Add 200k steps ckpt

config.json

@@ -0,0 +1,77 @@
+{
+  "activation_dropout": 0.1,
+  "apply_spec_augment": true,
+  "architectures": [
+    "HubertModel"
+  ],
+  "auto_map": {
+	"FlaxAutoModel": "modeling_flax_hubert.FlaxHubertModel"
+  },
+  "attention_dropout": 0.1,
+  "bos_token_id": 1,
+  "conv_bias": true,
+  "conv_dim": [
+    512,
+    512,
+    512,
+    512,
+    512,
+    512,
+    512
+  ],
+  "conv_kernel": [
+    10,
+    3,
+    3,
+    3,
+    3,
+    2,
+    2
+  ],
+  "conv_stride": [
+    5,
+    2,
+    2,
+    2,
+    2,
+    2,
+    2
+  ],
+  "ctc_loss_reduction": "sum",
+  "ctc_zero_infinity": false,
+  "diversity_loss_weight": 0.1,
+  "do_stable_layer_norm": true,
+  "eos_token_id": 2,
+  "feat_extract_activation": "gelu",
+  "feat_extract_dropout": 0.0,
+  "feat_extract_norm": "layer",
+  "feat_proj_dropout": 0.1,
+  "feat_proj_layer_norm": true,
+  "final_dropout": 0.1,
+  "final_proj_size": 1024,
+  "hidden_act": "gelu",
+  "hidden_dropout": 0.1,
+  "hidden_dropout_prob": 0.1,
+  "hidden_size": 1280,
+  "initializer_range": 0.02,
+  "intermediate_size": 5120,
+  "layer_norm_eps": 1e-05,
+  "layerdrop": 0.1,
+  "mask_feature_length": 10,
+  "mask_feature_min_masks": 0,
+  "mask_feature_prob": 0.0,
+  "mask_time_length": 10,
+  "mask_time_min_masks": 2,
+  "mask_time_prob": 0.075,
+  "model_type": "hubert",
+  "num_attention_heads": 16,
+  "num_conv_pos_embedding_groups": 16,
+  "num_conv_pos_embeddings": 128,
+  "num_feat_extract_layers": 7,
+  "num_hidden_layers": 48,
+  "pad_token_id": 0,
+  "torch_dtype": "float32",
+  "transformers_version": "4.30.0.dev0",
+  "use_weighted_layer_sum": false,
+  "vocab_size": 32
+}

flax_model.msgpack

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3162892b23234514935ba0ca031919e853e67b61a4b64e98fb96a431e09c1f20
+size 3856287483

modeling_flax_hubert.py

@@ -0,0 +1,966 @@
+# coding=utf-8
+# Copyright 2021 The Fairseq Authors and the HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+""" Flax Hubert model."""
+
+from functools import partial
+from typing import Optional, Tuple, Union
+
+import flax
+import flax.linen as nn
+import jax
+import jax.numpy as jnp
+from flax.core.frozen_dict import FrozenDict, freeze, unfreeze
+from flax.linen.attention import dot_product_attention_weights
+from flax.traverse_util import flatten_dict, unflatten_dict
+from jax import lax
+from transformers import HubertConfig
+from transformers.modeling_flax_outputs import FlaxBaseModelOutput
+from transformers.modeling_flax_utils import (
+    ACT2FN,
+    FlaxPreTrainedModel,
+)
+from transformers.utils import ModelOutput, logging
+
+logger = logging.get_logger(__name__)
+
+
+@flax.struct.dataclass
+class FlaxHubertOutput(ModelOutput):
+    last_hidden_state: jnp.ndarray = None
+    hidden_states: Optional[Tuple[jnp.ndarray]] = None
+    attentions: Optional[Tuple[jnp.ndarray]] = None
+    extract_features: jnp.ndarray = None
+
+
+class FlaxConvWithWeightNorm(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.conv = nn.Conv(
+            features=self.config.hidden_size,
+            kernel_size=(self.config.num_conv_pos_embeddings,),
+            kernel_init=jax.nn.initializers.he_normal(),
+            padding="VALID",
+            feature_group_count=self.config.num_conv_pos_embedding_groups,
+            dtype=self.dtype,
+        )
+        weight_shape = (
+            self.conv.features,
+            self.conv.features // self.conv.feature_group_count,
+            self.conv.kernel_size[0],
+        )
+        self.weight_v = self.param(
+            "weight_v", jax.nn.initializers.he_normal(), weight_shape
+        )
+        self.weight_g = self.param(
+            "weight_g",
+            lambda _: jnp.linalg.norm(self.weight_v, axis=(0, 1))[None, None, :],
+        )
+        self.bias = self.param("bias", jax.nn.initializers.zeros, (self.conv.features,))
+        self.prev_padding = self.conv.kernel_size[0] // 2
+
+    def _get_normed_weights(self):
+        weight_v_norm = jnp.linalg.norm(self.weight_v, axis=(0, 1))[None, None, :]
+        normed_weight_v = jnp.divide(self.weight_v, weight_v_norm)
+        normed_kernel = jnp.multiply(normed_weight_v, self.weight_g)
+        return normed_kernel
+
+    def __call__(self, hidden_states):
+        kernel = self._get_normed_weights()
+        hidden_states = jnp.pad(
+            hidden_states, ((0, 0), (self.prev_padding, self.prev_padding), (0, 0))
+        )
+        hidden_states = self.conv.apply(
+            {"params": {"kernel": kernel.T, "bias": self.bias}}, hidden_states
+        )
+        return hidden_states
+
+
+class FlaxHubertNoLayerNormConvLayer(nn.Module):
+    config: HubertConfig
+    layer_id: int = 0
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.in_conv_dim = (
+            self.config.conv_dim[self.layer_id - 1] if self.layer_id > 0 else 1
+        )
+        self.out_conv_dim = self.config.conv_dim[self.layer_id]
+
+        self.conv = nn.Conv(
+            features=self.config.conv_dim[self.layer_id],
+            kernel_size=(self.config.conv_kernel[self.layer_id],),
+            strides=(self.config.conv_stride[self.layer_id],),
+            use_bias=self.config.conv_bias,
+            kernel_init=jax.nn.initializers.he_normal(),
+            padding="VALID",
+            dtype=self.dtype,
+        )
+        self.activation = ACT2FN[self.config.feat_extract_activation]
+
+    def __call__(self, hidden_states):
+        hidden_states = self.conv(hidden_states)
+        hidden_states = self.activation(hidden_states)
+        return hidden_states
+
+
+class FlaxHubertLayerNormConvLayer(nn.Module):
+    config: HubertConfig
+    layer_id: int = 0
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.in_conv_dim = (
+            self.config.conv_dim[self.layer_id - 1] if self.layer_id > 0 else 1
+        )
+        self.out_conv_dim = self.config.conv_dim[self.layer_id]
+
+        self.conv = nn.Conv(
+            features=self.config.conv_dim[self.layer_id],
+            kernel_size=(self.config.conv_kernel[self.layer_id],),
+            strides=(self.config.conv_stride[self.layer_id],),
+            use_bias=self.config.conv_bias,
+            kernel_init=jax.nn.initializers.he_normal(),
+            padding="VALID",
+            dtype=self.dtype,
+        )
+        self.layer_norm = nn.LayerNorm(
+            epsilon=self.config.layer_norm_eps, dtype=self.dtype
+        )
+        self.activation = ACT2FN[self.config.feat_extract_activation]
+
+    def __call__(self, hidden_states):
+        hidden_states = self.conv(hidden_states)
+        hidden_states = self.layer_norm(hidden_states)
+        hidden_states = self.activation(hidden_states)
+        return hidden_states
+
+
+class FlaxHubertGroupNormConvLayer(nn.Module):
+    config: HubertConfig
+    layer_id: int = 0
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.in_conv_dim = (
+            self.config.conv_dim[self.layer_id - 1] if self.layer_id > 0 else 1
+        )
+        self.out_conv_dim = self.config.conv_dim[self.layer_id]
+
+        self.conv = nn.Conv(
+            features=self.config.conv_dim[self.layer_id],
+            kernel_size=(self.config.conv_kernel[self.layer_id],),
+            strides=(self.config.conv_stride[self.layer_id],),
+            use_bias=self.config.conv_bias,
+            kernel_init=jax.nn.initializers.he_normal(),
+            padding="VALID",
+            dtype=self.dtype,
+        )
+        self.activation = ACT2FN[self.config.feat_extract_activation]
+
+        self.layer_norm = nn.GroupNorm(num_groups=self.out_conv_dim, dtype=self.dtype)
+
+    def __call__(self, hidden_states):
+        hidden_states = self.conv(hidden_states)
+        hidden_states = self.layer_norm(hidden_states)
+        hidden_states = self.activation(hidden_states)
+        return hidden_states
+
+
+class FlaxHubertPositionalConvEmbedding(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.conv = FlaxConvWithWeightNorm(self.config, dtype=self.dtype)
+        self.activation = ACT2FN[self.config.feat_extract_activation]
+        self.num_pad_remove = 1 if self.config.num_conv_pos_embeddings % 2 == 0 else 0
+
+    def __call__(self, hidden_states):
+        hidden_states = hidden_states.transpose((0, 1, 2))
+
+        hidden_states = self.conv(hidden_states)
+
+        if self.num_pad_remove > 0:
+            hidden_states = hidden_states[:, : -self.num_pad_remove, :]
+        hidden_states = self.activation(hidden_states)
+
+        hidden_states = hidden_states.transpose((0, 1, 2))
+        return hidden_states
+
+
+class FlaxConvLayersCollection(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        if self.config.feat_extract_norm == "layer":
+            self.layers = [
+                FlaxHubertLayerNormConvLayer(
+                    self.config, layer_id=i, name=str(i), dtype=self.dtype
+                )
+                for i in range(self.config.num_feat_extract_layers)
+            ]
+        elif self.config.feat_extract_norm == "group":
+            self.layers = [
+                FlaxHubertGroupNormConvLayer(
+                    self.config, layer_id=0, name=str(0), dtype=self.dtype
+                )
+            ] + [
+                FlaxHubertNoLayerNormConvLayer(
+                    self.config, layer_id=i, name=str(i), dtype=self.dtype
+                )
+                for i in range(1, self.config.num_feat_extract_layers)
+            ]
+        else:
+            raise ValueError(
+                f"`config.feat_extract_norm` is {self.config.feat_extract_norm}, but has to be one of ['group',"
+                " 'layer']"
+            )
+
+    def __call__(self, hidden_states):
+        for i, conv_layer in enumerate(self.layers):
+            hidden_states = conv_layer(hidden_states)
+        return hidden_states
+
+
+class FlaxHubertFeatureEncoder(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.conv_layers = FlaxConvLayersCollection(self.config, dtype=self.dtype)
+
+    def __call__(self, input_values, freeze_feature_encoder=False):
+        hidden_states = input_values[:, :, None]
+        hidden_states = self.conv_layers(hidden_states)
+        if freeze_feature_encoder:
+            hidden_states = jax.lax.stop_gradient(hidden_states)
+        return hidden_states
+
+
+class FlaxHubertFeatureProjection(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.feat_proj_layer_norm = self.config.feat_proj_layer_norm
+        if self.feat_proj_layer_norm:
+            self.layer_norm = nn.LayerNorm(
+                epsilon=self.config.layer_norm_eps, dtype=self.dtype
+            )
+        self.projection = nn.Dense(
+            self.config.hidden_size,
+            kernel_init=jax.nn.initializers.normal(self.config.initializer_range),
+            dtype=self.dtype,
+        )
+        self.dropout = nn.Dropout(rate=self.config.feat_proj_dropout)
+
+    def __call__(self, hidden_states, deterministic=True):
+        if self.feat_proj_layer_norm:
+            hidden_states = self.layer_norm(hidden_states)
+        hidden_states = self.projection(hidden_states)
+        hidden_states = self.dropout(hidden_states, deterministic=deterministic)
+        return hidden_states
+
+
+class FlaxHubertAttention(nn.Module):
+    config: HubertConfig
+    embed_dim: int
+    num_heads: int
+    dropout: float = 0.0
+    bias: bool = True
+    dtype: jnp.dtype = jnp.float32  # the dtype of the computation
+
+    def setup(self) -> None:
+        self.head_dim = self.embed_dim // self.num_heads
+        if self.head_dim * self.num_heads != self.embed_dim:
+            raise ValueError(
+                f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim}"
+                f" and `num_heads`: {self.num_heads})."
+            )
+        self.scaling = self.head_dim**-0.5
+
+        dense = partial(
+            nn.Dense,
+            self.embed_dim,
+            use_bias=self.bias,
+            dtype=self.dtype,
+            kernel_init=jax.nn.initializers.normal(self.config.initializer_range),
+        )
+
+        self.q_proj, self.k_proj, self.v_proj = dense(), dense(), dense()
+        self.out_proj = dense()
+
+        self.dropout_layer = nn.Dropout(rate=self.dropout)
+
+    def _split_heads(self, hidden_states):
+        return hidden_states.reshape(
+            hidden_states.shape[:2] + (self.num_heads, self.head_dim)
+        )
+
+    def _merge_heads(self, hidden_states):
+        return hidden_states.reshape(hidden_states.shape[:2] + (self.embed_dim,))
+
+    def __call__(
+        self,
+        hidden_states: jnp.ndarray,
+        attention_mask: Optional[jnp.ndarray] = None,
+        output_attentions: bool = False,
+        deterministic: bool = True,
+    ) -> Tuple[jnp.ndarray, Optional[jnp.ndarray]]:
+        """Input shape: Batch x Time x Channel"""
+
+        # get query, key, value proj for self_attention
+        query_states = self.q_proj(hidden_states)
+        key_states = self.k_proj(hidden_states)
+        value_states = self.v_proj(hidden_states)
+
+        query_states = self._split_heads(query_states)
+        key_states = self._split_heads(key_states)
+        value_states = self._split_heads(value_states)
+
+        if attention_mask is not None:
+            attention_mask = jnp.expand_dims(attention_mask, axis=(-3, -2))
+            attention_bias = lax.select(
+                attention_mask > 0,
+                jnp.full(attention_mask.shape, 0.0).astype(self.dtype),
+                jnp.full(attention_mask.shape, jnp.finfo(self.dtype).min).astype(
+                    self.dtype
+                ),
+            )
+        else:
+            attention_bias = None
+
+        dropout_rng = None
+        if not deterministic and self.dropout > 0.0:
+            dropout_rng = self.make_rng("dropout")
+
+        attn_weights = dot_product_attention_weights(
+            query_states,
+            key_states,
+            bias=attention_bias,
+            dropout_rng=dropout_rng,
+            dropout_rate=self.dropout,
+            broadcast_dropout=True,
+            deterministic=deterministic,
+            dtype=self.dtype,
+            precision=None,
+        )
+
+        attn_output = jnp.einsum("...hqk,...khd->...qhd", attn_weights, value_states)
+        attn_output = self._merge_heads(attn_output)
+        attn_output = self.out_proj(attn_output)
+
+        return attn_output, attn_weights
+
+
+class FlaxHubertFeedForward(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.intermediate_dropout = nn.Dropout(self.config.activation_dropout)
+
+        self.intermediate_dense = nn.Dense(
+            self.config.intermediate_size, dtype=self.dtype
+        )
+        if isinstance(self.config.hidden_act, str):
+            self.intermediate_activation = ACT2FN[self.config.hidden_act]
+        else:
+            self.intermediate_activation = self.config.hidden_act
+
+        self.output_dense = nn.Dense(self.config.hidden_size, dtype=self.dtype)
+        self.output_dropout = nn.Dropout(self.config.activation_dropout)
+
+    def __call__(self, hidden_states, deterministic=True):
+        hidden_states = self.intermediate_dense(hidden_states)
+        hidden_states = self.intermediate_activation(hidden_states)
+        hidden_states = self.intermediate_dropout(
+            hidden_states, deterministic=deterministic
+        )
+
+        hidden_states = self.output_dense(hidden_states)
+        hidden_states = self.output_dropout(hidden_states, deterministic=deterministic)
+
+        return hidden_states
+
+
+class FlaxHubertEncoderLayer(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.attention = FlaxHubertAttention(
+            config=self.config,
+            embed_dim=self.config.hidden_size,
+            num_heads=self.config.num_attention_heads,
+            dropout=self.config.attention_dropout,
+            dtype=self.dtype,
+        )
+        self.dropout = nn.Dropout(self.config.hidden_dropout)
+        self.layer_norm = nn.LayerNorm(
+            epsilon=self.config.layer_norm_eps, dtype=self.dtype
+        )
+        self.feed_forward = FlaxHubertFeedForward(self.config, dtype=self.dtype)
+        self.final_layer_norm = nn.LayerNorm(
+            epsilon=self.config.layer_norm_eps, dtype=self.dtype
+        )
+
+    def __call__(
+        self,
+        hidden_states,
+        attention_mask: Optional[jnp.ndarray] = None,
+        output_attentions: bool = False,
+        deterministic=True,
+    ):
+        attn_residual = hidden_states
+        hidden_states, attn_weights = self.attention(
+            hidden_states=hidden_states,
+            attention_mask=attention_mask,
+            output_attentions=output_attentions,
+            deterministic=deterministic,
+        )
+
+        hidden_states = self.dropout(hidden_states, deterministic=deterministic)
+        hidden_states = attn_residual + hidden_states
+
+        hidden_states = self.layer_norm(hidden_states)
+        hidden_states = hidden_states + self.feed_forward(
+            hidden_states, deterministic=deterministic
+        )
+        hidden_states = self.final_layer_norm(hidden_states)
+
+        outputs = (hidden_states,)
+
+        if output_attentions:
+            outputs += (attn_weights,)
+
+        return outputs
+
+
+class FlaxHubertEncoderLayerStableLayerNorm(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.attention = FlaxHubertAttention(
+            config=self.config,
+            embed_dim=self.config.hidden_size,
+            num_heads=self.config.num_attention_heads,
+            dropout=self.config.attention_dropout,
+            dtype=self.dtype,
+        )
+        self.dropout = nn.Dropout(self.config.hidden_dropout)
+        self.layer_norm = nn.LayerNorm(
+            epsilon=self.config.layer_norm_eps, dtype=self.dtype
+        )
+        self.feed_forward = FlaxHubertFeedForward(self.config, dtype=self.dtype)
+        self.final_layer_norm = nn.LayerNorm(
+            epsilon=self.config.layer_norm_eps, dtype=self.dtype
+        )
+
+    def __call__(
+        self,
+        hidden_states,
+        attention_mask: Optional[jnp.ndarray] = None,
+        output_attentions: bool = False,
+        deterministic=True,
+    ):
+        attn_residual = hidden_states
+        hidden_states = self.layer_norm(hidden_states)
+        hidden_states, attn_weights = self.attention(
+            hidden_states=hidden_states,
+            attention_mask=attention_mask,
+            output_attentions=output_attentions,
+            deterministic=deterministic,
+        )
+
+        hidden_states = self.dropout(hidden_states, deterministic=deterministic)
+        hidden_states = attn_residual + hidden_states
+
+        hidden_states = hidden_states + self.feed_forward(
+            self.final_layer_norm(hidden_states), deterministic=deterministic
+        )
+
+        outputs = (hidden_states,)
+
+        if output_attentions:
+            outputs += (attn_weights,)
+
+        return outputs
+
+
+class FlaxHubertLayerCollection(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.layers = [
+            FlaxHubertEncoderLayer(self.config, name=str(i), dtype=self.dtype)
+            for i in range(self.config.num_hidden_layers)
+        ]
+
+    def __call__(
+        self,
+        hidden_states,
+        attention_mask=None,
+        deterministic: bool = True,
+        output_attentions: bool = False,
+        output_hidden_states: bool = False,
+        return_dict: bool = True,
+    ):
+        all_attentions = () if output_attentions else None
+        all_hidden_states = () if output_hidden_states else None
+
+        for i, layer in enumerate(self.layers):
+            if output_hidden_states:
+                all_hidden_states += (hidden_states,)
+
+            layer_outputs = layer(
+                hidden_states,
+                attention_mask,
+                deterministic=deterministic,
+                output_attentions=output_attentions,
+            )
+
+            hidden_states = layer_outputs[0]
+
+            if output_attentions:
+                all_attentions += (layer_outputs[1],)
+
+        if output_hidden_states:
+            all_hidden_states += (hidden_states,)
+
+        outputs = (hidden_states, all_hidden_states, all_attentions)
+
+        if not return_dict:
+            return tuple(v for v in outputs if v is not None)
+
+        return FlaxBaseModelOutput(
+            last_hidden_state=hidden_states,
+            hidden_states=all_hidden_states,
+            attentions=all_attentions,
+        )
+
+
+class FlaxHubertEncoder(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.pos_conv_embed = FlaxHubertPositionalConvEmbedding(
+            self.config, dtype=self.dtype
+        )
+        self.layer_norm = nn.LayerNorm(
+            epsilon=self.config.layer_norm_eps, dtype=self.dtype
+        )
+        self.dropout = nn.Dropout(rate=self.config.hidden_dropout)
+        self.layers = FlaxHubertLayerCollection(self.config, dtype=self.dtype)
+
+    def __call__(
+        self,
+        hidden_states,
+        attention_mask: Optional[jnp.ndarray] = None,
+        output_attentions: bool = False,
+        output_hidden_states: bool = False,
+        return_dict: bool = True,
+        deterministic: bool = True,
+    ):
+        if attention_mask is not None:
+            # make sure padded tokens are not attended to
+            hidden_states = jnp.where(
+                jnp.broadcast_to(attention_mask[:, :, None], hidden_states.shape),
+                hidden_states,
+                0,
+            )
+
+        position_embeddings = self.pos_conv_embed(hidden_states)
+
+        hidden_states = hidden_states + position_embeddings
+        hidden_states = self.dropout(hidden_states, deterministic=deterministic)
+
+        outputs = self.layers(
+            hidden_states,
+            attention_mask,
+            deterministic=deterministic,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+
+        last_hidden_state = self.layer_norm(outputs[0])
+
+        hidden_states = None
+        if output_hidden_states:
+            hidden_states = outputs[1]
+            hidden_states = hidden_states[:-1] + (last_hidden_state,)
+
+        if not return_dict:
+            outputs = (last_hidden_state, hidden_states) + (
+                outputs[2:] if output_hidden_states else outputs[1:]
+            )
+            return tuple(v for v in outputs if v is not None)
+
+        return FlaxBaseModelOutput(
+            last_hidden_state=last_hidden_state,
+            hidden_states=hidden_states,
+            attentions=outputs.attentions,
+        )
+
+
+class FlaxHubertLayerStableLayerNormCollection(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.layers = [
+            FlaxHubertEncoderLayerStableLayerNorm(
+                self.config, name=str(i), dtype=self.dtype
+            )
+            for i in range(self.config.num_hidden_layers)
+        ]
+
+    def __call__(
+        self,
+        hidden_states,
+        attention_mask=None,
+        deterministic: bool = True,
+        output_attentions: bool = False,
+        output_hidden_states: bool = False,
+        return_dict: bool = True,
+    ):
+        all_attentions = () if output_attentions else None
+        all_hidden_states = () if output_hidden_states else None
+
+        for i, layer in enumerate(self.layers):
+            if output_hidden_states:
+                all_hidden_states += (hidden_states,)
+
+            layer_outputs = layer(
+                hidden_states,
+                attention_mask,
+                deterministic=deterministic,
+                output_attentions=output_attentions,
+            )
+
+            hidden_states = layer_outputs[0]
+
+            if output_attentions:
+                all_attentions += (layer_outputs[1],)
+
+        if output_hidden_states:
+            all_hidden_states += (hidden_states,)
+
+        outputs = (hidden_states, all_hidden_states, all_attentions)
+
+        if not return_dict:
+            return tuple(v for v in outputs if v is not None)
+
+        return FlaxBaseModelOutput(
+            last_hidden_state=hidden_states,
+            hidden_states=all_hidden_states,
+            attentions=all_attentions,
+        )
+
+
+class FlaxHubertEncoderStableLayerNorm(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.pos_conv_embed = FlaxHubertPositionalConvEmbedding(
+            self.config, dtype=self.dtype
+        )
+        self.layer_norm = nn.LayerNorm(
+            epsilon=self.config.layer_norm_eps, dtype=self.dtype
+        )
+        self.dropout = nn.Dropout(rate=self.config.hidden_dropout)
+        self.layers = FlaxHubertLayerStableLayerNormCollection(
+            self.config, dtype=self.dtype
+        )
+
+    def __call__(
+        self,
+        hidden_states,
+        attention_mask: Optional[jnp.ndarray] = None,
+        output_attentions: bool = False,
+        output_hidden_states: bool = False,
+        return_dict: bool = True,
+        deterministic: bool = True,
+    ):
+        if attention_mask is not None:
+            hidden_states = jnp.where(
+                jnp.broadcast_to(attention_mask[:, :, None], hidden_states.shape),
+                hidden_states,
+                0,
+            )
+
+        position_embeddings = self.pos_conv_embed(hidden_states)
+
+        hidden_states = hidden_states + position_embeddings
+        hidden_states = self.dropout(hidden_states, deterministic=deterministic)
+
+        outputs = self.layers(
+            hidden_states,
+            attention_mask,
+            deterministic=deterministic,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+
+        last_hidden_state = self.layer_norm(outputs[0])
+
+        hidden_states = None
+        if output_hidden_states:
+            hidden_states = outputs[1]
+            hidden_states = hidden_states[:-1] + (last_hidden_state,)
+
+        if not return_dict:
+            outputs = (last_hidden_state, hidden_states) + (
+                outputs[2:] if output_hidden_states else outputs[1:]
+            )
+            return tuple(v for v in outputs if v is not None)
+
+        return FlaxBaseModelOutput(
+            last_hidden_state=last_hidden_state,
+            hidden_states=hidden_states,
+            attentions=outputs.attentions,
+        )
+
+
+class FlaxHubertPreTrainedModel(FlaxPreTrainedModel):
+    config_class = HubertConfig
+    base_model_prefix = "hubert"
+    main_input_name = "input_values"
+    module_class: nn.Module = None
+    _keys_to_ignore_on_load_missing = [r"position_ids"]
+
+    def __init__(
+        self,
+        config: HubertConfig,
+        input_shape: Tuple = (1, 1024),
+        seed: int = 0,
+        dtype: jnp.dtype = jnp.float32,
+        _do_init: bool = True,
+        **kwargs,
+    ):
+        module = self.module_class(config=config, dtype=dtype, **kwargs)
+        super().__init__(
+            config,
+            module,
+            input_shape=input_shape,
+            seed=seed,
+            dtype=dtype,
+            _do_init=_do_init,
+        )
+
+    def init_weights(
+        self, rng: jax.random.PRNGKey, input_shape: Tuple, params: FrozenDict = None
+    ) -> FrozenDict:
+        input_values = jnp.zeros(input_shape, dtype="i4")
+        attention_mask = jnp.ones_like(input_values)
+        params_rng, dropout_rng = jax.random.split(rng, 2)
+        rngs = {"params": params_rng, "dropout": dropout_rng}
+
+        random_params = self.module.init(
+            rngs, input_values, attention_mask, return_dict=False
+        )["params"]
+
+        if params is not None:
+            random_params = flatten_dict(unfreeze(random_params))
+            params = flatten_dict(unfreeze(params))
+            for missing_key in self._missing_keys:
+                params[missing_key] = random_params[missing_key]
+            self._missing_keys = set()
+            return freeze(unflatten_dict(params))
+        else:
+            return random_params
+
+    def __call__(
+        self,
+        input_values,
+        attention_mask=None,
+        mask_time_indices=None,
+        params: dict = None,
+        dropout_rng: jax.random.PRNGKey = None,
+        train: bool = False,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        freeze_feature_encoder: bool = False,
+        return_dict: Optional[bool] = None,
+    ):
+        output_attentions = (
+            output_attentions
+            if output_attentions is not None
+            else self.config.output_attentions
+        )
+        output_hidden_states = (
+            output_hidden_states
+            if output_hidden_states is not None
+            else self.config.output_hidden_states
+        )
+        return_dict = (
+            return_dict if return_dict is not None else self.config.return_dict
+        )
+
+        batch_size, sequence_length = input_values.shape
+
+        if attention_mask is None:
+            attention_mask = jnp.ones((batch_size, sequence_length))
+
+        rngs = {}
+        if dropout_rng is not None:
+            rngs["dropout"] = dropout_rng
+
+        inputs = {"params": params or self.params}
+
+        return self.module.apply(
+            inputs,
+            jnp.array(input_values, dtype="f4"),
+            jnp.array(attention_mask, dtype="i4"),
+            mask_time_indices,
+            not train,
+            output_attentions,
+            output_hidden_states,
+            freeze_feature_encoder,
+            return_dict,
+            rngs=rngs,
+        )
+
+
+class FlaxHubertModule(nn.Module):
+    config: HubertConfig
+    dtype: jnp.dtype = jnp.float32
+
+    def setup(self):
+        self.feature_extractor = FlaxHubertFeatureEncoder(self.config, dtype=self.dtype)
+        self.feature_projection = FlaxHubertFeatureProjection(
+            self.config, dtype=self.dtype
+        )
+
+        if self.config.mask_time_prob > 0.0 or self.config.mask_feature_prob > 0.0:
+            self.masked_spec_embed = self.param(
+                "masked_spec_embed",
+                nn.initializers.uniform(dtype=self.dtype),
+                (self.config.hidden_size,),
+            )
+
+        if self.config.do_stable_layer_norm:
+            self.encoder = FlaxHubertEncoderStableLayerNorm(self.config)
+        else:
+            self.encoder = FlaxHubertEncoder(self.config)
+
+    def __call__(
+        self,
+        input_values: Optional[jnp.ndarray],
+        attention_mask: Optional[jnp.ndarray] = None,
+        mask_time_indices: Optional[jnp.ndarray] = None,
+        deterministic: bool = True,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        freeze_feature_encoder: bool = False,
+        return_dict: Optional[bool] = None,
+    ) -> Union[Tuple, FlaxHubertOutput]:
+        output_attentions = (
+            output_attentions
+            if output_attentions is not None
+            else self.config.output_attentions
+        )
+        output_hidden_states = (
+            output_hidden_states
+            if output_hidden_states is not None
+            else self.config.output_hidden_states
+        )
+        return_dict = (
+            return_dict if return_dict is not None else self.config.use_return_dict
+        )
+
+        extract_features = self.feature_extractor(input_values, freeze_feature_encoder)
+
+        if attention_mask is not None:
+            attention_mask = self._get_feature_vector_attention_mask(
+                extract_features.shape[1], attention_mask
+            )
+
+        hidden_states = self.feature_projection(
+            extract_features, deterministic=deterministic
+        )
+        if mask_time_indices is not None:
+            hidden_states = jnp.where(
+                jnp.broadcast_to(mask_time_indices[:, :, None], hidden_states.shape),
+                jnp.broadcast_to(
+                    self.masked_spec_embed[None, None, :], hidden_states.shape
+                ),
+                hidden_states,
+            )
+
+        encoder_outputs = self.encoder(
+            hidden_states,
+            attention_mask=attention_mask,
+            deterministic=deterministic,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+
+        hidden_states = encoder_outputs[0]
+
+        if not return_dict:
+            return (hidden_states,) + encoder_outputs[1:]
+
+        return FlaxHubertOutput(
+            last_hidden_state=hidden_states,
+            hidden_states=encoder_outputs.hidden_states,
+            attentions=encoder_outputs.attentions,
+            extract_features=extract_features,
+        )
+
+    def _get_feat_extract_output_lengths(self, input_lengths: Union[jnp.ndarray, int]):
+        def _conv_out_length(input_length, kernel_size, stride):
+            return (input_length - kernel_size) // stride + 1
+
+        for kernel_size, stride in zip(
+            self.config.conv_kernel, self.config.conv_stride
+        ):
+            input_lengths = _conv_out_length(input_lengths, kernel_size, stride)
+
+        return input_lengths
+
+    def _get_feature_vector_attention_mask(
+        self, feature_vector_length: int, attention_mask: jnp.ndarray
+    ):
+        non_padded_lengths = attention_mask.cumsum(axis=-1)[:, -1]
+
+        output_lengths = self._get_feat_extract_output_lengths(non_padded_lengths)
+
+        batch_size = attention_mask.shape[0]
+
+        attention_mask = jnp.zeros(
+            (batch_size, feature_vector_length), dtype=attention_mask.dtype
+        )
+        attention_mask = attention_mask.at[
+            jnp.arange(attention_mask.shape[0]), output_lengths - 1
+        ].set(1)
+        attention_mask = jnp.flip(jnp.flip(attention_mask, -1).cumsum(-1), -1).astype(
+            "bool"
+        )
+        return attention_mask
+
+
+class FlaxHubertModel(FlaxHubertPreTrainedModel):
+    module_class = FlaxHubertModule

preprocessor_config.json

@@ -0,0 +1,9 @@
+{
+  "do_normalize": false,
+  "feature_extractor_type": "Wav2Vec2FeatureExtractor",
+  "feature_size": 1,
+  "padding_side": "right",
+  "padding_value": 0,
+  "return_attention_mask": false,
+  "sampling_rate": 16000
+}