Torch.save error becasue pkl file is not utf encoded

1

I need help , I don’t understand where did I make mistake to get this error from below network.

RuntimeError: Error(s) in loading state_dict for EncoderCNN: While copying the parameter named "embed.bias", whose dimensions in the model are torch.Size([256]) and whose dimensions in the checkpoint are torch.Size([5]). While copying the parameter named "embed.weight", whose dimensions in the model are torch.Size([256, 2048]) and whose dimensions in the checkpoint are torch.Size([5, 2048]).

my model is ;

import torch
import torch.nn as nn
import torchvision.models as models
from torch.autograd import Variable

class EncoderCNN(nn.Module):
    def __init__(self, embed_size):
        super(EncoderCNN, self).__init__()
        resnet = models.resnet50(pretrained=True)
        modules = list(resnet.children())[:-1]
        self.resnet = nn.Sequential(*modules)
        self.embed = nn.Linear(resnet.fc.in_features, embed_size)

    def forward(self, images):
        features = self.resnet(images)
        features = Variable(features.data)
        features = features.view(features.size(0), -1)
        features = self.embed(features)
        return features

class DecoderRNN(nn.Module):
    def __init__(self, embed_size, hidden_size, vocab_size, num_layers=2):
        super(DecoderRNN, self).__init__()
        self.embed = nn.Embedding(vocab_size, embed_size)
        self.lstm = nn.LSTM(embed_size, hidden_size, num_layers, batch_first=True)
        self.dropout = nn.Dropout(0.2)
        self.linear = nn.Linear(hidden_size, vocab_size)

    def forward(self, features, captions):
        captions = captions[:,:-1]
        embeddings = self.embed(captions)
        inputs = torch.cat((features.unsqueeze(1), embeddings), 1)
        hiddens, _ = self.lstm(inputs)
        outputs = self.linear(hiddens)
        return outputs

    def sample(self, inputs, states=None, max_len=20):
        " accepts pre-processed image tensor (inputs) and returns predicted sentence (list of tensor ids of length max_len) "
        sampled_ids = []
        for i in range(max_len):
            hiddens, states = self.lstm(inputs, states)
            outputs = self.linear(hiddens.squeeze(1))
            predicted = outputs.max(1)[1]
            sampled_ids.append(predicted.data[0])
            inputs = self.embed(predicted)
            inputs = inputs.unsqueeze(1)
        return sampled_ids
2

I’m trying to load the weights turns out the file I was trying to get weight from is never have the weights but the content below.

image
image875×156 8 KB

This is how I save weights adding decode(‘utf-8’) didn’t change the result.

    # Save the weights.
    if epoch % save_every == 0:
        torch.save(decoder.state_dict(), os.path.join('./models', 'decoder-%d.pkl' % epoch).decode('utf-8') )
        torch.save(encoder.state_dict(), os.path.join('./models', 'encoder-%d.pkl' % epoch).decode('utf-8') )

# Close the training log file.
f.close()