Sustweetability: Infrastructure Sustainability-Related Topic Classification in Social Media

Abstract

Keywords:

1 Introduction

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

2 Background literature and related works

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

𝑃(𝑐|𝑑) ∝ 𝑃(𝑐) × ∏ 𝑃(𝑓 |𝑐)

3 Methods

3.1 Case study projects & data collection

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

Table 1 Case study projects and the number of tweets from each project used in the analysis

3.2 Annotating training set through crowdsourcing

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

Figure 1 Homepage of the GWAP run for annotating the training set through crowdsourcing

3.3 Training classifiers

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

Figure 2 Classification combinations tested in this study

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

4 Results

Table 2 Performance of different classifiers (in terms of accuracy)

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

Figure 1 Accuracy of the optimal classifier (optimal DT, with SVM) in different data-sets

5 Conclusion and future work

30

40

50

60

70

80

90

100

1 2 3 4

Acc

urac

y (%

)

DT Layer

all

ATLStreetcar

CCLRT

CrossTown

M1Rail

None Env. Eco. Soc/Eng.

Nik-Bakht et al. 2015 Sustweetability: Infrastructure Sustainability-related topic classification in social media

Proc. of the 32nd CIB W78 Conference 2015, 27th-29th 2015, Eindhoven, The Netherlands

References