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Diffstat (limited to 'kaldi_io/src/kaldi/itf/context-dep-itf.h')
| -rw-r--r-- | kaldi_io/src/kaldi/itf/context-dep-itf.h | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/kaldi_io/src/kaldi/itf/context-dep-itf.h b/kaldi_io/src/kaldi/itf/context-dep-itf.h deleted file mode 100644 index 6a0bd0f..0000000 --- a/kaldi_io/src/kaldi/itf/context-dep-itf.h +++ /dev/null @@ -1,80 +0,0 @@ -// itf/context-dep-itf.h - -// Copyright 2009-2011 Microsoft Corporation; Go Vivace Inc. - -// See ../../COPYING for clarification regarding multiple authors -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY -// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED -// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, -// MERCHANTABLITY OR NON-INFRINGEMENT. -// See the Apache 2 License for the specific language governing permissions and -// limitations under the License. - - -#ifndef KALDI_ITF_CONTEXT_DEP_ITF_H_ -#define KALDI_ITF_CONTEXT_DEP_ITF_H_ -#include "base/kaldi-common.h" - -namespace kaldi { -/// @ingroup tree_group -/// @{ - -/// context-dep-itf.h provides a link between -/// the tree-building code in ../tree/, and the FST code in ../fstext/ -/// (particularly, ../fstext/context-dep.h). It is an abstract -/// interface that describes an object that can map from a -/// phone-in-context to a sequence of integer leaf-ids. -class ContextDependencyInterface { - public: - /// ContextWidth() returns the value N (e.g. 3 for triphone models) that says how many phones - /// are considered for computing context. - virtual int ContextWidth() const = 0; - - /// Central position P of the phone context, in 0-based numbering, e.g. P = 1 for typical - /// triphone system. We have to see if we can do without this function. - virtual int CentralPosition() const = 0; - - /// The "new" Compute interface. For typical topologies, - /// pdf_class would be 0, 1, 2. - /// Returns success or failure; outputs the pdf-id. - /// - /// "Compute" is the main function of this interface, that takes a - /// sequence of N phones (and it must be N phones), possibly - /// including epsilons (symbol id zero) but only at positions other - /// than P [these represent unknown phone context due to end or - /// begin of sequence]. We do not insist that Compute must always - /// output (into stateseq) a nonempty sequence of states, but we - /// anticipate that stateseq will alyway be nonempty at output in - /// typical use cases. "Compute" returns false if expansion somehow - /// failed. Normally the calling code should raise an exception if - /// this happens. We can define a different interface later in - /// order to handle other kinds of information-- the underlying - /// data-structures from event-map.h are very flexible. - virtual bool Compute(const std::vector<int32> &phoneseq, int32 pdf_class, - int32 *pdf_id) const = 0; - - - - /// NumPdfs() returns the number of acoustic pdfs (they are numbered 0.. NumPdfs()-1). - virtual int32 NumPdfs() const = 0; - - virtual ~ContextDependencyInterface() {}; - ContextDependencyInterface() {} - - /// Returns pointer to new object which is copy of current one. - virtual ContextDependencyInterface *Copy() const = 0; - private: - KALDI_DISALLOW_COPY_AND_ASSIGN(ContextDependencyInterface); -}; -/// @} -} // namespace Kaldi - - -#endif |