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// $Id$ |
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/* |
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Copyright (C) 2005, 2006, 2007, 2008 Jari Häkkinen, Peter Johansson |
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Copyright (C) 2010, 2012 Peter Johansson |
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This file is part of the yat library, http://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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|
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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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|
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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 <http://www.gnu.org/licenses/>. |
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*/ |
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#include <config.h> |
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#include "KernelLookup.h" |
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#include "MatrixLookup.h" |
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#include "MatrixLookupWeighted.h" |
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#include "yat/utility/Deleter.h" |
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#include "yat/utility/Matrix.h" |
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#include "yat/utility/MatrixWeighted.h" |
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|
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#include <cassert> |
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|
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namespace theplu { |
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namespace yat { |
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namespace classifier { |
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|
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KernelLookup::KernelLookup(const Kernel& kernel, const bool own) |
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: kernel_(&kernel, utility::Deleter(own)) |
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{ |
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column_index_ = utility::Index(kernel.size()); |
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row_index_=column_index_; |
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} |
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|
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|
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KernelLookup::KernelLookup(const Kernel& kernel, |
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const utility::Index& row, |
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const utility::Index& column, |
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const bool owner) |
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: column_index_(column), |
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kernel_(&kernel, utility::Deleter(owner)), |
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row_index_(row) |
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{ |
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// Checking that each row index is less than kernel.rows() |
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assert(validate(row_index_)); |
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// Checking that each column index is less than kernel.column() |
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assert(validate(column_index_)); |
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} |
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|
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|
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KernelLookup::KernelLookup(const KernelLookup& other, |
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const utility::Index& row, |
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const utility::Index& column) |
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: kernel_(other.kernel_) |
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{ |
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row_index_ = utility::Index(other.row_index_, row); |
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column_index_ = utility::Index(other.column_index_, column); |
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} |
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|
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|
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KernelLookup::KernelLookup(const KernelLookup& other) |
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: column_index_(other.column_index_), kernel_(other.kernel_), |
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row_index_(other.row_index_) |
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{ |
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// Checking that each row index is less than kernel.rows() |
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assert(validate(row_index_)); |
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// Checking that each column index is less than kernel.column() |
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assert(validate(column_index_)); |
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} |
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|
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|
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KernelLookup::KernelLookup(const KernelLookup& other, |
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const utility::Index& index, |
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const bool row) |
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: kernel_(other.kernel_) |
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{ |
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if (row){ |
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row_index_ = utility::Index(other.row_index_, index); |
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column_index_= other.column_index_; |
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} |
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else{ |
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column_index_ = utility::Index(other.column_index_, index); |
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row_index_= other.row_index_; |
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} |
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assert(kernel_->size()); |
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|
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// Checking that each row index is less than kernel.rows() |
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assert(validate(row_index_)); |
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// Checking that each column index is less than kernel.column() |
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assert(validate(column_index_)); |
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} |
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|
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|
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KernelLookup::~KernelLookup(void) |
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{ |
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} |
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|
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|
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KernelLookup::const_iterator KernelLookup::begin(void) const |
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{ |
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return const_iterator(const_iterator::iterator_type(*this, 0, 0), 1); |
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} |
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|
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|
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KernelLookup::const_column_iterator |
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KernelLookup::begin_column(size_t i) const |
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{ |
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return const_column_iterator(const_column_iterator::iterator_type(*this, |
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0,i), |
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columns()); |
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} |
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|
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|
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KernelLookup::const_row_iterator KernelLookup::begin_row(size_t i) const |
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{ |
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return const_row_iterator(const_row_iterator::iterator_type(*this,i,0), 1); |
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} |
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|
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|
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size_t KernelLookup::columns(void) const |
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{ |
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return column_index_.size(); |
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} |
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|
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|
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MatrixLookup KernelLookup::data(void) const |
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{ |
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assert(!weighted()); |
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05 Mar 08 |
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return MatrixLookup(kernel_->data(), column_index_, false); |
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} |
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|
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|
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MatrixLookupWeighted KernelLookup::data_weighted(void) const |
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{ |
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05 Mar 08 |
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assert(weighted()); |
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using utility::Index; // just to avoid long line |
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return MatrixLookupWeighted(kernel_->data_weighted(), |
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Index(kernel_->data_weighted().rows()), |
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19 Mar 10 |
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column_index_); |
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} |
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|
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|
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double KernelLookup::element(const DataLookup1D& vec, size_t i) const |
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26 Dec 06 |
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{ |
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26 Dec 06 |
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return kernel_->element(vec, row_index_[i]); |
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} |
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|
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|
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double KernelLookup::element(const DataLookupWeighted1D& vec, size_t i) const |
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26 Dec 06 |
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{ |
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26 Dec 06 |
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return kernel_->element(vec, row_index_[i]); |
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26 Dec 06 |
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} |
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|
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|
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KernelLookup::const_iterator KernelLookup::end(void) const |
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10 Feb 08 |
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{ |
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10 Feb 08 |
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return const_iterator(const_iterator::iterator_type(*this, rows(), 0), 1); |
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10 Feb 08 |
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} |
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10 Feb 08 |
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|
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|
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18 Feb 08 |
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KernelLookup::const_column_iterator KernelLookup::end_column(size_t i) const |
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10 Feb 08 |
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{ |
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03 Oct 12 |
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return const_column_iterator(const_column_iterator::iterator_type(*this, |
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18 Feb 08 |
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174 |
rows(),i), |
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18 Feb 08 |
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columns()); |
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10 Feb 08 |
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} |
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|
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|
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KernelLookup::const_row_iterator KernelLookup::end_row(size_t i) const |
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10 Feb 08 |
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{ |
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18 Feb 08 |
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return const_row_iterator(const_row_iterator::iterator_type(*this,i+1,0),1); |
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10 Feb 08 |
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182 |
} |
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|
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|
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size_t KernelLookup::rows(void) const |
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23 Feb 08 |
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{ |
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23 Feb 08 |
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187 |
return row_index_.size(); |
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23 Feb 08 |
peter |
188 |
} |
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23 Feb 08 |
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189 |
|
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23 Feb 08 |
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190 |
|
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05 Mar 08 |
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191 |
KernelLookup KernelLookup::selected(const utility::Index& inputs) const |
545 |
06 Mar 06 |
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192 |
{ |
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11 Feb 07 |
peter |
193 |
const Kernel* kernel; |
746 |
11 Feb 07 |
peter |
194 |
if (kernel_->weighted()){ |
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03 Oct 12 |
peter |
195 |
const MatrixLookupWeighted* ms = |
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03 Oct 12 |
peter |
196 |
new MatrixLookupWeighted(data_weighted(),inputs, |
2223 |
19 Mar 10 |
peter |
197 |
utility::Index(data_weighted().columns())); |
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05 Mar 08 |
peter |
198 |
kernel = kernel_->make_kernel(*ms, true); |
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11 Feb 07 |
peter |
199 |
} |
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11 Feb 07 |
peter |
200 |
else { |
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11 Feb 07 |
peter |
// matrix with selected features |
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05 Mar 08 |
peter |
202 |
const MatrixLookup* ms = new MatrixLookup(data(),inputs,true); |
746 |
11 Feb 07 |
peter |
203 |
kernel = kernel_->make_kernel(*ms,true); |
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11 Feb 07 |
peter |
204 |
} |
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05 Mar 08 |
peter |
205 |
return KernelLookup(*kernel, true); |
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06 Mar 06 |
peter |
206 |
} |
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06 Mar 06 |
peter |
207 |
|
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25 Sep 06 |
peter |
208 |
|
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05 Mar 08 |
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209 |
KernelLookup KernelLookup::test_kernel(const MatrixLookup& data) const |
658 |
25 Sep 06 |
peter |
210 |
{ |
658 |
25 Sep 06 |
peter |
211 |
if (!weighted()){ |
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26 Feb 08 |
peter |
212 |
assert(data.rows()==kernel_->data().rows()); |
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03 Oct 12 |
peter |
213 |
utility::Matrix* data_all = |
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22 Feb 08 |
peter |
214 |
new utility::Matrix(data.rows(), row_index_.size()+data.columns()); |
659 |
26 Sep 06 |
peter |
215 |
|
659 |
26 Sep 06 |
peter |
216 |
for (size_t i=0; i<data_all->rows(); ++i) { |
659 |
26 Sep 06 |
peter |
217 |
|
659 |
26 Sep 06 |
peter |
// first some columns from data in kernel_ |
659 |
26 Sep 06 |
peter |
219 |
for (size_t j=0; j<row_index_.size(); ++j){ |
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03 Oct 12 |
peter |
220 |
(*data_all)(i,j) = kernel_->data()(i,row_index_[j]); |
659 |
26 Sep 06 |
peter |
221 |
} |
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03 Oct 12 |
peter |
222 |
|
658 |
25 Sep 06 |
peter |
// last columns are equal to new data |
659 |
26 Sep 06 |
peter |
224 |
for (size_t j=0;j<data.columns(); ++j){ |
658 |
25 Sep 06 |
peter |
225 |
(*data_all)(i,j+row_index_.size()) = data(i,j); |
659 |
26 Sep 06 |
peter |
226 |
} |
658 |
25 Sep 06 |
peter |
227 |
} |
658 |
25 Sep 06 |
peter |
228 |
std::vector<size_t> column_index; |
658 |
25 Sep 06 |
peter |
229 |
column_index.reserve(data.columns()); |
658 |
25 Sep 06 |
peter |
230 |
for (size_t i=0;i<data.columns(); ++i) |
658 |
25 Sep 06 |
peter |
231 |
column_index.push_back(i+row_index_.size()); |
659 |
26 Sep 06 |
peter |
232 |
|
659 |
26 Sep 06 |
peter |
233 |
std::vector<size_t> row_index; |
659 |
26 Sep 06 |
peter |
234 |
row_index.reserve(row_index_.size()); |
659 |
26 Sep 06 |
peter |
235 |
for (size_t i=0;i<row_index_.size(); ++i) |
659 |
26 Sep 06 |
peter |
236 |
row_index.push_back(i); |
659 |
26 Sep 06 |
peter |
237 |
|
659 |
26 Sep 06 |
peter |
238 |
const MatrixLookup* tmp = new MatrixLookup(*data_all, true); |
659 |
26 Sep 06 |
peter |
239 |
|
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03 Oct 12 |
peter |
240 |
const Kernel* kernel = |
659 |
26 Sep 06 |
peter |
241 |
kernel_->make_kernel(*tmp, true); |
659 |
26 Sep 06 |
peter |
242 |
|
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03 Oct 12 |
peter |
243 |
return KernelLookup(*kernel, utility::Index(row_index), |
1206 |
05 Mar 08 |
peter |
244 |
utility::Index(column_index), true); |
658 |
25 Sep 06 |
peter |
245 |
} |
658 |
25 Sep 06 |
peter |
246 |
|
1165 |
26 Feb 08 |
peter |
247 |
assert(data.rows()==kernel_->data_weighted().rows()); |
658 |
25 Sep 06 |
peter |
// kernel_ holds MatrixLookupWeighted, hence new Kernel also |
658 |
25 Sep 06 |
peter |
// should hold a MatrixLookupweighted. |
2861 |
03 Oct 12 |
peter |
250 |
utility::MatrixWeighted* x_all = |
1581 |
15 Oct 08 |
peter |
251 |
new utility::MatrixWeighted(data.rows(), rows()+data.columns()); |
1165 |
26 Feb 08 |
peter |
252 |
const MatrixLookupWeighted& kernel_data = kernel_->data_weighted(); |
658 |
25 Sep 06 |
peter |
253 |
|
658 |
25 Sep 06 |
peter |
254 |
for (size_t i=0; i<data.rows(); ++i){ |
659 |
26 Sep 06 |
peter |
255 |
|
659 |
26 Sep 06 |
peter |
// first some columns from data in kernel_ |
658 |
25 Sep 06 |
peter |
257 |
for (size_t j=0; j<row_index_.size(); ++j){ |
2861 |
03 Oct 12 |
peter |
258 |
(*x_all)(i,j) = kernel_data(i,row_index_[j]); |
658 |
25 Sep 06 |
peter |
259 |
} |
659 |
26 Sep 06 |
peter |
260 |
|
658 |
25 Sep 06 |
peter |
// last columns are equal to new data |
658 |
25 Sep 06 |
peter |
262 |
for (size_t j=0;j<data.columns(); ++j){ |
1581 |
15 Oct 08 |
peter |
263 |
(*x_all)(i,j+row_index_.size()).data() = data(i,j); |
658 |
25 Sep 06 |
peter |
264 |
} |
658 |
25 Sep 06 |
peter |
265 |
} |
658 |
25 Sep 06 |
peter |
266 |
std::vector<size_t> column_index; |
658 |
25 Sep 06 |
peter |
267 |
column_index.reserve(data.columns()); |
658 |
25 Sep 06 |
peter |
268 |
for (size_t i=0;i<data.columns(); ++i) |
658 |
25 Sep 06 |
peter |
269 |
column_index.push_back(i+row_index_.size()); |
659 |
26 Sep 06 |
peter |
270 |
|
659 |
26 Sep 06 |
peter |
271 |
std::vector<size_t> row_index; |
659 |
26 Sep 06 |
peter |
272 |
row_index.reserve(row_index_.size()); |
659 |
26 Sep 06 |
peter |
273 |
for (size_t i=0;i<row_index_.size(); ++i) |
659 |
26 Sep 06 |
peter |
274 |
row_index.push_back(i); |
659 |
26 Sep 06 |
peter |
275 |
|
1581 |
15 Oct 08 |
peter |
276 |
MatrixLookupWeighted* tmp = new MatrixLookupWeighted(*x_all, true); |
659 |
26 Sep 06 |
peter |
277 |
const Kernel* kernel = kernel_->make_kernel(*tmp, true); |
1201 |
05 Mar 08 |
peter |
278 |
|
1201 |
05 Mar 08 |
peter |
279 |
|
2861 |
03 Oct 12 |
peter |
280 |
return KernelLookup(*kernel, row_index_, |
1206 |
05 Mar 08 |
peter |
281 |
utility::Index(column_index), true); |
658 |
25 Sep 06 |
peter |
282 |
} |
658 |
25 Sep 06 |
peter |
283 |
|
658 |
25 Sep 06 |
peter |
284 |
|
658 |
25 Sep 06 |
peter |
285 |
|
1206 |
05 Mar 08 |
peter |
286 |
KernelLookup KernelLookup::test_kernel(const MatrixLookupWeighted& data) const |
658 |
25 Sep 06 |
peter |
287 |
{ |
2861 |
03 Oct 12 |
peter |
288 |
utility::MatrixWeighted* x_all = |
1581 |
15 Oct 08 |
peter |
289 |
new utility::MatrixWeighted(data.rows(), rows()+data.columns()); |
658 |
25 Sep 06 |
peter |
290 |
|
658 |
25 Sep 06 |
peter |
291 |
if (weighted()){ |
1165 |
26 Feb 08 |
peter |
292 |
const MatrixLookupWeighted& kernel_data = kernel_->data_weighted(); |
2861 |
03 Oct 12 |
peter |
293 |
|
658 |
25 Sep 06 |
peter |
294 |
for (size_t i=0; i<data.rows(); ++i){ |
658 |
25 Sep 06 |
peter |
// first columns are equal to data in kernel_ |
658 |
25 Sep 06 |
peter |
296 |
for (size_t j=0; j<row_index_.size(); ++j){ |
1581 |
15 Oct 08 |
peter |
297 |
(*x_all)(i,j) = kernel_data(i,row_index_[j]); |
658 |
25 Sep 06 |
peter |
298 |
} |
658 |
25 Sep 06 |
peter |
299 |
} |
658 |
25 Sep 06 |
peter |
300 |
} |
658 |
25 Sep 06 |
peter |
301 |
else { |
658 |
25 Sep 06 |
peter |
302 |
|
658 |
25 Sep 06 |
peter |
303 |
for (size_t i=0; i<data.rows(); ++i){ |
658 |
25 Sep 06 |
peter |
// first columns are equal to data in kernel_ |
658 |
25 Sep 06 |
peter |
305 |
for (size_t j=0; j<row_index_.size(); ++j) |
1581 |
15 Oct 08 |
peter |
306 |
(*x_all)(i,j).data() = kernel_->data()(i,row_index_[j]); |
658 |
25 Sep 06 |
peter |
307 |
} |
658 |
25 Sep 06 |
peter |
308 |
} |
658 |
25 Sep 06 |
peter |
309 |
|
658 |
25 Sep 06 |
peter |
// last columns are equal to new data |
658 |
25 Sep 06 |
peter |
311 |
for (size_t i=0; i<data.rows(); ++i){ |
658 |
25 Sep 06 |
peter |
312 |
for (size_t j=0;j<data.columns(); ++j){ |
1581 |
15 Oct 08 |
peter |
313 |
(*x_all)(i,j+row_index_.size()) = data(i,j); |
658 |
25 Sep 06 |
peter |
314 |
} |
658 |
25 Sep 06 |
peter |
315 |
} |
2861 |
03 Oct 12 |
peter |
316 |
|
658 |
25 Sep 06 |
peter |
317 |
std::vector<size_t> column_index; |
658 |
25 Sep 06 |
peter |
318 |
column_index.reserve(data.columns()); |
658 |
25 Sep 06 |
peter |
319 |
for (size_t i=0;i<data.columns(); ++i) |
658 |
25 Sep 06 |
peter |
320 |
column_index.push_back(i+row_index_.size()); |
2861 |
03 Oct 12 |
peter |
321 |
const Kernel* kernel = |
1581 |
15 Oct 08 |
peter |
322 |
kernel_->make_kernel(MatrixLookupWeighted(*x_all, true)); |
2861 |
03 Oct 12 |
peter |
323 |
return KernelLookup(*kernel, row_index_, |
1206 |
05 Mar 08 |
peter |
324 |
utility::Index(column_index), true); |
658 |
25 Sep 06 |
peter |
325 |
} |
658 |
25 Sep 06 |
peter |
326 |
|
720 |
26 Dec 06 |
jari |
327 |
|
1167 |
26 Feb 08 |
peter |
328 |
/* |
720 |
26 Dec 06 |
jari |
const KernelLookup* |
1134 |
23 Feb 08 |
peter |
KernelLookup::training_data(const utility::Index& train) const |
720 |
26 Dec 06 |
jari |
331 |
{ |
1127 |
22 Feb 08 |
peter |
return new KernelLookup(*this,train,train); |
720 |
26 Dec 06 |
jari |
333 |
} |
1167 |
26 Feb 08 |
peter |
334 |
*/ |
720 |
26 Dec 06 |
jari |
335 |
|
720 |
26 Dec 06 |
jari |
336 |
|
1134 |
23 Feb 08 |
peter |
337 |
bool KernelLookup::validate(const utility::Index& index) const |
1134 |
23 Feb 08 |
peter |
338 |
{ |
1134 |
23 Feb 08 |
peter |
339 |
for (size_t i=0; i<index.size(); ++i) |
1134 |
23 Feb 08 |
peter |
340 |
if (index[i]>=kernel_->size()) |
1134 |
23 Feb 08 |
peter |
341 |
return false; |
1134 |
23 Feb 08 |
peter |
342 |
return true; |
1134 |
23 Feb 08 |
peter |
343 |
} |
1134 |
23 Feb 08 |
peter |
344 |
|
1134 |
23 Feb 08 |
peter |
345 |
|
720 |
26 Dec 06 |
jari |
346 |
bool KernelLookup::weighted(void) const |
720 |
26 Dec 06 |
jari |
347 |
{ |
720 |
26 Dec 06 |
jari |
348 |
return kernel_->weighted(); |
720 |
26 Dec 06 |
jari |
349 |
} |
720 |
26 Dec 06 |
jari |
350 |
|
720 |
26 Dec 06 |
jari |
351 |
|
2861 |
03 Oct 12 |
peter |
352 |
KernelLookup::const_reference |
1549 |
06 Oct 08 |
peter |
353 |
KernelLookup::operator()(size_t row, size_t column) const |
720 |
26 Dec 06 |
jari |
354 |
{ |
720 |
26 Dec 06 |
jari |
355 |
return (*kernel_)(row_index_[row],column_index_[column]); |
720 |
26 Dec 06 |
jari |
356 |
} |
720 |
26 Dec 06 |
jari |
357 |
|
680 |
11 Oct 06 |
jari |
358 |
}}} // of namespace classifier, yat, and theplu |