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IPM
2006
77views more  IPM 2006»
13 years 4 months ago
A general matrix framework for modelling Information Retrieval
Content-oriented retrieval models are based on a document-term matrix, whereas link-oriented retrieval models are based on an adjacent (parentchild) matrix. Term frequency and inv...
Thomas Rölleke, Theodora Tsikrika, Gabriella ...
ECIR
2006
Springer
13 years 6 months ago
A Declarative DB-Powered Approach to IR
We present a prototype system using array comprehensions to bridge the gap between databases and information retrieval. It allows researchers to express their retrieval models in t...
Roberto Cornacchia, Arjen P. de Vries
IPM
2006
83views more  IPM 2006»
13 years 4 months ago
A risk minimization framework for information retrieval
This paper presents a probabilistic information retrieval framework in which the retrieval problem is formally treated as a statistical decision problem. In this framework, querie...
ChengXiang Zhai, John D. Lafferty
CIKM
2010
Springer
13 years 3 months ago
Hypergraph-based multilevel matrix approximation for text information retrieval
In Latent Semantic Indexing (LSI), a collection of documents is often pre-processed to form a sparse term-document matrix, followed by a computation of a low-rank approximation to...
Haw-ren Fang, Yousef Saad
SIGIR
2008
ACM
13 years 4 months ago
A general optimization framework for smoothing language models on graph structures
Recent work on language models for information retrieval has shown that smoothing language models is crucial for achieving good retrieval performance. Many different effective smo...
Qiaozhu Mei, Duo Zhang, ChengXiang Zhai