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src
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predictors
recencyPredictor.h
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/******************************************************
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* Presage, an extensible predictive text entry system
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* ---------------------------------------------------
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*
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* Copyright (C) 2008 Matteo Vescovi <matteo.vescovi@yahoo.co.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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**********(*)*/
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#ifndef PRESAGE_RECENCYPREDICTOR
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#define PRESAGE_RECENCYPREDICTOR
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#include "
predictor.h
"
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#include "../core/logger.h"
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#include "../core/dispatcher.h"
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class
RecencyPredictor
:
public
Predictor
,
public
Observer
{
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public
:
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RecencyPredictor
(
Configuration
*,
ContextTracker
*,
const
char
*);
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~RecencyPredictor
();
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virtual
Prediction
predict
(
const
size_t
size,
const
char
** filter)
const
;
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virtual
void
learn
(
const
std::vector<std::string>& change);
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virtual
void
update
(
const
Observable
* variable);
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private
:
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void
set_lambda
(
const
std::string& value);
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void
set_n_0
(
const
std::string& value);
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void
set_cutoff_threshold
(
const
std::string& value);
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std::string
LOGGER
;
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std::string
LAMBDA
;
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std::string
N_0
;
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std::string
CUTOFF_THRESHOLD
;
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double
lambda
;
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double
n_0
;
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size_t
cutoff_threshold
;
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Dispatcher<RecencyPredictor>
dispatcher
;
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};
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#endif // PRESAGE_RECENCYPREDICTOR
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