1 /*
2  * Copyright (C) 2014, The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "dictionary/structure/v4/content/dynamic_language_model_probability_utils.h"
18 
19 namespace latinime {
20 
21 // Used to provide stable probabilities even if the user's input count is small.
22 const int DynamicLanguageModelProbabilityUtils::ASSUMED_MIN_COUNTS[] = {8192, 2, 2, 1};
23 
24 // Encoded backoff weights.
25 // Note that we give positive values for trigrams and quadgrams that means the weight is more than
26 // 1.
27 // TODO: Apply backoff for main dictionaries and quit giving a positive backoff weight.
28 const int DynamicLanguageModelProbabilityUtils::ENCODED_BACKOFF_WEIGHTS[] = {-32, -4, 2, 8};
29 
30 // This value is used to remove too old entries from the dictionary.
31 const int DynamicLanguageModelProbabilityUtils::DURATION_TO_DISCARD_ENTRY_IN_SECONDS =
32         300 * 24 * 60 * 60; // 300 days
33 
34 } // namespace latinime
35