• A
  • A
  • A
  • ABC
  • ABC
  • ABC
  • А
  • А
  • А
  • А
  • А
Regular version of the site

Student
Title
Supervisor
Faculty
Educational Programme
Final Grade
Year of Graduation
Andrey Zakharov
Creation of Tonality Dictionaries using the Word Proximity Graph
Data Science
(Master’s programme)
2018
The task of automatically analyzing the opinions of users about goods or services is extremely demanded. While choosing a product and planning a purchase most customers try to analyze the feedback of experiences users who already have tried it. Therefore, there is a need to create methods that determine the tonality of the text and the attributes of an item as precisely as possible. One of the methods for determining the tonality described in this paper is a semi-supervised algorithm using the word proximity graph. Different models of word embedding are compared: Word2Vec, FastTtext, model based on Singular Value Decomposition of the matrix of point-to-point mutual information between words (PPMI). The quality of the algorithm is evaluated on the corpora of reviews about the goods of the largest Russian consumer electronic retail chain M.Video. The work presents experiments that demonstrate how features based on word tonality can boost the quality of the prediction when classifying texts by tonality.

Student Theses at HSE must be completed in accordance with the University Rules and regulations specified by each educational programme.

Summaries of all theses must be published and made freely available on the HSE website.

The full text of a thesis can be published in open access on the HSE website only if the authoring student (copyright holder) agrees, or, if the thesis was written by a team of students, if all the co-authors (copyright holders) agree. After a thesis is published on the HSE website, it obtains the status of an online publication.

Student theses are objects of copyright and their use is subject to limitations in accordance with the Russian Federation’s law on intellectual property.

In the event that a thesis is quoted or otherwise used, reference to the author’s name and the source of quotation is required.

Search all student theses