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Publications associées (199)

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Inferring Document Similarity from Hyper-links

Samy Bengio, David Grangier

Assessing semantic similarity between text documents is a crucial aspect in Information Retrieval systems. In this paper, we propose a technique to derive a similarity measure from hyper-link information. As linked documents are generally semantically clos ...

IDIAP2005

Exploiting Hyperlinks to Learn a Retrieval Model

Samy Bengio, David Grangier

Information Retrieval (IR) aims at solving a ranking problem: given a query

q

and a corpus

C

, the documents of

C

should be ranked such that the documents relevant to

q

appear above the others. This task is generally performed by ranking the documen ...

2005

Semantic Video Analysis for Adaptive Content Delivery and Automatic Description

Touradj Ebrahimi

We present an encoding framework which exploits semantics for video content delivery. The video content is organized based on the idea of main content message. In the work reported in this paper, the main content message is extracted from the video data th ...

2005

Integrating tradeoff support in product search tools for E-commerce sites

Pearl Pu Faltings, Li Chen

In a previously reported user study, we found that users were able to perform decision tradeoff tasks more efficiently and commit considerably fewer errors with the example critiquing interface than with the ranked list. We concluded that example-based sea ...

Association for Computing Machinery, New York, NY 10036-5701, United States2005

On the Convergence of Structured Search, Information Retrieval and Trust Management in Distributed Systems

Karl Aberer, Philippe Cudré-Mauroux, Zoran Despotovic

The database and information retrieval communities have long been recognized as being irreconcilable. Today, however, we witness a surprising convergence of the techniques used by both communities in decentralized, large-scale environments. The newly emerg ...

2005

Concept expansion using semantic fisheye views

Pearl Pu Faltings, Vincent Jean Fabrice Schickel

Exploratory search over a collection often requires users to iteratively apply a variety of strategies, such as searching for more general or more specific concepts in reaction to the information they encounter. Rich semantic models, such as WordNet, are p ...

Springer Verlag, Heidelberg, D-69121, Germany2005

Interactive semantic fisheye views for information workspaces

Frank Paul Janecek

In this thesis, we investigate the effectiveness of semantic fisheye views for opportunistic search and sensemaking tasks over large collections of annotated images. Semantic fisheye views are interactive visualization techniques that reveal semantic detai ...

EPFL2004

Opportunistic Search with Semantic Fisheye Views

Pearl Pu Faltings

Search goals are often too complex or poorly defined to be solved in a single query. While refining their search goals, users are likely to apply a variety of strategies, such as searching for more general or more specific concepts in reaction to the infor ...

2004

Eigenregions for Image Classification

Sabine Süsstrunk

For certain databases and classification tasks, analyzing images based on region features instead of image features results in more accurate classifications. We introduce eigenregions, which are geometrical features that encompass area, location and shape ...

Institute of Electrical and Electronics Engineers2004

Modeling Scenes with Local Descriptors and Latent Aspects

Daniel Gatica-Perez, Jean-Marc Odobez, Florent Monay Michaud, Pedro Manuel Da Silva Quelhas

We present a new approach to model visual scenes in image collections, based on local invariant features and probabilistic latent space models. Our formulation provides answers to three open questions:(1) whether the invariant local features are suitable f ...

IDIAP2004

Exploiting Hyperlinks to Learn a Retrieval Model

Samy Bengio, David Grangier

Information Retrieval (IR) aims at solving a ranking problem: given a query

q

and a corpus

C

, the documents of

C

should be ranked such that the documents relevant to

q

appear above the others. This task is generally performed by ranking the documen ...

2005