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[Bert] Feature: Custom Model Outputs #31
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laggui
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tracel-ai:main
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bkonkle:feature/22-custom-bert-model-outputs
May 8, 2024
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Original file line number | Diff line number | Diff line change |
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@@ -5,3 +5,4 @@ pub mod data; | |
mod embedding; | ||
pub mod loader; | ||
pub mod model; | ||
pub mod pooler; |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,41 @@ | ||
use burn::{ | ||
config::Config, | ||
module::Module, | ||
nn::{Linear, LinearConfig}, | ||
tensor::{backend::Backend, Tensor}, | ||
}; | ||
use derive_new::new; | ||
|
||
/// Pooler | ||
#[derive(Module, Debug, new)] | ||
pub struct Pooler<B: Backend> { | ||
/// Linear output | ||
output: Linear<B>, | ||
} | ||
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impl<B: Backend> Pooler<B> { | ||
/// Forward pass | ||
pub fn forward(&self, encoder_output: Tensor<B, 3>) -> Tensor<B, 3> { | ||
let [batch_size, _, _] = encoder_output.dims(); | ||
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self.output | ||
.forward(encoder_output.slice([0..batch_size, 0..1])) | ||
.tanh() | ||
} | ||
} | ||
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/// Pooler Configuration | ||
#[derive(Config)] | ||
pub struct PoolerConfig { | ||
/// Hidden size | ||
pub hidden_size: usize, | ||
} | ||
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impl PoolerConfig { | ||
/// Initialize a new Pooler module. | ||
pub fn init<B: Backend>(&self, device: &B::Device) -> Pooler<B> { | ||
let output = LinearConfig::new(self.hidden_size, self.hidden_size).init(device); | ||
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Pooler::new(output) | ||
} | ||
} |
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Any particular reason why this is now public?
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This is specifically so that I can use it here, in the batcher for my text classification pipeline (and later for the token classification pipeline): https://github.com/bkonkle/burn-transformers/blob/0.1.0/src/pipelines/text_classification/batcher.rs#L72