CORIA 2009

Keynotes

Fil des billets

Keynote Mining Opinions in Blogs, The Good, the Bad and the Ugly

Par Webmaster le jeudi, 26 février 2009 (13:13) - Keynotes

Marie-Francine Moens

http://www.cs.kuleuven.be/~sien/
Associate Professor

Department of Computer Science

Universiteit Leuven

Belgium

pour son tutorial : "Mining Opinions in Blogs, The Good, the Bad and the Ugly"

Blogs offer a variety of opinions on politics, consumer products, persons and other subjects. We cannot neglect this wealth of information. No wonder that there are multiple research and commercial efforts to make this information accessible. In a first part the lecture gives an overview of state of art technologies, their results and their applications. In a second part we describe and discuss our own research in opinion mining and focus on the following problems. As blogs interweave many different opinions expressed towards a variety of targets, it is important to correctly attribute a certain opinion to the right subject of discussion. Moreover, the language used in blogs is very diverse demanding automated methods for efficiently selecting examples when acquiring or annotating the necessary opinion patterns (e.g., use of active learning techniques). Related to the foregoing is that blog languages diverge largely from standard language and evolve continuously. We need here very adaptive mining systems. In a third part of the lecture, we go deeper into the current phenomenon of spamming and manipulation of opinions and how text mining could be of help in order to protect sensitive users such as children. Throughout the lecture, we point to many promising research avenues.

Keynote "Collaborative Searching: Social Searching, Together"

Par Webmaster le jeudi, 26 février 2009 (13:12) - Keynotes

Alan F. Smeaton
CLARITY: Centre for Sensor Web Technologies Dublin City University Glasnevin, Dublin 9, Ireland

Résumé:

Information Retrieval (IR) is typically an individual pursuit where an individual searcher will engage with a search system, working alone, until their information need is satisfied. Yet in the real world there are many scenarios, both work-related and related to leisure, entertainment or hobbies, where we want to search as part of a team, maybe even a group of only two people. Collaborative Information Retrieval (CIR) refers to technologies which support collaboration in the retrieval process. In this presentation we will present both synchronous and asynchronous CIR as well as covering remote and co- located search, and the various combinations of these. In our work we are particularly interested in synchronous collaborative IR (SCIR) where a group of users work collectively to address some shared information need. We describe two systems we have developed to demonstrate SCIR, one on a gesture-based tabletop computer and the other on touch-based mobile devices (iPODs). We believe SCIR to be an important kind of social search even though the tools to support this are neither widespread nor reliable and are limited by the technology we currently use. Despite this we expect the importance of SCIR to grow as a consequential fallout of growth in social networks and the trend towards social networks now acting as platforms for applications, like search.