Most of my career as an algorithm designer has been to boil problems down to their abstract essence, categorizing what kind of problem it is, reading papers to

Most of my career as an algorithm designer has been to boil problems down to their abstract essence, categorizing what kind of problem it is, reading papers to find a solution and implementing it. Unfortunately, ACM and IEEE are paywalled, as are many of the specialty journals for operations research and the like. Newer stuff is often on Arxiv, but the simple algorithms usually live in older papers that aren't.