Topics in Opinion Mining. Dr. Paul Buitelaar Data Science Institute, NUI Galway
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1 Topics in Opinion Mining Dr. Paul Buitelaar Data Science Institute, NUI Galway
2 Opinion: Sentiment, Emotion, Subjectivity OBJECTIVITY SUBJECTIVITY SPECULATION FACTS BELIEFS EMOTION SENTIMENT UNCERTAINTY After a slide by Carlos Iglesias, UPM
3 Language Resource Pool for Sentiment Analysis in European Languages
4
5 Generate Sentiment Lexicons Domain-specific, multilingual, Linked Data based Lexicon Generator Entity class extraction Legacy resources Entity linking Synset identification EuroSentiment resources Sentiment analysis Translation Gabriela Vulcu, Paul Buitelaar, et al. (2014) Generating Linked-Data based Domain-Specific Sentiment Lexicons from Legacy Language and Semantic Resources 5 th International Workshop on EMOTION, SOCIAL SIGNALS, SENTIMENT & LINKED OPEN DATA, co-located with LREC 2014.
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8 Social Semantic Emotion Analysis for Innovative Multilingual Big Data Analytics Markets
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10 Use Case: Brand Reputation Management
11 Paul Buitelaar, Ian D. Wood, et al. (2018). MixedEmotions: An Open-Source Toolbox for Multi-Modal Emotion Analysis. IEEE Transactions on Multimedia, pages 1 12.
12 Suggestion Mining Sapna Negi (now at Genesys)
13 Dear Microsoft, release a new zune with your wp7 launch on the 11th. It would be smart. Suggestions for improvement Suggestions to future customers Be sure to specify a room at the back of the hotel. I suggest to keep a set of normal, macro and telephoto lens
14 Data set development Source Class ratio Phase 2 agreement (kappa) Re-tagged Datasets Microsoft tweets (original) Twitter 238 / Travel forum (original) Fodors, Insight Vacations 2192 / Travel forum (re-tagged) Fodors, Insight Vacations 1314 / New Datasets Hotel train Tripadvisor 448 / Hotel test Tripadvisor 404 / Electronics train Amazon 324 / Electronics test Amazon 101 / Travel test Fodors 229 / Software Train Uservoice 1428 / Software Test Uservoice 296 /
15 Features P1: Lexical Keywords (expanded seed words using WordNet) P2 P5: Syntactic PoS n-grams PoS patterns in imperative and subjunctive sentences Subject P6 P7: Sentiment Sentiment score ( SentiWordnet) Normalised score P8: Semantic Presence and type of named entity Negi, S. and Buitelaar, P., Towards the extraction of customer-to-customer suggestions from reviews. In Proceedings of the Conference onempirical Methods in Natural Language Processing (EMNLP), pp
16 Experiment setup Domain-specific Open domain Cross-domain
17 Results Domain Specific Baseline Rules Related Proposed Related + Proposed Hotel Electronics Travel Software Open Domain Baseline Rules Related Proposed Related + Proposed Cross Domain Sapna Negi, Kartik Asooja, Shubham Mehrotra, Paul Buitelaar. A Study of Suggestions in Opinionated Texts and their Automatic Detection. *SEM 2016, Co-located with ACL 2016, Berlin, Germany.
18 Metaphor Identification in Twitter Omnia Zayed
19 Metaphors in Tweets
20 Metaphor Annotation approach tweet dataset Metaphor Identification Baseline weakly annotated dataset Crowdsourcing human annotated dataset Omnia Zayed, John P. McCrae, Paul Buitelaar. Phrase-Level Metaphor Identification using Distributed Representations of Word Meaning. Workshop on Figurative Language Processing at NAACL 2018.
21 Distributional Metaphor Identification Omnia Zayed, John P. McCrae, Paul Buitelaar. Phrase-Level Metaphor Identification using Distributed Representations of Word Meaning. Workshop on Figurative Language Processing at NAACL 2018.
22 Data sources for tweet data set Semeval-2018 Task 1: Affect in Tweets. tweets collected using emotion-related words: angry, happy, surprised, 100M tweets, retrieved 10K Irish Elections Twitter Dataset (collected by UCD) tweets collected around the recent Irish elections. 40K tweets (17K unique) 22
23 Metaphor Annotation Some Results Top-10 Highest Agreement control terrorism take away sadness clean up nation drown faith put smile educate people wear smile twist facts bred dragon push poland Top-10 Lowest Agreement have democracy leave call match outfit invade space hold prisoner take revenge talk sense get chance change fact give anxiety
24 Market Sentiment Analysis Tobias Daudert
25 More holistic view on Market Sentiment Tobias Daudert, Paul Buitelaar (2018) Linking News Sentiment to Microblogs: A Distributional Semantics Approach to Enhance Microblog Sentiment Classification. 9 th Workshop on Computational Approaches to Subjectivity, Sentiment & Social Media Analysis (WASSA) at EMNLP.
26 Sentiment sources and influences
27 Sentiment conveyance
28 Linking
29 Assigning
30 QA
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