Séminaires RALI-OLST

Approaches to Collection Selection and Results Merging for Distributed Information Retrieval

Yves Rasolofo

Institut Interfacultaire d'Informatique, Université de Neuchâtel

Le lundi 19 novembre 2001 à 11 h 30

Salle 3195, Pavillon André-Aisenstadt

We have investigated two major issues in Distributed Information Retrieval published works on these two issues are based on pre-stored metadata, the approaches described in this talk involve extracting the required information at the time the query is processed. In order to predict the relevance of collections to a given query, we analyse a limited number of full documents (e.g., the top five documents) retrieved from each collection and then consider term proximity within them. On the other hand, our merging technique is rather simple since input only requires document scores and lengths of results lists. Our experiments evaluate the retrieval effectiveness of these approaches and compare them with centralised indexing and various other DIR techniques (e.g., CORI). Our evaluations demonstrate that the retrieval effectiveness of our simple approaches is worth considering.

Joignez-vous à nous avec Zoom à l'aide de cette URL.
ID de réunion : 916 9097 5818, Code : 343273.
Numéros de téléphone : https://umontreal.zoom.us/u/abitNZzLg.
One tap mobile : +14388097799,,91690975818#,,,,,,0#,,343273#

Pour recevoir les annonces hebdomadaires par courriel, envoyez un message à l'adresse majordomo@iro.umontreal.ca. Il suffit d'envoyer un message ne contenant que la ligne 'subscribe ralli' (sans les apostrophes).

Liste de tous les séminaires pour l'année :

1991 1992 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021