SimCLR | PyTorch implementation of SimCLR : A Simple Framework | Machine Learning library
kandi X-RAY | SimCLR Summary
kandi X-RAY | SimCLR Summary
SimCLR is a "simple framework for contrastive learning of visual representations". The contrastive prediction task is defined on pairs of augmented examples, resulting in 2N examples per minibatch. Two augmented versions of an image are considered as a correlated, "positive" pair (x_i and x_j). The remaining 2(N - 1) augmented examples are considered negative examples. The contrastive prediction task aims to identify x_j in the set of negative examples for a given x_i.
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Top functions reviewed by kandi - BETA
- Patch the replication callback
- Execute the replication callbacks
- Create a slave pipe
- Internal helper for _data_parallel
- Forward computation
- Get the result from the queue
- Run the given message in the queue
- Persist the result
- Train the model
- Gradient of gradients
- Performs the training step
- Compute the loss function
- Performs the data partition on the given list of intermediates
- Compute the mean and bias for a batch norm
- Performs a single step
- Wrapper for inference
- Save the state of the checkpoint
- Get a ResNet version from the given name
- Load the optimizer
- Create data loader from arrays
- Run the build
- Test function
- Load yaml config file
- Convert a PyTorch model into a module
- Resets the parameters
SimCLR Key Features
SimCLR Examples and Code Snippets
Community Discussions
Trending Discussions on SimCLR
QUESTION
Recently I was going through the paper : "Intriguing Properties of Contrastive Losses"(https://arxiv.org/abs/2011.02803). In the paper(section 3.2) the authors try to determine how well the SimCLR framework has allowed the ResNet50 Model to learn good quality/generalised features that exhibit hierarchical properties. To achieve this, they make use of K-means on intermediate features of the ResNet50 model (intermediate means o/p of block 2,3,4..) & quote the reason -> "If the model learns good representations then regions of similar objects should be grouped together".
Final Results : KMeans feature visualisation
I am trying to replicate the same procedure but with a different model (like VggNet, Xception), are there any resources explaining how to perform such visualisations ?
...ANSWER
Answered 2021-Oct-19 at 14:42The procedure would be as follow:
Let us assume that you want to visualize the 8th layer from VGG. This layer's output might have the shape (64, 64, 256) (I just took some random numbers, this does not correspond to actual VGG). This means that you have 4096 256-dimensional vectors (for one specific image). Now you can apply K-Means on these vectors (for example with 5 clusters) and then color your image corresponding to the clustering result. The coloring is easy, since the 64x64 feature map represents a scaled down version of your image, and thus you just color the corresponding image region for each of these vectors.
I don't know if it might be a good idea to do the K-Means clustering on the combined output of many images, theoretically doing it on many images and one a single one should both give good results (even though for many images you probably would increase the number of clusters to account for the higher variation in your feature vectors).
QUESTION
according to the tutorial at this link I want to create my custom dataset and use it with tensorflow.
I have installed the tfds
command and when I entering tfds new my_dataset
command, I will encounter to this error :
ANSWER
Answered 2021-Apr-01 at 08:30this problem solved in tensorflow V2. so use tensorflow V2 or higher versions.
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