Towards Using Word Embedding Vector Space for Better Cohort Analysis

Mohamed Bahgat, Steve Wilson, Walid Magdy

Paper type: Poster

Keywords: clusters, communities, discussions, embeddings, groups, health, mental health, reddit, spaces, tools, word embeddings, words

2020-06-11 P10 (15:00-16:00 GMT) [Zoom] [Cal]

Abstract: Social media platforms can provide a place for users to express their opinions, interact with others and reflect on their personal experiences. On websites like Reddit, users join communities where they discuss specific topics which cluster them into possible groups of cohorts. These cohorts provide opportunity to analyse individuals with specific tendencies. The authors within these cohorts have the opportunity to post more openly under the blanket of anonymity, and such openness provides a more accurate signal on the real issues individuals are facing. Some communities within Reddit contain discussions about mental health struggles such as depression and suicidal ideation. To better understand and analyse these individuals, we propose to exploit properties of word embeddings that group related concepts close to each other in the embeddings space. For the posts from each topically situated sub-community, we build a word embedding model and use handcrafted lexicons to identify emotions, values and psycholinguistically relevant concepts. We then extract insights into the way that users perceive these concepts by measuring the distance between them and references made by users either to themselves, others or other things around them. We put our tool to the test and see if we can extract meaningful signals.

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