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Aspect based sentiment analysis

Thesis Info

Author

Nasim, Zarmeen; Supervised by Dr. Sajjad Haider

Program

MS

Institute

Institute of Business Administration

Institute Type

Private

City

Karachi

Province

Sindh

Country

Pakistan

Thesis Completing Year

2016

Subject

Management

Language

English

Other

CallNo: 658.8343

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676720941457

Similar


Sentiment Analysis has become a popular area of research due to exponential increase in the volume of user generated content with the rise of Internet and Social Networking Websites. Sentiment Analysis can be performed at different level of granularities such as document level, sentence level and aspect level. Aspect level sentiment analysis provides more deeper insights on how customer feels about product/service. Aspect term extraction, aspect category detection and sentiment polarity detection are the core tasks in aspect based opinion mining. This report presents existing state-of-the-art approaches for performing aspect level opinion mining. We have also provided a comprehensive list of publicly available lexicons and annotated datasets that can be used to build aspect level sentiment analysis systems. The first chapter introduces the research area of Opinion Mining. The second chapter focuses on aspect level opinion mining. In the next three chapters, we have discussed approaches of aspect term extraction, aspect category detection and aspect polarity identification. Taxonomy of various approaches discussed in literature related to opinion mining is presented in Chapter 6. Chapter 7 presents evaluation metrics and various publicly available lexicons and datasets. Chapter 8 provides details of our tool named ABSA Toolkit developed using state-of-art techniques of aspect level opinion mining. The report concludes with some emerging techniques and research issues in opinion mining
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۔نظم (مشینیں )

نظمیں

مشینیں ---نوید ملک

 

"سلیبس مکمل جو کروا سکیں ایسی نایاب رنگیں مشینیں

 کہاں  بِک رہی ہیں؟

وہ  رنگیں مشینیں

جو ذہنوں میں کھِلتے گلستاں کو بے رنگ کر دیں

جو "بستوں" میں ویرانی بھر دیں

جو خوابوں پہ ہر امتحاں کا نتیجہ بکھریں

تھکاوٹ انڈیلیں

مشینیں کہ جن سے

لبوں پر سرکتے سوالوں کو باندھیں

قلم سے ہمکتے خیالوں کو باندھیں

 سحر کی جبیں سے چھلکتے اجالوں کو باندھیں

مشینیں کہ جن سے

اڑانیں کُترنے میں آسانیاں ہوں

نگاہیں کچلنے میں آسانیاں ہوں

تجسس نگلنے میں آسانیاں ہوں

کہاں ہیں؟

 مشینیں !

جو آنکھوں کےپیڑوں یہ دولت کے آرے چلائیں

سرابوں، عذابوں کی "بٹ بٹ" سے کانوں کے جنگل جلائیں

جو گوندھیں کئی جگنوؤں کو ، کئی سورجوں کو

تمدن کے ملبے سے ڈھونڈیں خزائیں

دھڑکتے ہوئے عکس سارے بجھائیں

بصارت پہ دستک نہ کوئی اگائیں

"کلاسوں" میں قبریں سجائیں

جو یونانی مٹی سے تیار ہر  ایک پیکر کو روندیں

کھلونے بنائیں

جو سُقراطی پنچھی بہت چہچہاتے  ہیں ان کی

ہواؤں سے چہکار ساری مٹائیں

ابھرتی ہوئی جنبشوں  پر غضب آندھیوں کا گرائیں

مشینیں !

جو بس نوکری کی مشینیں بنائیں

کہاں ہیں؟

A Qualitative Study of Women Domestic Workers using Public Transport and the Adoption of Purdah

The aim of this research is to analyze the key issues concerning the mobility of women domestic workers working in Lahore, Pakistan, through a qualitative feminist approach. For data collection, the walking interview method, which entailed walking alongside the participants and asking them questions regarding the study questions. Qualitative thematic analysis was used to analyze the interviews with ten participants. The findings reveal that the key deterrent limiting women’s mobility includes the extremely patriarchal socio-cultural norms that surround women’s lives. Two broad themes were found including: (i) Purdah as an Extension of One’s Agency; and (ii) Personal Safety, Cost, and Overcrowded Public Transport. This paper changes the societal implications of purdah while also shifting the narrative that surrounds it through the way women participants use purdah to extend their very limited agency. The study also helps to shed light on Pakistan’s public transit system through the eyes of women domestic workers who view it as a deeply unsafe and uncomfortable mode of traveling within the city.

Exploring Changes in Teachers Thinking During a Mathematics Vt Program

A multiple case study design was used to investigate the nature of changes in teachers' thinking about teaching and learning of mathematics during a mathematics VT (Visiting Teacher) program. The VT program is a two-month professional development program for teachers offered by the Institute for Educational Development. The fieldwork of the study was carried out during the entire period that the VT program was going on. The researcher was a participant observer in the program and used the observations, interviews, informal conversations and documents to gather data from four participants who served as the study sample. The study found that the VTs began with limited notions of the nature of mathematics, how mathematics should be taught and how children learn. During the program, there was evidence of significant changes in their thinking. For example, two of the VTs began to make links between areas of mathematics and began to develop a deeper understanding of the concepts. One VT's thinking changed markedly in relation to students' cognition and began to question how students learn. One of the VTs moved from a formalized perception of mathematics to an awareness of how mathematics is generated. Several themes emerged from a cross-case analysis. First, there was evidence of tacit learning, that is, changes in the teachers' thinking that the teachers did not recognize or acknowledge. Next, although teachers' thinking had changed, their epistemological constructs remained intractable, which may have led to a lack of awareness of changes in their thinking. Then, a factor that colored the perceptions of the VTs thinking was the challenges in their context. Lastly, all the four participants developed confidence, which may have an emancipatory nature. While the confidence developed in various forms, all acknowledged it to be a result of the environment in the program. The implications of the study are discussed in the end, together with recommendations and suggestions for further research.