Initial CLD2 source upload.

git-svn-id: https://cld2.googlecode.com/svn/trunk@3 b252ecd4-b096-bf77-eb8e-91563289f87e
2013-06-24 23:52:45 +00:00
parent 84f0cff75d
commit af2750714b
65 changed files with 136486 additions and 0 deletions
--- a/internal/cldutil_offline.h
+++ b/internal/cldutil_offline.h
@@ -0,0 +1,71 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// 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
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//
+// Author: dsites@google.com (Dick Sites)
+//
+// Just the stuff shared between offline table builder and online detector
+//
+
+#ifndef I18N_ENCODINGS_CLD2_INTERNAL_NEW_CLDUTIL_OFFLINE_H__
+#define I18N_ENCODINGS_CLD2_INTERNAL_NEW_CLDUTIL_OFFLINE_H__
+
+#include "cldutil_shared.h"
+#include "integral_types.h"
+#include "lang_script.h"
+
+namespace CLD2 {
+
+//------------------------------------------------------------------------------
+// Offline: used by mapreduce or table construction
+//------------------------------------------------------------------------------
+
+// Find top two langs and scores for one word; underpins delta tables
+void DoWordScore(const char* isrc, int srclen, ULScript ulscript,
+                 const CLD2TableSummary* wrt_unigram_obj,
+                 const CLD2TableSummary* wrt_quadgram_obj,
+                 Language* lang1, int* score1,
+                 Language* lang2, int* score2);
+
+// For constructing tables
+// Given a vector of 3 probabilities 1..12, find subscript of best table match.
+// Minimizes RMS error
+// Brute-force version
+uint8 FindBestProb3Match(const uint8* prob3);
+
+// Not sure who calls this...
+// Return the probability for given language, or 0
+int GetProb(Language lang, uint32 probs);
+
+
+// Converts a unigram prob/lang byte into an approximate prob/lang triple
+// Just keeps the largest value.
+// ONLY used in mapreduce, doing refinement of language boundaries.
+uint32 ApproxProb3(int propval);
+
+
+// Take three packed languages and three probabilities 1..12 and put into uint32
+// For offline construction of tables
+uint32 ProbPackV2(uint8* plang3, uint8* prob3);
+
+// Take uint32 and unpack into three packed languages and three probabilities
+// For runtime use of tables
+void ProbUnpackV2(uint32 prob, uint8* plang3, uint8* prob3);
+
+}       // End namespace CLD2
+
+#endif  // I18N_ENCODINGS_CLD2_INTERNAL_NEW_CLDUTIL_OFFLINE_H__
+
+
+