Image Models (and their Speech Model Cousins)
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This volume explores the interface between two diverse areas of applied mathematics which are both 'customers' of the maximum likelihood methodology; emission tomography and hidden Markov models as an approach to speech understanding. Other areas where maximum likelihood is used in this volume include parsing of text (Jelinek), microstructure of materials (Ji), DNA sequencing (Nelson). Most of the participants were in the main areas of speech or emission density reconstruction.
Contents:
- Iterative reconstruction algorithms based on cross-entropy minimization
- Stop consonants discrimination and clustering using nonlinear transformations and wavelets
- Maximum a posteriori image reconstructions from projections
- Direct parsing of text
- Hierarchical modelling for microstructure of certain brittle materials
- Hidden Markov Models estimation via the most informative stopping times for Vitervi algorithm
- Constrained stochastic language models
- Recovering DNA sequences from electrophoresis data
- Image and speech and EM
- Non-stationary hidden Markov models for speech recognition
- Applications of the EM algorithm to linear inverse problems with positivity constraints.
Contents:
- Iterative reconstruction algorithms based on cross-entropy minimization
- Stop consonants discrimination and clustering using nonlinear transformations and wavelets
- Maximum a posteriori image reconstructions from projections
- Direct parsing of text
- Hierarchical modelling for microstructure of certain brittle materials
- Hidden Markov Models estimation via the most informative stopping times for Vitervi algorithm
- Constrained stochastic language models
- Recovering DNA sequences from electrophoresis data
- Image and speech and EM
- Non-stationary hidden Markov models for speech recognition
- Applications of the EM algorithm to linear inverse problems with positivity constraints.
This IMA Volume in Mathematics and its Applications IMAGE MODELS (AND THEIR SPEECH MODEL COUSINS) is based on the proceedings of a workshop that was an integral part of the 1993-94 IMA program on "Emerging Applications of Probability." We thank Stephen E. Levinson and Larry Shepp for organizing the workshop and for editing the proceedings. We also take this opportunity to thank the National Science Foundation, the Army Research Office, and the National Security Agency, whose financial support made the workshop possible. A vner Friedman Willard Miller, Jr. v PREFACE This volume is an attempt to explore the interface between two diverse areas of applied mathematics that are both "customers" of the maximum likelihood methodology: emission tomography (on the one hand) and hid den Markov models as an approach to speech understanding (on the other hand). There are other areas where maximum likelihood is used, some of which are represented in this volume: parsing of text (Jelinek), microstruc ture of materials (Ji), and DNA sequencing (Nelson). Most of the partici pants were in the main areas of speech or emission density reconstruction. Of course, there are many other areas where maximum likelihood is used that are not represented here.
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