116 lines
5.5 KiB
Text
116 lines
5.5 KiB
Text
OpenFst - Release 1.3
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* Support for non-fatal exits on errors: (1.3.1)
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* Added FLAGS_fst_error_fatal: FST errors are
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fatal if true (default); o.w. return objects flagged as bad:
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e.g., FSTs - kError
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prop. true, FST weights - not a Member().
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* Added kError property bit signifying bad FST
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* Added NoWeight() method to FST weight requirements that returns
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weight that is not a Member().
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* Various improvements to the FAR extensions (1.3.1)
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* a single FST is now a FAR type
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* FLAGS_initial_symbols: Uses the symbol table from the
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first FST in the archive for all entries"
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* Input/output to standard input/output for some FAR and arc types
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* --with-icu configuration option no longer needed (1.3.1)
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* Improved flags usage esp. if use SET_FLAGS not SetFlags/InitFst (1.3.2)
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* Added 'fst' as possible far writer type (1.3.2)
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* phi matcher can now accept 0 as the phi label (1.3.2)
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* Added ngram-fst extension (1.3.2)
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* Improved performance of PDT composition (1.3.3)
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* Memory-map support (1.3.3)
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* Fixed cross-FST serialization issues (1.3.3)
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* Fixed NGramFst off-by-one issue (1.3.3)
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* farextract now allows one to specify a list of comma-separated keys,
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including key ranges (1.3.3)
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OpenFst - Release 1.2
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* Added lookahead matching and filtering for faster composition
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* Added EditFst for mutation of o.w. immutable FSTs
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* Added script sub-namespace defining type FstClass - a non-templated
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Fst<Arc> to hold the arc template type internally. This and FST
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operations on it allow easier I/O and scripting at the cost of some
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runtime dispatching.
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* Added per-arc-iterator control of Fst caching.
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* Added PowerWeight and Power Arc.
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* Added SparsePowerWeight and SparsePowerArc (1.2.4)
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* Added SignedLogWeight and SignedLogArc (1.2.4)
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* Added ExpectationWeight and ExpectationArc (1.2.4)
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* Added AStarQueue, PruneQueue and NaturalPruneQueue disciplines (1.2.6)
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* Added Log64Weight and Log64Arc to FST library throughout, including
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support throughout scripts/bins/dsos (1.2.8)
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* Added delayed RandGenFst that outputs tree of paths weighted
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by count (1.2.8)
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* Added fstsymbols shell-level command
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* Added total weight removal option to pushing
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* Changed methods for symbol table mutation:
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use MutableInputSymbols()/MutableOutputSymbols().
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* Numerous efficiency improvements esp in composition, replace, and caching
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* Made "fstmap" handle semiring conversion by adding "to_std", "to_log"
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and "to_log64" as supported 'map_type' arguments (1.2.8).
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* Made the destructive implementation of RmEpsilon skip over states
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admitting no non-epsilon incoming transition (1.2.8).
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* Fixed numerous bugs (1.2 through 1.2.9) including:
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- improper types of some approximation deltas
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- sub-optimal hashing functions
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- issues in internal reuse of shortest distance
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- hashing bug in FloatWeight
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- bug in shortest path queue
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- symbol table checksumming issues
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- various C++ standards issues
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- Visit() behavior when visitation aborted
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- Decode() hash performance bug (1.2.1)
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- EditFst::Copy(bool) method when the boolean parameter is true (1.2.7)
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- SymbolTable memory leak in Invert() (1.2.8)
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- Added escaping of " and \ in labels in fstdraw, needed for dot to
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function properly (1.2.8)
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- Fixed handling of final weight of start state in fstpush (1.2.8)
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- Added FST_LL_FORMAT to fix 64-bit integer printf issues (1.2.9)
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- Fixed missing <functional> includes (1.2.9)
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- Fixed reused local variable names (1.2.9)
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- Fixed passing string by reference in FstDraw args (1.2.9)
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* Added extensions directories including:
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- finite-state archive (FAR) utilities,
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added stlist format supporting writing/reading to/from standard out/in
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at the library-level (1.2.8)
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- compact fsts
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- lookahead fsts
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- pushdown transducers (improved in 1.2.1 through 1.2.7).
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* Added StateMap/StateMapFst; renamed Map/MapFst to ArcMap/ArcMapFst;
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map/MapFst retained (but deprecated) (1.2.9)
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* Deleted ArcSum() and ArcMerge; use StateMap w/ ArcSumMapper and
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ArcUniqueMapper (1.2.9).
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* Incremented version of ConstFst/CompactFsts to stop memory alignment
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that fails on pipes. Made old version raises errors when read on
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pipes (1.2.9).
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* Improved determinize hash (1.2.9)
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* Removed stdio uses (1.2.10)
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* Fixed library ordering issues esp. with newer GNU build tools (1.2.10)
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OpenFst - Release 1.1
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* Added compat.h to src/include/fst to fix missing defines
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* Fixed bug in acyclic minimization that led to non-minimal
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(but equiv) results
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* Fixed missing FST typedef in various matchers in matcher.h
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so that they can be cascaded
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* Opened file streams binary where appropriate
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OpenFst - Release 1.0
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Additions to beta version:
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* Matcher class added for matching labels at FST states. Includes
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special matchers for sigma (any), rho ('rest'), and phi ('fail')
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labels. (see matcher.h)
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* Composition generalized with arbitrary filters, matchers, and state tables.
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Sequence and matching composition filters provided. (see compose.h,
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compose-filter.h, matcher.h, state-table.h)
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* Unique n-best (see shortest-path.h)
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* Pruning in determinization and epsilon removal (see determinize.h,
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rmepsilon.h)
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* New Fst classes:
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* Compact Fsts for space-efficient representation (see compact-fst.h)
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* New Weight classes:
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* MinMax
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* Lexicographic
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* Miscellaneous bug fixes
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