More
importantly, the mechanism must place greater importance on the
need for effective management team for the success of the
start-up.
1.2 Research gap Some non-fuzzy decision-making models for
evaluating and selecting start-ups in VC financing schemes have
been proposed. Woike et al. (2015) used computer simulation to
study the impact of different strategies on the financial
performance of VCs. Riquelme and Rickards (1992) proposed a
self-explicated, hybrid conjoint model to aid the selection of
start-ups for financing in a VC scheme. These non-fuzzy methods
rely on historical data of past beneficiaries to arrive at a
decision. This approach may not all the time be appropriate for
assessing and selecting early stage entrepreneurs that have little
or no past data and might lead to sub-optimal decisions. Since
future values of data needed for evaluation are uncertain at the
time of selection, fuzzy models that have the ability to explicitly
consider uncertainty in the models might be appropriate.
The main objective of this paper is therefore to propose a fuzzy
multi-criteria decision making (MCDM) model for the selection of
start-ups in GVCs that addresses the obvious uncertainty problems
in such decision problems. It is also hoped that the proposed
approach would help generate interest regarding research in
decision models for VC selection problems.
In our search of literature, only the works of Zhang (2012), and
Aouni et al. (2014), attempt to use fuzzy theory for selecting
start-up businesses in a VC. Aouni et al. (2014) used a fuzzy goal
programming approach to model uncertainty. However, such models
cannot accommodate qualitative factors such as leadership
experience and product quality. Zhang (2012), considers fuzziness
but only in the weights of the evaluators and not in the values for
the competing start-up candidates. Zhang (2012) also does not
explicitly model uncertainty but instead attempts to overcome it
using entropy technique to determine the weights. The model by
Zhang (2012) is a combination of an optimization and a
multi-attribute model that seeks to select a candidate based on
maximizing risk-adjusted returns. In contrast, our proposed
approach uses a multi-attribute model to generate a composite index
that however takes qualitative factors as well as a “more is
better” and a “less is better” criterion into account. By
considering uncertainties directly in the values for assessment,
the proposed intuitionistic fuzzy technique for order preference by
similarity to ideal solution (TOPSIS) framework is thus more
efficient at modelling the natural thought processes of
717
)
humans in decision making. The proposed decision framework also
includes selection criteria specially tailored to address
challenges faced by GVCs such as bias and favouritism, as well as
ascertaining the effectiveness of the management team of the
start-ups. The proposed method in particular can be used to help
address some of the challenges encountered in the selection of
start-up businesses especially in a government high priority area
such as in information systems/information communication technology
(IS/IT) sectors. This is because selecting the ideal start-up to
support in IS/ IT areas can be very challenging and complex since
most of the criteria involved are subjective or hold uncertain data
(Pina-Stranger and Lazega, 2011).
The rest of the paper is organized as follows. First, an elaborate
selection criteria that hinge on the attainment of the objectives
of a GVC and the success of the start-up business culled from
literature is introduced. This is followed by a methodology
comprising of an introduction to classical fuzzy set theory and its
extension into intuitionistic fuzzy sets (IFS), especially as used
in decision making. Next is a systematic outline with definitions
and formulas of intuitionistic fuzzy TOPSIS method to help select
potential candidates in a highly competitive but limited funding
situation in a GVC programme. Finally, a numerical example of how
intuitionistic fuzzy TOPSIS could be used to rank and select
high-potential start-ups in a government backed VC is
illustrated.
2. GVC funded start-up business selection criteria Several authors
have researched into the main criteria used by venture capitalists
to evaluate start-up businesses. Table I summarizes major works on
these criteria in the literature, particularly those relevant to
GVC schemes. The criteria under entrepreneur/ team personality,
entrepreneur/team experience, and product or service potential,
model qualitative attributes whiles the criteria under financial
characteristics, market characteristics and social
impact/contribution model quantitative criteria. As can be
perceived from the criteria, the relevant values needed for
evaluation cannot be determined in the present time but must be
estimated based on the judgement of experts. In classical decision
analysis, possible outcomes with their probabilities of occurrence
would be considered in the final decision making. In the case where
qualitative criteria are present, such uncertainty can be modelled
using fuzzy theory that is able to accommodate both qualitative and
quantitative criteria. The next section gives brief introduction to
fuzzy theory and its extension to intuitionistic fuzzy
TOPSIS.
3. Methodology 3.1 Modelling subjectivity with IFS According to
Hisrich and Jankowicz (1990) and Mitchell et al. (2005), venture
capitalists use many subjective criteria and intuition in their
decision making. In view of this, research must focus on developing
methods that model the intuition and the subjectiveness in the
selection process. This section introduces the fuzzy concept that
is generally used to model intuition and subjectivity in human
decision making processes such as that of start-up business
selection. The notion of fuzzy set theory was proposed by Zadeh
(1965) as a mathematical construct to help deal with issues of
uncertainty, subjectivities, vagueness and imprecision in human
judgments (Afful-Dadzie et al., 2014). Since the conception of
fuzzy set theory, it has successfully been applied in many areas
including situations that demand efficient modelling of human
decisions and judgments (Wang, 1999; Klir and Yuan, 1995). In
addition, several extensions and
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)
modifications of the original fuzzy concept have been proposed to
address different instances of uncertainty with regard to a
decision maker’s judgment. One of such extensions is Atanasov’s IFS
proposed in 1986 to improve the modelling of uncertain information
(Atanassov, 1986). For instance in a competitive start-up
businesses selection programme, IFS helps decipher how decision
makers make their judgments
Major decision criteria Sub-criteria Literature support of
criterion importance
Entrepreneur/team personality
MacMillan et al. (1985), Zacharakis and Shepherd (2001)
C2: Vision MacMillan et al. (1985) C3: Readiness Bachher and Guild
(1996), Mason and Stark (2004) C4: Integrity, honesty Bachher and
Guild (1996), Mason and Harrison (2002) C5: Commitment Van
Osnabrugge and Robinson (2000), Sudek (2006) C6: Team
understanding/ co-operation
Entrepreneur/team experience
C7: Track record Haines et al. (2003), Flynn (1991) C8:
Technical
qualification Bachher and Guild (1996), Franke et al. (2006)
C9: Business qualification
C10: Market familiarity/ understanding
Product or Service Potential
MacMillan et al. (1985), Mason and Stark (2004)
C12: Patentability Tyebjee and Bruno (1984), MacMillan et al.
(1985) C13: Product
maturity Kakati, (2003), Alperovych et al. (2015)
C14: Product quality Kakati, (2003), Mason and Harrison (2002)
Financial characteristics
C15: Level of riskiness
C16: Cost of investment
Haines et al. (2003), Feeney et al. (1999)
C17: Capital recovery Muzyka et al. (1996), Mason and Stark (2004)
C18: Exit strategy Feeney et al. (1999), Fried and Hisrich
(1994)
Market characteristics C19: Market volume Tyebjee and Bruno (1984),
Mason and Stark (2004) C20: Market growth Tyebjee and Bruno (1984),
Mason and Stark (2004) C21: Market access Tyebjee and Bruno (1984),
Mason and Stark (2004) C22: Market
acceptance Tyebjee and Bruno (1984), Mason and Stark (2004)
C23: Competitive strength/ advantage
Societal impact/ contribution
C24: Employment creation
Haines et al. (2003), Van Osnabrugge and Robinson (2000)
C26: Potential growth into an industry
Feeney et al. (1999), Haines et al. (2003)
C27: Environmental protection
Table I. Criteria for selecting start-up business in a
government-run
venture capital
)
by revealing how much of approval, disapproval and doubt in each
decision maker’s rating. Generally, IFS differs from classical
fuzzy sets in terms of the approach in that, IFS introduces three
functions that express the degree of membership, non-membership and
hesitancy (Chen, 2014). Intuitively, the IFS approach gives a
different dimension to human decision modelling by introducing
three states of fuzzy constructs to characterize the extent to
which decision-makers support, oppose and are hesitant or neutral
about their decisions (Li, 2014). In other words, the IFS approach
helps to quantify the extent of satisfaction, dissatisfaction and
hesitancy in a decision maker’s judgment. In the following, basic
definitions of fuzzy set and IFS are presented:
Definition 1. Fuzzy sets.
In classical fuzzy set, a fuzzy set A in X is characterized by
membership functions expressed as A¼ {⟨x, μA(x)⟩|x∈X} where μA:
X→[0, 1] describes the membership function of the fuzzy set A
within the interval of [0, 1].
Definition 2. IFS.
In IFS, a set A in X is defined asA¼ {⟨x, μA(x), vA(x)⟩|x∈X} where
μA(x), vA(x): X→[0, 1], respectively represent membership and
non-membership functions on condition that 0 μA(x)+vA(x) 1.
Additionally, IFS introduces a third construct πA(x), the
intuitionistic index which expresses whether or not x belongs to
A:
pA ¼ 1mA xð ÞvA xð Þ (1)
The intuitionistic index in Equation 1 measures the hesitancy
degree of element x in A where it becomes obvious that 0 πA(x) 1
for each x∈X. A small value of πA(x) implies that information about
x is more certain (Boran et al., 2009). On the other hand, a higher
value of the hesitancy degree πA(x) means the information that x
holds is more uncertain. An intuitionistic fuzzy set can therefore
fully be defined as:
A ¼ x; mA xð Þ; vA xð Þ; pA xð Þ xAXj
(2)
where μA∈[0, 1]; vA∈[0, 1]; πA∈[0, 1]. In summary, the three
constructs ⟨x, μA(x), vA(x), πA(x)⟩ basically reveal the extent
of
satisfaction, dissatisfaction and hesitancy in a decision maker’s
assessment of an alternative or criteria.
Definition 3. Basic arithmetic operations of IFS.
Let A¼ {⟨x, μA(x), vA(x)⟩|x∈X } and B¼ {⟨x, μB(x), vB(x)⟩|x∈X } be
two intuitionistic fuzzy numbers (IFNs). Some basic operations on
these IFNs A and B applied in this paper are expressed as
follows:
A B ¼ xmA xð ÞþmB xð ÞmA xð ÞUmB xð Þ; vA xð ÞUvB xð Þ ; 9xAX
(3)
A B ¼ xmA xð ÞUmB xð Þ; vA xð ÞþvB xð ÞvA xð ÞUvB xð Þ ; 9xAX
(4)
Product of an intuitionistic fuzzy set and a real number is defined
as follows:
lA ¼ 1 1mA xð Þ l ; vA xð Þð Þl
D E 9xAX
n o (5)
Power of an intuitionistic fuzzy set:
Al ¼ mA xð Þ l ; 1 1vA xð Þð Þl
D E 9xAX
n o (6)
)
3.2 Intuitionistic fuzzy TOPSIS The TOPSIS method was proposed by
Hwang and Yoon (1981) and has since become one of the popular
techniques in MCDM. Like the original TOPSIS method, fuzzy TOPSIS
also relies on the so-called shortest distance from the fuzzy
positive ideal solution (FPIS) and the farthest distance from the
fuzzy negative ideal solution (FNIS) to determine the best
alternative. The FNIS maximizes the cost criteria and minimizes the
benefit criteria, whiles FPIS maximizes benefit criteria and
minimizes cost criteria. The alternatives are ranked and selected
according to their relative closeness determined using the two
distance measures. Similarly, the extension of TOPSIS into IFS also
maintains the key features such as the FPIS and the FNIS (Boran et
al., 2009). In the following, we outline the proposed method that
incorporates IFS into fuzzy TOPSIS.
3.3 Steps for Intuitionistic fuzzy TOPSIS Step 1. Determining sets
of alternatives, criteria, linguistic variables and
decision-makers. As it is usual with MCDM methods, the alternatives
to be ranked, the criteria to be used in the ratings and the group
of decision-makers are determined. In view of this, let A¼ {A1, A2,
...,Am} be the set of alternatives to be considered, C¼ {C1, C2,
..., Cn}, the set of criteria and, k¼ {D1, D2,…, Dd} the sets of
decision makers. Equation (7), shows a decision matrix for decision
maker, k¼ 1, 2,…, d:
C1 C2 Cn
2 6664
3 7775; i ¼ 1; 2; . . .; m; j ¼ 1; 2; . . .; n (7)
where ~xij is the rating of alternative Ai with respect to
criterion Cj both expressed in IFS. This implies that the rating of
a decision maker k is expressed as ~xkij ¼ / ~uk
ij; ~v k ij; ~p
k iji. Additionally, the linguistic variables (criteria) to be used
in the
assessment of start-up candidates are determined. The linguistic
variables are further expressed in linguistic terms and used to
rate the performance of each alternative with respect to a
linguistic variable (Kuo and Liang, 2012). In this paper, the
format of the linguistic terms are expressed in IFNs as seen in
Table II. Linguistic terms are qualitative words that describe the
subjective view of a decision maker about a criterion with respect
to each alternative (Klir and Yuan, 1995). In Table II the
linguistic terms and their IFNs are presented.
Linguistic terms IFS fuzzy number Ratings of alternatives
Very low (VL) ⟨0.05, 0.95⟩ Not acceptable (NA) Low (L) ⟨0.2, 0.75⟩
Slightly acceptable (SA) Medium (M) ⟨0.55, 0.4⟩ Acceptable (A) High
(H) ⟨0.75, 0.2⟩ Highly acceptable (HA) Very high (VH) ⟨0.95, 0.05⟩
Very highly acceptable (VHA)
Table II. Linguistic scale for the importance of
criterion and alternative ratings
)
Step 2. Determining importance weights of decision-makers. In this
step, the weights of the decision makers are determined by
weighting their relative importance towards the final decision to
be made. This is premised on the assumption that not all decision
makers are equal in importance and that there is a higher decision
authority that rates to assign weight to the decision makers. This
rating is linguistically expressed in IFN format. Let ~Dk ¼ ~uk;
~vk; ~pkf g be an IFN expressing the rating of a kth decision
maker. Then the importance weight of the kth decision maker may be
expressed below (Boran et al., 2009):
~rk ¼ ~ukþ ~pk
~uk ~uk þ ~vk
~uk þ ~vk
(8)
Step 3. Determining weights of each criterion. In this step,
decision makers rate to determine the importance or the weight of
each criterion with the help of the linguistic terms in Table I. In
the following, wj denotes the weight of the criterion Cj based on
the linguistic preference assigned by a decision maker. It is noted
that the weight ~W ¼ ~w1; ~w2; . . .; ~wn½ j¼ 1, 2,…, n is
expressed as an intuitionistic fuzzy set ~wj ¼ / ~mk
j ; ~v k j ;pji where as usual πj¼ 1−μj(x)−vj(x).
Step 4. Aggregation of decisions. In step 4, the ratings of the
decision makers concerning the alternatives and criteria importance
which are expressed in IFS are aggregated. Let ~S
k ¼ ð~xkijÞmn express the intuitionistic fuzzy matrix of each of
the decision makers and ~r ¼ ~r1; ~r2; :::; ~rd
, the importance weight of each decision
maker where Pd
k¼1 rk ¼ 1, ρk∈[0, 1]. The importance of aggregation in group
decision making processes cannot be
overemphasized. Aggregation operators are used to sum up all
individual ratings into a composite decision for the group of
decision makers. In fuzzy decision modelling, many aggregation
operators have been proposed with the majority belonging to the
families of averaging operators, ordered weight aggregation,
compensatory operators, geometric operators, Shapley averaging
operators, Sugeno integrals, Choquet operators and many other
hybrid forms. In this paper, the intuitionistic fuzzy weighted
averaging (IFWA) operator is used in aggregating decision makers’
preferences for both the criteria set and the alternative ratings.
The IFWA operator by Xu (2007) is preferred in this paper because
it is simple yet efficient (Li, 2014). In Equation (9) is the IFWA
operator where Sij is the aggregated decision matrix:
Sij ¼ IFWAr Sij ð1Þ; Sij
ð2Þ; :::; Sij ðdÞ
1mðkÞij
vrk
* + (9)
Step 5. Constructing weighted aggregation of IFS. The next step
computes the aggregated weighted intuitionistic fuzzy set by
multiplying the weight vector of the criteria set by the aggregated
decision matrix obtained in step 4. The weighted decision matrix is
expressed below:
W S ¼ ~W T mkij; v
k ij
k ij
)
Step 6. Determining intuitionistic fuzzy positive A+ and negative
A− ideal solutions. At this stage, the criteria are separated into
a so-called benefit and cost criteria. Let B and C, respectively
represent the benefit and cost criteria. Then A+ which maximizes
the cost criteria while minimizing benefit criteria, and A− that
maximizes the benefit criteria and minimizes cost criteria are
computed as follows:
Aþ ¼ mAþ W xj
; vAþ W xj
; vAW xj
i mAi :W xj
i vAi :W xj
i mAi :W xj
i vAi :W xj
9jAC
(15)
Step 7. Computing separating measures. The distances dþ IFS and
d
IFS , which express the
distances of each alternative from A+ and A− are calculated as
shown in Equations (16) and (17), respectively. These distances are
computed as intuitionistic sets:
dþ IFS Ai;A
2h ivuut (16)
j¼1
2þ vAiW xj vAW xj
2þ pAiW xj pAW xj
2h ivuut (17)
Step 8. Computing relative closeness coefficient and ranking of
alternatives. The relative closeness coefficient also known as
relative gaps degree CCi, is used to determine the ranking of the
ith alternative. This is computed as follows:
CCi ¼ dIFS Ai;A
ð Þ d9þIFS Ai;A
(18)
The highest value of CCi determines the best alternative implying
that the chosen alternative is concurrently closer to A+ and
farther away from A−.
723
)
4. Application The Government of South Africa has instituted a
number of pro entrepreneurial initiatives that is run by the
Department of Trade and Industry and the Economic Development
department. One of such initiatives is the Technology Venture
Capital Fund, a government publicly run VC scheme. The GVC among
other things offers seed capital to high potential but early stage
technology firms to trigger growth (Government of South Africa,
2015). The fund primarily supports commercialization of
technology-focused innovations to help create jobs and wealth for
the citizenry (Government of South Africa, 2015; Koekemoer and
Kachieng’a, 2002). Since its introduction, the fund has supported
many businesses with some relative successes but largely, most
businesses failed to achieve commercial success resulting in low
capital recovery rates. Rogerson (2004) notes that most government
venture scheme for small, medium and micro enterprises fail because
often time start-ups that exhibit potential for success are
discriminated in favour of start-ups with links to the government.
Knoesen (2009), Nattrass and Seekings (2001) and Iheduru (2004) all
note that the influence of political, social, racial and tribal
affiliations often lead to misappropriation of public funds and
therefore need to be curbed to ensure the success of such funds. In
what follows, a numerical example showing step by step, how the
proposed fuzzy intuitionistic TOPSIS method can be used to evaluate
and select start-up businesses under GVC’s such as that operated by
the Government of South Africa is presented.
4.1 Step 1. Determining sets of alternatives, criteria, linguistic
variables and decision- makers The first step involves the
identification of linguistic variables, linguistic terms, the
alternatives and decision makers. Table I lists the 27 sets of
criteria deemed relevant to the selection problem. Table II also
shows the linguistic terms used in rating both the importance
criteria and the alternatives expressed in their IFN format. The
numerical example has five start-up businesses and four decision
makers.
4.2 Step 2. Determining importance weights of decision-makers The
importance of each decision maker in terms of the weight of his/her
ratings are determined using Equation 8. In Table III, the
importance weights of each of the four decision makers are
presented. We assume the ratings of decision maker 3 carries more
weight than the others.
4.3 Step 3. Determining weights of each criterion The decision
makers rate to determine the importance weights of each criterion
as shown in Table IV using the linguistic terms in Table II. In
Table IV, it is shown that criterion 8, technical qualification is
deemed the most important by the decision makers.
It must be noted that for the purposes of simplicity and
conciseness, the IFNs are expressed only in their membership
(satisfaction) and non-membership (dissatisfaction)
D1 D2 D3 D4 D5
Weight 0.28 0.22 0.31 0.1 0.09
Table III. Importance weights of decision makers
724
)
forms. This means, to determine the hesitancy in each instance of
an intuitionistic rating, Equation (1) is applied. For example, the
hesitancy degree for the aggregated weight for criteria 1 in Table
IV could be computed as π¼ 1−0.72−0.23 which results in 0.05 as the
hesitancy degree.
4.4 Step 4. Aggregation of decisions In this step, the alternative
ratings giving in Table V are aggregated using the IFWA operator
which is expressed in Equation 9. It must be noted that the
aggregation procedure factors the importance of each decision maker
in the computation.
4.5 Step 5. Constructing weighted aggregation of IFS The aggregated
decisions are weighted at this stage using the weights assigned to
the criteria set. The weighted aggregated intuitionistic fuzzy
matrix is computed using Equation (10). The results are as shown in
Table VI.
4.6 Step 6. Determining intuitionistic fuzzy positive A+ and
negative A− ideal solutions The FPIS and the FNIS, defined
respectively as A+ and A−, are presented in Equations (19) and
(20), respectively. In determining A+ and A−, criteria (C15-C18)
which fall under
D1 D2 D3 D4 D5 Aggregated weight
C1 H H H M M ⟨0.72, 0.23⟩ C2 M M M M M ⟨0.55, 0.40⟩ C3 H H M M M
⟨0.66, 0.28⟩ C4 VL M L M L ⟨0.30, 0.66⟩ C5 H H M M M ⟨0.66, 0.28⟩
C6 L VL M L L ⟨0.30, 0.65⟩ C7 H M H M M ⟨0.68, 0.27⟩ C8 VH VH VH VH
VH ⟨0.95, 0.05⟩ C9 H H H VH VH ⟨0.82, 0.15⟩ C10 VL L M L L ⟨0.30,
0.66⟩ C11 H VH H M VH ⟨0.84, 0.14⟩ C12 M VH H H M ⟨0.78, 0.19⟩ C13
VL VL M VL L ⟨0.26, 0.71⟩ C14 H H H VH H ⟨0.79, 0.17⟩ C15 H M H M M
⟨0.68, 0.27⟩ C16 VH VH M H VH ⟨0.88, 0.11⟩ C17 VH M L VH H ⟨0.78,
0.21⟩ C18 L L L L M ⟨0.24, 0.71⟩ C19 H M H VH L ⟨0.73, 0.23⟩ C20 H
M H H L ⟨0.68, 0.26⟩ C21 VH M H M M ⟨0.8, 0.18⟩ C22 H H H H H
⟨0.75, 0.2⟩ C23 M M M M M ⟨0.55, 0.4⟩ C24 VH VH H H VH ⟨0.9, 0.09⟩
C25 VH M H H H ⟨0.82, 0.16⟩ C26 H H H H H ⟨0.75, 0.2⟩ C27 H M M M M
⟨0.62, 0.33⟩
Table IV. Criterion importance
)
the financial characteristics category are considered as costs
whiles the rest of the criteria are designated as benefits:
Aþ ¼ 0:67; 0:28h i; 0:49; 0:46h i; 0:58; 0:37h i; 0:29; 0:67h i;
0:52; 0:41h i; 0:27; 0:68h i 0:61; 0:34h i 0:78; 0:20h i; 0:69;
0:27h i; 0:26; 0:69h i; 0:80; 0:18h i; 0:52; 0:41h i; 0:22; 0:75h i
0:58; 0:37h i 0:19; 0:75h i; 0:11; 0:86h i; 0:10; 0:88h i; 0:02;
0:98h i; 0:68; 0:28h i; 0:48; 0:45h i 0:56; 0:38h i 0:56; 0:36h i;
0:34; 0:59h i; 0:76; 0:21h i; 0:49; 0:45h i; 0:70; 0:25h i; 0:52;
0:42h i
2 6664
3 7775
(19)
A ¼ 0:21; 0:74h i; 0:24; 0:71h i; 0:14; 0:82h i; 0:12; 0:85h i;
0:24; 0:71h i; 0:05; 0:93h i 0:32; 0:62h i 0:35; 0:60h i; 0:26;
0:69h i; 0:14; 0:82h i; 0:57; 0:37h i; 0:22; 0:73h i; 0:10; 0:87h i
0:27; 0:69h i 0:56; 0:38h i; 0:60; 0:35h i; 0:53; 0:42h i; 0:20;
0:75h i; 0:20; 0:74h i; 0:37; 0:56h i 0:32; 0:63h i 0:28; 0:66h i;
0:20; 0:75h i; 0:33; 0:63h i; 0:16; 0:79h i; 0:28; 0:66h i; 0:25;
0:70h i
2 6664
3 7775
A1 A2 A3 A4 A5
C1 o0.24, 0.7W o0.40, 0.54W o0.67, 0.28W o0.53, 0.39W o0.21, 0.74W
C2 o0.24, 0.71W o0.38, 0.55W o0.49, 0.46W o0.46, 0.48W o0.27, 0.67W
C3 o0.14, 0.82W o0.36, 0.58W o0.51, 0.42W o0.58, 0.37W o0.44, 0.49W
C4 o0.12, 0.85W o0.15, 0.81W o0.29, 0.67W o0.27, 0.69W o0.17, 0.78W
C5 o0.37, 0.57W o0.40, 0.53W o0.5, 0.43W o0.52, 0.41W o0.24, 0.71W
C6 o0.05, 0.93W o0.06, 0.91W o0.21, 0.74W o0.27, 0.68W o0.23, 0.72W
C7 o0.49, 0.43W o0.38, 0.56W o0.61, 0.34W o0.39, 0.54W o0.32, 0.62W
C8 o0.35, 0.6W o0.38, 0.57W o0.78, 0.20W o0.65, 0.30W o0.52, 0.43W
C9 o0.35, 0.6W o0.49, 0.45W o0.60, 0.33W o0.69, 0.27W o0.26, 0.69W
C10 o0.14, 0.82W o0.18, 0.78W o0.26, 0.69W o0.23, 0.73W o0.20,
0.76W C11 o0.62, 0.32W o0.57, 0.37W o0.80, 0.18W o0.77, 0.21W
o0.73, 0.24W C12 o0.22, 0.73W o0.31, 0.63W o0.51, 0.43W o0.52,
0.41W o0.45, 0.49W C13 o0.10, 0.87W o0.13, 0.83W o0.19, 0.77W
o0.22, 0.75W o0.11, 0.86W C14 o0.43, 0.50W o0.43, 0.50W o0.58,
0.37W o0.53, 0.40W o0.27, 0.69W C15 o0.36, 0.58W o0.42, 0.50W
o0.56, 0.38W o0.33, 0.60W o0.19, 0.75W C16 o0.11, 0.86W o0.22,
0.75W o0.60, 0.35W o0.44, 0.50W o0.41, 0.54W C17 o0.43, 0.51W
o0.29, 0.67W o0.53, 0.42W o0.53, 0.42W o0.10, 0.88W C18 o0.02,
0.98W o0.14, 0.82W o0.18, 0.77W o0.18, 0.77W o0.20, 0.75W C19
o0.20, 0.74W o0.44, 0.49W o0.68, 0.28W o0.60, 0.36W o0.50, 0.43W
C20 o0.47, 0.46W o0.48, 0.45W o0.37, 0.56W o0.43, 0.50W o0.38,
0.56W C21 o0.32, 0.63W o0.32, 0.63W o0.56, 0.38W o0.55, 0.39W
o0.42, 0.53W C22 o0.37, 0.56W o0.29, 0.65W o0.56, 0.36W o0.56,
0.36W o0.28, 0.66W C23 o0.20, 0.75W o0.3, 0.64W o0.30, 0.64W o0.34,
0.59W o0.29, 0.65W C24 o0.33, 0.63W o0.58, 0.36W o0.77, 0.21W
o0.76, 0.21W o0.40, 0.55W C25 o0.49, 0.45W o0.42, 0.52W o0.45,
0.49W o0.47, 0.47W o0.16, 0.79W C26 o0.39, 0.54W o0.39, 0.54W
o0.70, 0.25W o0.59, 0.34W o0.28, 0.66W C27 o0.25, 0.70W o0.27,
0.66W o0.45, 0.48W o0.52, 0.42W o0.35, 0.58W
Table VI. Weighted aggregated intuitionistic fuzzy decision
matrix
728
)
4.7 Step 7. Computing separating measures The distance measures of
dþ
IFS and dIFS are computed from each alternative to the fuzzy
positive and negative ideal solutions using Equations (16) and
(17), respectively. This results in Table VII. Additionally, the
closeness coefficient that ultimately determines the ranking order
of the alternatives are calculated using Equation (18). It can be
seen that per the numerical example, alternative 4 (A4) happens to
be the best start-up business followed by A3, A2, A5 and A1 in that
order (Figure 1).
5. Conclusion VC schemes can be considered a game of chance where
losses as well as profits are equally possible depending on the
performance of the start-up business. The likelihood of success is
even smaller in the case of GVC scheme. This is in part due to the
selection of unmerited start-up businesses as a result of political
interferences, and lack of models that explicitly consider
qualitative factors such as leadership experiences and product
qualities in the selection process. More importantly, to be
efficient, any decision making model for aiding the selection
problem in a GVC scheme must be able to explicitly model
uncertainty. This is because the values of the factors upon which a
selection is made are not known at the time of selection. The model
must also be able to if not eliminate, help mitigate the perceived
lack of transparency in a GVC scheme selection process.
To this end, this paper theoretically generates interests in
decision models used in VC by building on previous works. More
importantly, the paper helps to simplify and bring formalism into
selection decision making processes involving start-up businesses
in VC financing schemes. The strength of the paper is the
confidence it evokes in the
D+ D− CCi Ranking of alternatives
A1 1.926 1.171 0.360 5 A2 1.469 1.439 0.450 3 A3 1.153 4.107 0.637
2 A4 0.976 3.752 0.665 1 A5 1.756 1.409 0.403 4
Table VII. Relative closeness
A 1 A 2 A 3 A 4 A 5
0.36 0.45
0.64 0.67
businesses (alternatives)
)
final selection decision by combining all criteria, be it a “more
is better” or a “less is better” criterion into a composite score
for the start-up candidates. Currently, almost all the decision
making models proposed in literature either resort to only
quantitative factors, ignore uncertainty by relying on past data or
consider uncertainty only in the weights assigned to decision
makers. Uncertainties in future values are largely ignored. The
proposed method addresses the uncertainty issues through the use of
intuitionistic fuzzy TOPSIS method. The issues of fairness and
transparency are also known to be a major reason for the
underperformance of government-run VC schemes. By its design, the
proposed model is able to enhance fairness and transparency in the
selection process by demanding decision makers to rate their
decisions using linguistic variables that are easy to track for its
veracity. This is done by determining the level of satisfaction,
dissatisfaction and hesitancy in each decision maker’s assessment
or rating of a candidate.
The practicality of the proposed method is demonstrated using an
example centred on a government-run VC scheme. The proposed model
makes it feasible to include important criteria such as “societal
impact/contribution” that are difficult to model analytically in
the selection process. As a practical implication, when all
necessary parameters are supplied, the proposed model by its design
makes the selection process transparent and fair, thereby limiting
political influences that are difficult to prevent in PVC’s.
The limitation of the paper is that the set of criteria proposed in
this paper may not be exhaustive for adequate selection of
technology start-ups in a GVC programme in some jurisdictions
around the world. In view of this, the proposed set of criteria may
be tinkered with or tailored to suit the decision problem at hand
when such need arises. Additionally as is the case in all models
for uncertain situations, many of the parameters for analyzing
start-ups are future values that are uncertain today. As such
management are encouraged to validate the result given by the
proposed model.
Future work would compare the performance of the proposed decision
aiding framework with other MCDM models. In particular, this model
is largely a compensatory model where an inferiority or superiority
in a criterion is compensated for or balanced with an inferiority
or superiority from another criterion. In future studies, other
non-compensatory methods could be compared with our proposed model
to ascertain their effectiveness to such decision problem.
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Corresponding author Eric Afful-Dadzie can be contacted at:
[email protected]
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