-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2016-ddafceae7b 2016-05-30 21:17:57.459630 --------------------------------------------------------------------------------
Name : openfst Product : Fedora 24 Version : 1.5.3 Release : 1.fc24 URL : http://www.openfst.org/ Summary : Weighted finite-state transducer library Description : OpenFst is a library for constructing, combining, optimizing, and searching weighted finite-state transducers (FSTs). Weighted finite-state transducers are automata where each transition has an input label, an output label, and a weight. The more familiar finite-state acceptor is represented as a transducer with each transition's input and output label equal. Finite-state acceptors are used to represent sets of strings (specifically, regular or rational sets); finite-state transducers are used to represent binary relations between pairs of strings (specifically, rational transductions). The weights can be used to represent the cost of taking a particular transition.
FSTs have key applications in speech recognition and synthesis, machine translation, optical character recognition, pattern matching, string processing, machine learning, information extraction and retrieval among others. Often a weighted transducer is used to represent a probabilistic model (e.g., an n-gram model, pronunciation model). FSTs can be optimized by determinization and minimization, models can be applied to hypothesis sets (also represented as automata) or cascaded by finite-state composition, and the best results can be selected by shortest-path algorithms.
-------------------------------------------------------------------------------- Update Information:
Changes in openfst 1.5.2 and 1.5.3: - FarReader's GetFst method now returns a pointer - Fixed FSTERROR macro - Fixed build flags for dlopen - Consolidated Python extension into single module - Adds optional minimization of non- deterministic FSTs - Python add_arc now takes an Arc object - Mutation methods of the Python Fst object can now be chained - Scripting API and Python weight objects now support semiring arithmetic Changes in opengrm-ngram 1.3.0: - Templated Arc to provide new hist-arc counting, supporting fractional count based Katz backoff models. - Updated error handling. - Updated code to better conform to Google C++ guidelines. - Added Bayesian model merging. - Some re- factoring of functions to improve efficiency, particularly those for distributed model building, such as ngram-complete and ngram-split. - Updated unit tests to run more quickly and to be less bash-specific. sphinxtrain was rebuilt for the updated openfst and opengrm-ngram libraries. --------------------------------------------------------------------------------
This update can be installed with the "yum" update program. Use su -c 'yum update openfst' at the command line. For more information, refer to "Managing Software with yum", available at https://docs.fedoraproject.org/yum/.
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