Isaac Caicedo-Castro - S3niffer: A text description-based service search system

10:00
Mardi
12
Mai
2015
Lieu : 
Organisé par : 
Isaac Caicedo-Castro
Intervenant : 
Isaac Caicedo-Castro
Information détaillée : 

 

Thesis committee:

Prof. Marlon Dumas, University of Tartu, Estonie, Reviewer
Prof. Boughanem Mohand, Paul Sabatier University, Reviewer
Prof. Sylvie Calabretto, INSA de Lyon, Examiner
Prof. Helga Duarte, National University of Colombia, Co-supervisor
Prof. Marie-Christine Fauvet, Joseph Fourier University of Grenoble, Supervisor
 
Résumé : 

In this research, we address the problem of retrieving services which fulfil users' need expressed in query in free text. Our goal is to cope the term mismatch problems which affect the effectiveness of service retrieval models applied in prior research on text descriptions-based service retrieval models. These problems are caused due to service descriptions are brief. Service providers use few terms to describe desired services, thereby, when these descriptions are different to the sentences in queries, term mismatch problems decrease the effectiveness in classical models which depend on the observable text features instead of the latent semantic features of the text.

 
We have applied a family of Information Retrieval (IR) models for the purpose of contributing to increase the effectiveness acquired with the models applied in prior research on service retrieval. Besides, we have conducted systematic experiments to compare our family of IR models with those used in the state-of-the-art in service discovery. From the outcomes of the experiments, we conclude that our model based on query expansion via a co-occurrence thesaurus outperforms the effectiveness of all the models studied in this research. Therefore, we have implemented this model in S3niffer, which is a text description-based service search engine.