feat: add rate spikegen for snns

Context

There are different methods to convert an input image to a spike train of sequence length num_steps for SNNs.

This MR aims to implement a basic version of rate coding : each input value is used as a probability of spiking.

For instance :

auto spikes = spikegenRate({0,0,0}, 3); 
// spikes = {{0,0,0}, {0,0,0}, {0,0,0}}

auto spikes = spikegenRate({1,1,1, 1}, 1); 
// spikes = {1,1,1,1}

Modifications

• Added a helper Tensor.repeat(n) method to repeat a tensor n times.
• Added a spikegenRate(std::shared_ptr<Tensor> tensor, std::uint32_t numSteps) -> Tensor method. spikegenRate replicates the input tensor for a specified number of steps and then converts its values into binary spikes using a rate-based (probabilistic) approach.

added 1 commit

• dd353248 - Add python binding for spikegen rate function

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requested review from @olivierbichler

assigned to @jeromeh

marked this merge request as ready

added 8 commits

• dd353248...a7ec11eb - 2 commits from branch eclipse/aidge:dev
• 35a73120 - Add a Tensor.repeat() method
• cb327fea - Add unit test for Tensor.repeat()
• 17826146 - First draft of spikegen rate convert function
• bb4d9a3a - Minor changes (doc, functions signatures)
• 6bf56a29 - Add basic test for Spikegen functions
• 3fcfacf8 - Add python binding for spikegen rate function

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added 2 commits

• 494b8351 - Add basic test for Spikegen functions
• 5afad3e3 - Add python binding for spikegen rate function

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What is the status of this MR?

added Feature 🚀 StatusReview Ready TopicTensor labels

added 24 commits

• 5afad3e3...f0e41abc - 18 commits from branch eclipse/aidge:dev
• 7601c33d - Add a Tensor.repeat() method
• b08b2ba5 - Add unit test for Tensor.repeat()
• 19e30749 - First draft of spikegen rate convert function
• 6db290e8 - Minor changes (doc, functions signatures)
• 02061735 - Add basic test for Spikegen functions
• 985fb609 - Add python binding for spikegen rate function

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added 1 commit

• bba4dd14 - Make a local function static

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added 1 commit

• b775a82c - Make a local function static

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changed the description

approved this merge request

mentioned in issue #245

added 9 commits

• b775a82c...76ccc349 - 2 commits from branch eclipse/aidge:dev
• 764504df - Add a Tensor.repeat() method
• 70a0be1f - Add unit test for Tensor.repeat()
• cada2936 - First draft of spikegen rate convert function
• d12e93cd - Minor changes (doc, functions signatures)
• b76754c4 - Add basic test for Spikegen functions
• 7bb39405 - Add python binding for spikegen rate function
• fd3f8a3b - Make a local function static

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resolved all threads

enabled an automatic merge when all merge checks for fd3f8a3b pass