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#ifndef _theplu_yat_utility_needleman_wunch |
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#define _theplu_yat_utility_needleman_wunch |
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// $Id$ |
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/* |
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Copyright (C) 2023 Peter Johansson |
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This file is part of the yat library, https://dev.thep.lu.se/yat |
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The yat library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License as |
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published by the Free Software Foundation; either version 3 of the |
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License, or (at your option) any later version. |
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The yat library 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 GNU |
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General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with yat. If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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#include "Aligner.h" |
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#include "Matrix.h" |
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#include <boost/concept_check.hpp> |
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#include <cstddef> // size_t |
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#include <iostream> |
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namespace theplu { |
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namespace yat { |
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namespace utility { |
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/** |
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\since New in yat 0.21 |
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*/ |
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class NeedlemanWunsch |
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{ |
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public: |
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/** |
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\brief Constructor |
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Same as NeedlemanWunsch(gap, open_gap, gap, open_gap) |
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*/ |
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explicit NeedlemanWunsch(double gap=0, double open_gap=0); |
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/** |
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\brief Constructor |
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\param vertical_gap Penalty for extending a vertical gap. A |
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vertical gap means consuming a reference element i.e. a |
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deletion in query sequence. |
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\param open_vertical_gap Open a deletion. Total |
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cost for a deletion is open_vertical_gap + N * |
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vertical_gap. |
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\param horizon_gap Penalty for extending a insertion. |
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\param open_horizon_gap Penalty for open an insertion. Total |
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penalty for a insertion is open_horizon_gap + N * horizon_gap. |
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*/ |
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NeedlemanWunsch(double vertical_gap, double open_vertical_gap, |
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double horizon_gap, double open_horizon_gap); |
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/** |
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The CIGAR here is slightly different compared to CIGAR in |
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Aligner as it uses BAM_CEQUAL and BAM_CDIFF rather than |
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BAM_CMATCH. Also, if first element of query is not aligned |
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against the first element of the reference, that is reflected |
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with an initial BAM_CDEL in the CIGAR. All elements in |
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reference and query are thereby represented in the CIGAR and |
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query_length() equals the length of the passed query and |
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reference_length() equals the length of the passed reference. |
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\return CIGAR reflecting latest performed alignment |
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*/ |
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const Aligner::Cigar& cigar(void) const; |
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/** |
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\return score matrix |
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*/ |
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const Matrix& score(void) const; |
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/** |
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Find best alignment using Needleman-Wunsch algorithm based on the |
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dot-matrix. Each row in \a dot corresponds to an element in |
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reference, and each column corresponds to an element in the |
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query. |
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\return alignment score |
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*/ |
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double operator()(const MatrixBase& dot); |
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/** |
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Calculate a dot-matrix of size query_end-query_begin X |
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reference_end-reference_begin where the element ij is 1.0 if |
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reference_begin[i] == query_begin[j] and -mismatch otherwise. |
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Type Requirements: |
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- \c RandomAccessIterator1 is a \readable_iterator |
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- \c RandomAccessIterator1 is a \random_access_traversal_iterator |
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- \c RandomAccessIterator2 is a \readable_iterator |
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- \c RandomAccessIterator2 is a \random_access_traversal_iterator |
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*/ |
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template<typename RandomAccessIterator1, typename RandomAccessIterator2> |
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double operator()(RandomAccessIterator1 reference_begin, |
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RandomAccessIterator1 reference_end, |
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RandomAccessIterator2 query_begin, |
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RandomAccessIterator2 query_end, |
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double mismatch=0); |
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private: |
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Aligner aligner_; |
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Aligner::Cigar cigar_; |
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Matrix score_; |
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}; |
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// template implementaion |
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template<typename RandomAccessIterator1, typename RandomAccessIterator2> |
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double NeedlemanWunsch::operator()(RandomAccessIterator1 reference_begin, |
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RandomAccessIterator1 reference_end, |
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RandomAccessIterator2 query_begin, |
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RandomAccessIterator2 query_end, |
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double mismatch) |
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{ |
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using boost_concepts::ReadableIterator; |
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using boost_concepts::RandomAccessTraversal; |
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BOOST_CONCEPT_ASSERT((ReadableIterator<RandomAccessIterator1>)); |
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BOOST_CONCEPT_ASSERT((RandomAccessTraversal<RandomAccessIterator1>)); |
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BOOST_CONCEPT_ASSERT((ReadableIterator<RandomAccessIterator2>)); |
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BOOST_CONCEPT_ASSERT((RandomAccessTraversal<RandomAccessIterator2>)); |
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Matrix dot(reference_end-reference_begin, query_end-query_begin, -mismatch); |
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for (size_t i=0; i<dot.rows(); ++i) |
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for (size_t j=0; j<dot.columns(); ++j) |
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if (reference_begin[i] == query_begin[j]) |
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dot(i, j) = 1; |
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return this->operator()(dot); |
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} |
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}}} // of namespace utility, yat, and theplu |
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#endif |