Unlocking the Power of Word2Vec for Identifying Implicit Links

Gabriel Gutu, Mihai Dascalu, Stefan Ruseti, Traian Rebedea, Stefan Trausan-Matu

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This paper presents a research on using Word2Vec for determining implicit links in multi-participant Computer-Supported Collaborative Learning chat conversations. Word2Vec is a powerful and one of the newest Natural Language Processing semantic models used for computing text cohesion and similarity between documents. This research considers cohesion scores in terms of the strength of the semantic relations established between two utterances; the higher the score, the stronger the similarity between two utterances. An implicit link is established based on cohesion to the most similar previous utterance, within an imposed window. Three similarity formulas were used to compute the cohesion score: an unnormalized score, a normalized score with distance and Mihalcea’s formula. Our corpus of conversations incorporated explicit references provided by authors, which were used for validation. A window of 5 utterances and a 1- minute time frame provided the highest detection rate both for exact matching and matching of a block of continuous utterances belonging to the same speaker. Moreover, the unnormalized score correctly identified the largest number of implicit links.
Original languageEnglish
Title of host publication2017 IEEE 17th International Conference on Advanced Learning Technologies (ICALT)
Subtitle of host publicationAdvanced Technologies for Supporting Open Access to Formal and Informal Learning
Publication statusPublished - Jul 2017
Externally publishedYes
Event2017 IEEE 17th International Conference on Advanced Learning Technologies (ICALT) - Timisoara, Romania
Duration: 3 Jul 20177 Jul 2017


Conference2017 IEEE 17th International Conference on Advanced Learning Technologies (ICALT)
Abbreviated titleICALT 2017
Internet address


  • implicit links
  • CSCL
  • Word2Vec
  • text cohesion
  • semantic models


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