From 6fd23da97fa9700f59c61a966b4bf7d25fa46b34 Mon Sep 17 00:00:00 2001
From: Paul Oliver <contact@pauloliver.dev>
Date: Thu, 29 Feb 2024 03:15:03 +0100
Subject: initial commit

---
 MemCell.cpp | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 MemCell.cpp

(limited to 'MemCell.cpp')

diff --git a/MemCell.cpp b/MemCell.cpp
new file mode 100644
index 0000000..4e5b17b
--- /dev/null
+++ b/MemCell.cpp
@@ -0,0 +1,83 @@
+#include "MemCell.hpp"
+
+MemCell::MemCell(unsigned inputCount, bool zeroed)
+:   m_input     (inputCount, zeroed),
+    m_inputGate (inputCount + 1, zeroed),
+    m_memGate   (inputCount + 1, zeroed),
+    m_outputGate(inputCount + 1, zeroed)
+{
+    m_inputCount = inputCount;
+}
+
+void MemCell::setChromosome(const Chromosome &chromosome)
+{
+    unsigned chrSize = getChromosomeSize();
+
+    if (chromosome.size() != chrSize)
+    {
+        return;
+    }
+
+    auto l1 = chromosome.begin() + m_input.getChromosomeSize();
+    auto l2 = l1 + m_inputGate.getChromosomeSize();
+    auto l3 = l2 + m_memGate.getChromosomeSize();
+
+    Chromosome chrInput(chromosome.begin(), l1);
+    Chromosome chrInputGate(l1, l2);
+    Chromosome chrMemGate(l2, l3);
+    Chromosome chrOutputGate(l3, chromosome.end());
+
+    m_input.setChromosome(chrInput);
+    m_inputGate.setChromosome(chrInputGate);
+    m_memGate.setChromosome(chrMemGate);
+    m_outputGate.setChromosome(chrOutputGate);
+}
+
+Chromosome MemCell::getChromosome() const
+{
+    Chromosome chromosome;
+
+    Chromosome chrInput = m_input.getChromosome();
+    Chromosome chrInputGate = m_inputGate.getChromosome();
+    Chromosome chrMemGate = m_memGate.getChromosome();
+    Chromosome chrOutputGate = m_outputGate.getChromosome();
+
+    chromosome.insert(chromosome.end(), chrInput.begin(), chrInput.end());
+    chromosome.insert(chromosome.end(), chrInputGate.begin(), chrInputGate.end());
+    chromosome.insert(chromosome.end(), chrMemGate.begin(), chrMemGate.end());
+    chromosome.insert(chromosome.end(), chrOutputGate.begin(), chrOutputGate.end());
+
+    return chromosome;
+}
+
+unsigned MemCell::getChromosomeSize() const
+{
+    unsigned chrSize = 0;
+
+    chrSize += m_input.getChromosomeSize();
+    chrSize += m_inputGate.getChromosomeSize();
+    chrSize += m_memGate.getChromosomeSize();
+    chrSize += m_outputGate.getChromosomeSize();
+
+    return chrSize;
+}
+
+float MemCell::io(const std::vector<float> &inputs)
+{
+    float response = 0.f;
+
+    if (inputs.size() != m_inputCount)
+    {
+        return response;
+    }
+
+    std::vector<float> gateInputs = inputs;
+    gateInputs.push_back(m_context);
+
+    response = m_input.io(inputs) * m_inputGate.io(gateInputs);
+    float memory = m_context * m_memGate.io(gateInputs);
+    m_context = memory + response;
+
+    response = sigmoid(m_context) * m_outputGate.io(gateInputs);
+    return response;
+}
-- 
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