Università della Svizzera italiana

Text mining for online mental health state and personality assessment

Ríssola, Esteban A. ; Crestani, Fabio (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO009.

Advances on psycho-linguistics have evidenced that the ways in which people use words could act as a reliable source to assess a wide array of behaviours. Language use acts as an indicator of the individuals’ current mental state, personality and even personal values. In this thesis, we focus on language analysis to study two closely related processes which encompass integral components of...

Università della Svizzera italiana

Statistical models for the analysis of short user-generated documents : author identification for conversational documents

Inches, Giacomo ; Crestani, Fabio (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2014 ; 2014INFO019.

In recent years short user-generated documents have been gaining popularity on the Internet and attention in the research communities. This kind of documents are generated by users of the various online services: platforms for instant messaging communication, for real-time status posting, for discussing and for writing reviews. Each of these services allows users to generate written texts...

Università della Svizzera italiana

Query refinement for patent prior art search

Mahdabi, Parvaz ; Crestani, Fabio (Dir.) ; Landoni, Monica (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2014 ; 2014INFO004.

A patent is a contract between the inventor and the state, granting a limited time period to the inventor to exploit his invention. In exchange, the inventor must put a detailed description of his invention in the public domain. Patents can encourage innovation and economic growth but at the time of economic crisis patents can hamper such growth. The long duration of the application process...

Università della Svizzera italiana

Methods for ranking user-generated text streams : a case study in blog feed retrieval

Keikha, Mostafa ; Crestani, Fabio (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2012 ; 2012INFO003.

User generated content are one of the main sources of information on the Web nowadays. With the huge amount of this type of data being generated everyday, having an efficient and effective retrieval system is essential. The goal of such a retrieval system is to enable users to search through this data and retrieve documents relevant to their information needs. Among the different retrieval...