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#ifndef INCLUDED_NJN_DYNPROGPROBPROTO
#define INCLUDED_NJN_DYNPROGPROBPROTO
/* $Id: $
* ===========================================================================
*
* PUBLIC DOMAIN NOTICE
* National Center for Biotechnology Information
*
* This software/database is a "United States Government Work" under the
* terms of the United States Copyright Act. It was written as part of
* the author's offical duties as a United States Government employee and
* thus cannot be copyrighted. This software/database is freely available
* to the public for use. The National Library of Medicine and the U.S.
* Government have not placed any restriction on its use or reproduction.
*
* Although all reasonable efforts have been taken to ensure the accuracy
* and reliability of the software and data, the NLM and the U.S.
* Government do not and cannot warrant the performance or results that
* may be obtained by using this software or data. The NLM and the U.S.
* Government disclaim all warranties, express or implied, including
* warranties of performance, merchantability or fitness for any particular
* purpose.
*
* Please cite the author in any work or product based on this material.
*
* ===========================================================================*/
/*****************************************************************************
File name: njs_dynprogprobproto.hpp
Author: John Spouge
Contents:
******************************************************************************/
#include <vector>
#include <cstdlib>
namespace Njn {
class DynProgProbProto {
// DynProgProbProto performs updates for probabilities in a dynamic programming computation.
// The object behaves as follows:
//
// Default:
// (1) The initial state of the dynamic programming computation is 0 with probability 1.0.
//
// Behavior:
// (2) If input_ is the computation's input, it replaces oldValue_ with NewValueFct (oldValue_, input_)
// (3) The dynamic programming function can be reset with setValueFct (...).
// (4) The probability for the input can be reset with setInput (...).
// (5) The probability of input_ = [0, dimInputProb_) is inputProb_ [input_].
// (6) getProb (long int i_) returns the probability corresponding to the long int value i_.
public:
typedef long int ValueFct (long int oldValue_, size_t input_);
// function for producing new value from old value and input state
virtual ~DynProgProbProto ();
virtual inline operator bool () const = 0; // ? is the object ready for computation ?
virtual void clear () = 0; // restarts the computation
virtual void update () = 0; // updates dynamic prog probs
virtual inline double getProb (long int value_) const = 0; // probability value
virtual inline size_t getStep () const = 0; // current index : starts at 0
virtual inline long int getValueLower () const = 0; // present lower long int value in the array
virtual inline long int getValueUpper () const = 0; // one beyond present upper long int value in the array
};
}
#endif
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