Post on 05-Jan-2016
transcript
Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
A CASE FOR PRIORITY
Larry Fellows - Honeywell, Inc.
and
Ivy Hooks - Compliance Automation Inc
2 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Prioritizing Requirements
Everybody does it - usually too late Need to do it early - when there are options
Resources
Requirements
3 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Typical Project Progress
0 20 40 60 80 100
Req A
Req B
Req C
Req D
Req E
Percent Complete
4 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Forced Priorities
0 20 40 60 80 100
Req A
Req B
Req C
Req D
Req E
Percent Complete
Real Priority
Req A - 1
Req B - 3
Req C - 1
Req D - 2
Req E - 3
Forced Priority
Req A - 3
Req B - 1
Req C - 1
Req D - 3
Req E - 1
Typical Project Progress
5 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Requirement Reality
New absolutely necessary Requirement
6 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Out of Sync Development
0% 50% 100%
Req A
Req B
Req C
Req D
Req F
Req G
Req
uir
emen
ts
% Complete
MOD 1
MOD 2
7 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Options versus Time
0
20
40
60
80
100
% Options Available
Req Design Dev Start DevComp
Phase
8 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Benefits of Prioritizing Early
Have real options Ensures that effort and resources are focused
on the essential requirements Useful when resolving requirement conflicts Useful when planning phased deliveries Required to determine which requirements
can be delayed or deleted
Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
What is Prioritization?
10 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Prioritization means Classifying
essential
useful
desirable
non-negotiable
negotiable
flexible
right now
a little later
someday
1
2
3
11 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Prioritization Example 1
essential
useful
desirable
1
2
3
Operate in Windows 95 environment
Mouse and hot key for all functions
User can define hot keys
12 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Prioritization Example 2
non-negotiable
negotiable
flexible
1
2
3
read data every 4 msec
provide data on screen within 1 second of command
allow sort data on any parameter
13 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Prioritization Example 3
right now
a little later
someday
1
2
3
single platform
networked
multiple platforms
Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
How to determine priorities
15 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Prioritization Steps
Gather Prioritization Data
Assess Prioritization Data
Resolve Differences
16 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Gather Prioritization Data
Sell prioritization benefits
Define the 1, 2, 3’s
Let stakeholders classify requirements
Do internal classification
17 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Define 1, 2, 3’s
1
2
3
essential
useful
desirable
18 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Problem
Need a new thermostat Honeywell has family of thermostats with
different features Thermostats labeled good, better, best Chose thermostat that meets our needs at a
price we are willing to pay
19 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Thermostat Features Control heating to temperature degrees Control cooling to temperature degrees Programmable for weekday, Saturday, and Sunday Four temperature settings daily Hold at temperature (override program) Fan control run continuously or auto Automatic switch between heat and air conditioning Clock display Display settings Battery backup Low battery indicator
20 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Assess Priority Data
1
2
3
A
B
C
D
A
B
C
D
A
B
C
D
21 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Resolve Differences
D
D
D
B
B
B
D
D
D
B
B
B
Negotiate
Agree
22 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Prioritization Considerations
Must involve all stakeholders All requirements cannot be essential Try to get agreement on prioritization
informally As analysis and design evolve, review
and adjust priorities
23 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
QFD
large and complex
many customers/users
very big differences in priorities from different viewpoints
24 Copyright 1998 Honeywell Inc. And Ivy HooksAll rights reserved
Summary
Resources
Requirements
Limited
Time
Money
Skills
Too many Reqt
Changing Reqt
Unsynced Reqt
1 2 3
Time