Language modeling Archives

Dynamic query modeling for related content finding

While watching television, people increasingly consume additional content related to what they are watching. We consider the task of finding video content related to a live television broadcast for which we leverage the textual stream of subtitles associated with the broadcast. We model this task as a Markov decision process…

Using Temporal Bursts for Query Modeling

01/02/2014 Blog Journal Papers Publications No Comments

In this paper, we present an approach to query modeling that leverages the temporal distribution of documents in an initially retrieved set of documents.

The University of Amsterdam at TREC 2012

09/11/2012 Blog Publications Unrefereed No Comments

This year the Information and Language Processing Systems (ILPS) group of the University of Amsterdam participated in the Microblog and the Knowledge Base Acceleration (KBA) tracks.

Adaptive Temporal Query Modeling

23/11/2011 Conference Papers Publications No Comments

We present an approach to query modeling that uses the temporal distribution of documents in an initially retrieved set of documents. Such distributions tend to exhibit bursts, especially in news related document collections. We hypothesize that documents in those bursts are more likely to be relevant than others. Predicated on…

Trade-off between diversity and precision

Result diversification based on query-specific cluster ranking

20/03/2011 Journal Papers Publications No Comments

Result diversification is a retrieval strategy for dealing with ambiguous or multi-faceted queries by providing documents that cover as many facets of the query as possible. We propose a result diversification framework based on query-specific clustering and cluster ranking, in which diversification is restricted to documents belonging to clusters that…

The University of Amsterdam at Trec 2010: Session, Entity, and Relevance Feedback

20/01/2011 Publications Unrefereed No Comments

We describe the participation of the University of Amsterdam’s ILPS group in the session, entity, and relevance feedback track at TREC 2010. In the Session Track we explore the use of blind relevance feedback to bias a follow-up query towards or against the topics covered in documents returned to the…

Combining Concepts and Language Models for Information Access

10/12/2010 Publications Theses No Comments

Since the middle of last century, information retrieval has gained an increasing interest. Since its inception, much research has been devoted to finding optimal ways of representing both documents and queries, as well as improving ways of matching one with the other. In cases where document annotations or explicit semantics…

Supervised query modeling using Wikipedia

14/07/2010 Conference Papers Publications No Comments

In a web retrieval setting, there is a clear need for precision enhancing methods. For example, the query “the secret garden” (a novel that has been adapted into movies and musicals) is a query that is easily led astray because of the generality of the individual query terms. While some…

Conceptual language models for domain-specific retrieval

02/07/2010 Journal Papers Publications No Comments

Over the years, various meta-languages have been used to manually enrich documents with conceptual knowledge of some kind. Examples include keyword assignment to citations or, more recently, tags to websites. In this paper we propose generative concept models as an extension to query modeling within the language modeling framework, which…

Heuristic Ranking and Diversification of Web Documents

20/01/2010 Publications Unrefereed No Comments

We describe the participation of the University of Amsterdam’s Intelligent Systems Lab in the web track at TREC 2009. We participated in the adhoc and diversity task. We find that spam is an important issue in the ad hoc task and that Wikipedia-based heuristic optimization approaches help to boost the…

Edgar Meij

Tag: Language modeling