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Chalk
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Tracking mentions began in Dec 2020.
Breeze
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Arbitrary functions of n dimensions in Scala
Also, you can look at breeze.generic.UFunc for an inspiration.
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Data science in Scala
You can use https://github.com/scalanlp/breeze. A Scala library that's sorta a numpy/plotting equivalent. Unlike Spark which covers more use cases than just the classic Data Science workflow, Breeze is built specifically for "Data Science in Scala". The drawback is a classic one in Scala land where some major libraries abruptly get abandoned. Breeze's commits seem to have slowed down significantly and their website on their github page www.scalanlp.org is broken.
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Machine learning on JVM
I haven't checked in on this project in a long time, but Breeze is something akin to NumPy/SciPy.
What are some alternatives?
Spark Notebook - Interactive and Reactive Data Science using Scala and Spark.
ND4S - ND4S: N-Dimensional Arrays for Scala. Scientific Computing a la Numpy. Based on ND4J.
MGO - Purely functional genetic algorithms for multi-objective optimisation
Spire - Powerful new number types and numeric abstractions for Scala.
Libra - A dimensional analysis library based on dependent types
Apache Spark - Apache Spark - A unified analytics engine for large-scale data processing
Smile - Statistical Machine Intelligence & Learning Engine
Saddle
BigDL - Accelerate local LLM inference and finetuning (LLaMA, Mistral, ChatGLM, Qwen, Baichuan, Mixtral, Gemma, etc.) on Intel CPU and GPU (e.g., local PC with iGPU, discrete GPU such as Arc, Flex and Max). A PyTorch LLM library that seamlessly integrates with llama.cpp, HuggingFace, LangChain, LlamaIndex, DeepSpeed, vLLM, FastChat, ModelScope, etc.
Zeppelin - Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.