COSC-4P80-Assignment-1/include/a1.h

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#pragma once
/*
* Copyright (C) 2024 Brett Terpstra
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef COSC_4P80_ASSIGNMENT_1_A1_H
#define COSC_4P80_ASSIGNMENT_1_A1_H
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#include <blt/std/logging.h>
#include <blt/math/matrix.h>
#include <blt/math/log_util.h>
namespace a1
{
void test_math()
{
blt::generalized_matrix<float, 1, 4> input{1, -1, -1, 1};
blt::generalized_matrix<float, 1, 3> output{1, 1, 1};
blt::generalized_matrix<float, 4, 3> expected{
blt::vec4{1, -1, -1, 1},
blt::vec4{1, -1, -1, 1},
blt::vec4{1, -1, -1, 1}
};
auto w_matrix = input.transpose() * output;
BLT_ASSERT(w_matrix == expected && "MATH MATRIX FAILURE");
blt::vec4 one{5, 1, 3, 0};
blt::vec4 two{9, -5, -8, 3};
blt::generalized_matrix<float, 1, 4> g1{5, 1, 3, 0};
blt::generalized_matrix<float, 1, 4> g2{9, -5, -8, 3};
BLT_ASSERT(g1 * g2.transpose() == blt::vec4::dot(one, two) && "MATH DOT FAILURE");
}
template<typename input_t>
float crosstalk(const input_t& i, const input_t& j)
{
return i * j.transpose();
}
template<typename T, blt::u32 rows, blt::u32 columns>
blt::generalized_matrix<T, rows, columns> threshold(const blt::generalized_matrix<T, rows, columns>& y,
const blt::generalized_matrix<T, rows, columns>& base)
{
blt::generalized_matrix<T, rows, columns> result;
for (blt::u32 i = 0; i < columns; i++)
{
for (blt::u32 j = 0; j < rows; j++)
result[i][j] = y[i][j] > 1 ? 1 : (y[i][j] < -1 ? -1 : base[i][j]);
}
return result;
}
template<typename T, blt::size_t size>
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blt::size_t difference(const std::array<T, size>& a, const std::array<T, size>& b)
{
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blt::size_t count = 0;
for (const auto& [a_val, b_val] : blt::in_pairs(a, b))
{
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if (a_val != b_val)
count++;
}
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return count;
}
template<typename T, blt::size_t size>
bool equal(const std::array<T, size>& a, const std::array<T, size>& b)
{
return difference(a, b) == 0;
}
template<typename weight_t, typename input_t, typename output_t>
std::pair<input_t, output_t> run_step(const weight_t& associated_weights, const input_t& input, const output_t& output)
{
output_t output_recall = input * associated_weights;
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input_t input_recall = output_recall * associated_weights.transpose();
// BLT_DEBUG_STREAM << "Input: " << input.vec_from_column_row() << "\nOutput: " << output.vec_from_column_row() << '\n';
// BLT_DEBUG_STREAM << "Recalled Input: " << a1::threshold(input_recall, input).vec_from_column_row() << "\nRecalled Output: "
// << a1::threshold(output_recall, output).vec_from_column_row() << '\n';
return std::pair{a1::threshold(input_recall, input), a1::threshold(output_recall, output)};
}
template<typename weight_t, typename T, typename G, blt::size_t size>
void check_recall(const weight_t& weights, const std::array<G, size>& inputs, const std::array<T, size>& outputs)
{
for (const auto& [index, val] : blt::enumerate(inputs))
{
auto result = run_step(weights, val, outputs[index]);
if (result.first != val)
BLT_ERROR("Recall of input #%ld failed", index + 1);
else
BLT_INFO("Recall of input #%ld passed", index + 1);
if (result.second != outputs[index])
BLT_ERROR("Recall of output #%ld failed", index + 1);
else
BLT_INFO("recall of output #%ld passed", index + 1);
}
}
}
#endif //COSC_4P80_ASSIGNMENT_1_A1_H