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PyTorch vs TensorFlow.js: What are the differences?
Introduction
PyTorch and TensorFlow.js are both popular frameworks used for developing machine learning models. While PyTorch is primarily used for deep learning tasks, TensorFlow.js is designed for running machine learning models in the browser. Despite having similar functionality, there are several key differences between the two frameworks.
1. Tensor Computation: PyTorch and TensorFlow.js have different approaches to tensor computations. PyTorch uses dynamic computational graphs, allowing for more flexibility and ease of debugging. On the other hand, TensorFlow.js uses static computational graphs, which optimize performance and facilitate deployment on different platforms.
2. Backend Language: PyTorch is primarily implemented in Python and leverages its rich ecosystem of libraries and tools for scientific computing. In contrast, TensorFlow.js uses JavaScript, enabling the execution of machine learning models directly in web browsers.
3. Model Development: PyTorch offers a more intuitive and pythonic API, making it easier for researchers and developers to experiment with new models and architectures. TensorFlow.js, on the other hand, provides a higher-level API with pre-built layers and models, making it more accessible for web developers without extensive machine learning knowledge.
4. Training Flexibility: PyTorch offers more flexibility in defining and customizing training loops. Developers have fine-grained control over every step of the training process, making it suitable for research purposes. In contrast, TensorFlow.js focuses on providing a high-level API for training and evaluation, which simplifies the process but may limit customization options.
5. Deployment: PyTorch models are typically deployed using frameworks like Flask or Django, allowing for serving models as web APIs. TensorFlow.js, being designed for web deployment, offers direct integration with web tools and libraries, allowing models to be executed client-side, reducing network latency and server load.
6. Community and Ecosystem: While both frameworks have active communities, TensorFlow.js has a larger and more mature ecosystem due to its association with TensorFlow. TensorFlow.js provides various pre-trained models and tools for transfer learning, making it easier to leverage existing models for different tasks.
In summary, PyTorch and TensorFlow.js differ in their tensor computation approach, backend language, model development experience, training flexibility, deployment options, and community support.
Pytorch is a famous tool in the realm of machine learning and it has already set up its own ecosystem. Tutorial documentation is really detailed on the official website. It can help us to create our deep learning model and allowed us to use GPU as the hardware support.
I have plenty of projects based on Pytorch and I am familiar with building deep learning models with this tool. I have used TensorFlow too but it is not dynamic. Tensorflow works on a static graph concept that means the user first has to define the computation graph of the model and then run the ML model, whereas PyTorch believes in a dynamic graph that allows defining/manipulating the graph on the go. PyTorch offers an advantage with its dynamic nature of creating graphs.
For my company, we may need to classify image data. Keras provides a high-level Machine Learning framework to achieve this. Specifically, CNN models can be compactly created with little code. Furthermore, already well-proven classifiers are available in Keras, which could be used as Transfer Learning for our use case.
We chose Keras over PyTorch, another Machine Learning framework, as our preliminary research showed that Keras is more compatible with .js. You can also convert a PyTorch model into TensorFlow.js, but it seems that Keras needs to be a middle step in between, which makes Keras a better choice.
For data analysis, we choose a Python-based framework because of Python's simplicity as well as its large community and available supporting tools. We choose PyTorch over TensorFlow for our machine learning library because it has a flatter learning curve and it is easy to debug, in addition to the fact that our team has some existing experience with PyTorch. Numpy is used for data processing because of its user-friendliness, efficiency, and integration with other tools we have chosen. Finally, we decide to include Anaconda in our dev process because of its simple setup process to provide sufficient data science environment for our purposes. The trained model then gets deployed to the back end as a pickle.
A large part of our product is training and using a machine learning model. As such, we chose one of the best coding languages, Python, for machine learning. This coding language has many packages which help build and integrate ML models. For the main portion of the machine learning, we chose PyTorch as it is one of the highest quality ML packages for Python. PyTorch allows for extreme creativity with your models while not being too complex. Also, we chose to include scikit-learn as it contains many useful functions and models which can be quickly deployed. Scikit-learn is perfect for testing models, but it does not have as much flexibility as PyTorch. We also include NumPy and Pandas as these are wonderful Python packages for data manipulation. Also for testing models and depicting data, we have chosen to use Matplotlib and seaborn, a package which creates very good looking plots. Matplotlib is the standard for displaying data in Python and ML. Whereas, seaborn is a package built on top of Matplotlib which creates very visually pleasing plots.
Pros of PyTorch
- Easy to use15
- Developer Friendly11
- Easy to debug10
- Sometimes faster than TensorFlow7
Pros of TensorFlow.js
- Open Source6
- NodeJS Powered5
- Deploy python ML model directly into javascript2
- Cost - no server needed for inference1
- Privacy - no data sent to server1
- Runs Client Side on device1
- Can run TFJS on backend, frontend, react native, + IOT1
- Easy to share and use - get more eyes on your research1
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Cons of PyTorch
- Lots of code3
- It eats poop1