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Classic IR Models
"... �Boolean model � simple model based on set theory � queries as Boolean expressions � adopted by many commercial systems �Vector space model � queries and documents as vectors in an Mdimensional space � M is the number of terms � find documents most similar to the query in the Mdimensional space �P ..."
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�Boolean model � simple model based on set theory � queries as Boolean expressions � adopted by many commercial systems �Vector space model � queries and documents as vectors in an Mdimensional space � M is the number of terms � find documents most similar to the query in the Mdimensional space
Vector space IR model
"... • Methods for extracting useful information from large (and often unstructured) collections of texts. • Information retrieval. • E.g. search in data base of abstracts of scientific papers: Given a query with a set of keywords, find all documents that are relevant. • Lots of stuff available (SAS Text ..."
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• Methods for extracting useful information from large (and often unstructured) collections of texts. • Information retrieval. • E.g. search in data base of abstracts of scientific papers: Given a query with a set of keywords, find all documents that are relevant. • Lots of stuff available (SAS Text Miner, Statistics Textmining toolbox...)
A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species
 Planta
, 1980
"... Abstract. Various aspects of the biochemistry of photosynthetic carbon assimilation in C3 plants are integrated into a form compatible with studies of gas exchange in leaves. These aspects include the kinetic properties of ribulose bisphosphate carboxylaseoxygenase; the requirements of the photosyn ..."
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Cited by 435 (0 self)
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of the photosynthetic carbon reduction and photorespiratory carbon oxidation cycles for reduced pyridine nucleotides; the dependence of electron transport on photon flux and the presence of a temperature dependent upper limit to electron transport. The measurements of gas exchange with which the model outputs may
From Sparse Solutions of Systems of Equations to Sparse Modeling of Signals and Images
, 2007
"... A fullrank matrix A ∈ IR n×m with n < m generates an underdetermined system of linear equations Ax = b having infinitely many solutions. Suppose we seek the sparsest solution, i.e., the one with the fewest nonzero entries: can it ever be unique? If so, when? As optimization of sparsity is combin ..."
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Cited by 423 (35 self)
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A fullrank matrix A ∈ IR n×m with n < m generates an underdetermined system of linear equations Ax = b having infinitely many solutions. Suppose we seek the sparsest solution, i.e., the one with the fewest nonzero entries: can it ever be unique? If so, when? As optimization of sparsity
MINING UNSTRUCTURED SOFTWARE REPOSITORIES USING IR MODELS
, 2012
"... MINING SOFTWARE REPOSITORIES, which is the process of analyzing the data related to software development practices, is an emerging field which aims toaid development teams in their day to day tasks. However, data in many software repositories is currently unused because the data is unstructured, an ..."
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Cited by 1 (0 self)
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is the idea that the research and practice of using IR models to mine unstructured software repositories can be improved by going beyond the current state of affairs. First, we propose new applications of IR models to existing software engineering tasks. Specifically, we present a technique to prioritize test
Quantum field theory on noncommutative spaces
"... A pedagogical and selfcontained introduction to noncommutative quantum field theory is presented, with emphasis on those properties that are intimately tied to string theory and gravity. Topics covered include the WeylWigner correspondence, noncommutative Feynman diagrams, UV/IR mixing, noncommuta ..."
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Cited by 393 (26 self)
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A pedagogical and selfcontained introduction to noncommutative quantum field theory is presented, with emphasis on those properties that are intimately tied to string theory and gravity. Topics covered include the WeylWigner correspondence, noncommutative Feynman diagrams, UV/IR mixing
The INQUERY Retrieval System
 In Proceedings of the Third International Conference on Database and Expert Systems Applications
"... As larger and more heterogeneous text databases become available, information retrieval research will depend on the development of powerful, efficient and flexible retrieval engines. In this paper, we describe a retrieval system (INQUERY) that is based on a probabilistic retrieval model and provides ..."
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Cited by 385 (45 self)
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As larger and more heterogeneous text databases become available, information retrieval research will depend on the development of powerful, efficient and flexible retrieval engines. In this paper, we describe a retrieval system (INQUERY) that is based on a probabilistic retrieval model
IR models based on network science: A research agenda
"... Abstract. We propose to use network science concepts to build a novel IR model. We show some examples to explain the idea and to provide an intuitive rationale, and we sketch some future research directions. 1 ..."
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Abstract. We propose to use network science concepts to build a novel IR model. We show some examples to explain the idea and to provide an intuitive rationale, and we sketch some future research directions. 1
The Maximum Entropy Approach and Probabilistic IR Models
 ACM TRANSACTIONS ON INFORMATION SYSTEMS
, 1998
"... The Principle of Maximum Entropy is discussed and two classic probabilistic models of information retrieval, the Binary Independence Model of Robertson and Sparck Jones and the Combination Match Model of Croft and Harper are derived using the maximum entropy approach. The assumptions on which the cl ..."
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Cited by 12 (0 self)
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The Principle of Maximum Entropy is discussed and two classic probabilistic models of information retrieval, the Binary Independence Model of Robertson and Sparck Jones and the Combination Match Model of Croft and Harper are derived using the maximum entropy approach. The assumptions on which
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