Struct BiLstm 

pub struct BiLstm {
    pub forward: Lstm,
    pub reverse: Lstm,
    pub d_hidden: usize,
    pub batch_first: bool,
}

The BiLstm module. This implementation is for Bidirectional LSTM.

Introduced in the paper: Framewise phoneme classification with bidirectional LSTM and other neural network architectures.

Should be created with BiLstmConfig.

Fields

forward: Lstm

LSTM for the forward direction.

reverse: Lstm

LSTM for the reverse direction.

d_hidden: usize

The size of the hidden state.

batch_first: bool

If true, input is [batch_size, seq_length, input_size]. If false, input is [seq_length, batch_size, input_size].

Implementations

impl BiLstm

pub fn forward( &self, batched_input: Tensor<3>, state: Option<LstmState<3>>, ) -> (Tensor<3>, LstmState<3>)

Applies the forward pass on the input tensor. This Bidirectional LSTM implementation returns the state for each element in a sequence (i.e., across seq_length) and a final state.

Parameters:

• batched_input: The input tensor of shape:
  • [batch_size, sequence_length, input_size] if batch_first is true (default)
  • [sequence_length, batch_size, input_size] if batch_first is false
• state: An optional LstmState representing the initial cell state and hidden state. Each state tensor has shape [2, batch_size, hidden_size]. If no initial state is provided, these tensors are initialized to zeros.

Returns:

• output: A tensor represents the output features of LSTM. Shape:
  • [batch_size, sequence_length, hidden_size * 2] if batch_first is true
  • [sequence_length, batch_size, hidden_size * 2] if batch_first is false
• state: A LstmState represents the final forward and reverse states. Both state.cell and state.hidden have the shape [2, batch_size, hidden_size].

Trait Implementations

impl Clone for BiLstm

fn clone(&self) -> BiLstm

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BiLstm

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for BiLstm

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Module for BiLstm

fn num_params(&self) -> usize

Get the number of parameters the module has, including all of its sub-modules, without initializing the ones not initialized yet.

fn visit<Visitor>(&self, visitor: &mut Visitor)

where Visitor: ModuleVisitor,

Visit each parameter and module-owned control value with a visitor.

fn map<Mapper>(self, mapper: &mut Mapper) -> BiLstm

where Mapper: ModuleMapper,

Map each parameter and module-owned control value with a mapper.

fn collect_devices(&self, devices: Vec<Device>) -> Vec<Device>

Return all the devices found in the underneath module tree added to the given vector without duplicates.

fn to_device(self, device: &Device) -> BiLstm

Move the module and all of its sub-modules to the given device.

fn fork(self, device: &Device) -> BiLstm

Fork the module and all of its sub-modules to the given device.

fn valid(&self) -> BiLstm

Returns a validation snapshot without autodiff or active training flags.

fn train(self) -> BiLstm

Enables autodiff and restores configured training state throughout the module.

fn materialize(self) -> BiLstm

Fold parameter reparameterizations into their effective values and remove them.

fn devices(&self) -> Vec<Device>

Return all the devices found in the underneath module tree without duplicates.

fn set_require_grad(self, require_grad: bool) -> Self

Set whether every floating-point tensor parameter in the module tree requires gradients.

fn set_require_grad_group(self, group: ParamGroup, require_grad: bool) -> Self

Set whether matched floating-point tensor parameters require gradients.

fn no_grad(self) -> Self

Disable gradients for every floating-point tensor parameter in the module tree.

fn freeze(self) -> Self

Freeze the whole module tree.

fn unfreeze(self) -> Self

Unfreeze the whole module tree.

fn freeze_group(self, group: ParamGroup) -> Self

Freeze every module-owned value in the given group, leaving the rest of the module untouched.

fn unfreeze_group(self, group: ParamGroup) -> Self

Unfreeze every module-owned value in the given group, leaving the rest of the module untouched.

fn quantize_weights(self, quantizer: &mut Quantizer) -> Self

Quantize the weights of the module.

fn quantize_weights_group( self, quantizer: &mut Quantizer, group: ParamGroup, ) -> Self

Quantize the weights of the given parameter group.

fn apply_reparameterization<R>(self, reparameterizer: R) -> Self

where Self: Sized, R: Reparameterizer,

Attach reparameterizations using the given Reparameterizer.

fn apply_lora(self, lora: Lora) -> Self

where Self: Sized,

Attach LoRA adapters to the module’s 2-D weights, freezing all base tensor parameters.

fn apply_qlora(self, qlora: QLora) -> Self

where Self: Sized,

Apply QLoRA to the module: quantize the (frozen) base tensor parameters and attach trainable LoRA adapters to 2-D weights.

fn into_record(self) -> ModuleRecord

where Self: Sized,

Collect this module’s tensor parameters into a ModuleRecord.

fn into_record_group(self, group: ParamGroup) -> ModuleRecord

where Self: Sized,

Collect the tensor parameters group names into a ModuleRecord.

fn try_load_record(self, record: ModuleRecord) -> Result<Self, RecordError>

where Self: Sized,

Apply a ModuleRecord to this module, returning the loaded module.

fn load_record(self, record: ModuleRecord) -> Self

where Self: Sized,

Apply a ModuleRecord to this module, consuming and returning it.

fn save_file<P>(self, path: P) -> Result<(), RecordError>

where P: AsRef<Path>, Self: Sized,

Save this module’s parameters to a burnpack file on disk.

fn load_file<P>(self, path: P) -> Self

where P: AsRef<Path>, Self: Sized,

Load this module’s parameters from a burnpack file on disk, returning the loaded module.

fn try_load_file<P>(self, path: P) -> Result<Self, RecordError>

where P: AsRef<Path>, Self: Sized,

Fallible variant of load_file.

impl ModuleDisplay for BiLstm

fn custom_settings(&self) -> Option<DisplaySettings>

Custom display settings for the module.

fn custom_content(&self, content: Content) -> Option<Content>

Custom attributes for the module.

fn format(&self, passed_settings: DisplaySettings) -> String

Formats the module with provided display settings.

impl ModuleDisplayDefault for BiLstm

fn content(&self, content: Content) -> Option<Content>

Attributes of the module used for display purposes.

fn num_params(&self) -> usize

Gets the number of the parameters of the module.