scalanlp/breeze

Lazy Matrix/Vector implementations

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#310 建立於 2014年9月5日

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 (1 留言) (0 反應) (0 負責人)Scala (3,453 star) (690 fork)batch import
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描述

This may stem from my lack of knowledge on how breeze works. I was wondering if you have support for lazy operations that only happen when needed.

Something like val a = Matrix.rand(3,3) val b = Matrix.rand(3,3)

val c = a + b where c is a LazyMatrix represented by a, b and the operation +

貢獻者指南

技術棧
scala
領域
performance
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
over 1 week
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
needs investigation
前置要求
ScalaBreeze libraryLazy evaluation patternsMatrix operations
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
20
研究方向
Investigate Breeze's current matrix and vector implementations in the breeze.linalg package to understand how operations are currently performed. Explore Scala's lazy evaluation features like by name parameters and lazy val. Look at similar lazy matrix libraries for inspiration. Comment on the issue with a proposed design and ask maintainers for feedback on feasibility and direction.