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Show HN:我用SQL实现了一个神经网络 -- Show HN: I implemented a neural network in SQL

文章摘要

训练后的参数以xarray格式返回,且形状与原始数据保持一致。

文章总结

训练后的参数以xarray格式返回,其形状与原始输入保持一致。

评论总结

以下是对评论内容的总结,涵盖主要观点、论据及不同视角的平衡性:

1. 正面评价:技术新颖且令人印象深刻

  • 观点:该项目将神经网络与SQL结合,通过关系代数作为中间表示(IR),让数据库优化器处理张量程序,思路巧妙。
  • 关键引用
    • "initially rolled my eyes at 'neural networks in SQL,' but after reading the code I came away impressed... using relational algebra as the IR, letting a database optimizer reason about tensor programs" (评论2)
    • "Jokes aside, sounds really impressive, though I only understood about 10% :D" (评论1)

2. 类比与延伸:与现有技术或概念相似

  • 观点:该项目类似于“X运行Doom”的演示(但针对神经网络),或与爱因斯坦求和(einsum)和数据库连接在数学上等价(不同半环)。
  • 关键引用
    • "Feels analogous to 'X runs Doom' demos (but NN)." (评论4)
    • "Mathematically, einsum and database joins are the same thing, just over different semirings (real numbers for einsum, booleans for databases)." (评论5)

3. 历史与局限性:并非全新,存在已知限制

  • 观点:该等价性在早期论文中已有提及(如Tensor Logic、TenSQL),且关系模型在处理三角查询时存在组合爆炸问题,无法完全覆盖所有操作。
  • 关键引用
    • "I don't want to rain on discovering a genuinely cool bit of theory, but it's not 'new' per se... The equivalence with Einstein summation was noted in this paper." (评论10)
    • "If you accept an inability to express triangular queries, you can get something that's embarrassingly parallel... but there are fundamental scaling problems with natural joins." (评论10)

4. 实践与实现:已有类似工作或尝试

  • 观点:过去已有平台(如MADlib、SQL Server)将ML算法集成到SQL中,也有个人项目(如pg_gpt2)实现类似功能。
  • 关键引用
    • "In the past platforms have integrated ML algorithms into relational databases and SQL through extensions... A famous open source one was MADlib." (评论6)
    • "I have done similar as well: https://github.com/seanwevans/pg_gpt2" (评论9)

5. 其他评论(中性或幽默)

  • 观点:部分评论以幽默或简短方式表达兴趣(如“Fable is impressed”),或提及尝试意愿(如“I'll try it next time I've got Greece vacation money”)。
  • 关键引用
    • "Fable is impressed." (评论7)
    • "Looks good, i will try today" (评论11)

总结:评论整体认可该项目的技术创意,但指出其理论基础(关系代数与张量程序的等价性)并非全新,且存在实际限制(如三角查询的扩展性问题)。部分评论提供了历史背景和类似实现,平衡了创新性与已知局限性。