82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
// Copyright (c) 2017 ond onwards The McBopomofo Authors.
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#ifndef USEROVERRIDEMODEL_H
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#define USEROVERRIDEMODEL_H
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#include <list>
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#include <map>
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#include <string>
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#include "Gramambular.h"
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namespace McBopomofo {
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class UserOverrideModel {
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public:
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UserOverrideModel(size_t capacity, double decayConstant);
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void observe(const std::vector<Formosa::Gramambular::NodeAnchor>& walkedNodes,
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size_t cursorIndex,
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const std::string& candidate,
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double timestamp);
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std::string suggest(const std::vector<Formosa::Gramambular::NodeAnchor>& walkedNodes,
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size_t cursorIndex,
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double timestamp);
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private:
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struct Override {
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size_t count;
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double timestamp;
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Override()
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: count(0)
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, timestamp(0.0)
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{
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}
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};
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struct Observation {
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size_t count;
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std::map<std::string, Override> overrides;
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Observation()
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: count(0)
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{
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}
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void update(const std::string& candidate, double timestamp);
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};
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typedef std::pair<std::string, Observation> KeyObservationPair;
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size_t m_capacity;
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double m_decayExponent;
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std::list<KeyObservationPair> m_lruList;
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std::map<std::string, std::list<KeyObservationPair>::iterator> m_lruMap;
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};
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}; // namespace McBopomofo
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#endif
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