Discount Usability: 20 Years (Jakob Nielsen's Alertbox)
by karlcowSimple user testing with 5 participants, paper prototyping, and heuristic evaluation offer a cheap, fast, and early focus on usability, as well as many rounds of iterative design.
Simple user testing with 5 participants, paper prototyping, and heuristic evaluation offer a cheap, fast, and early focus on usability, as well as many rounds of iterative design.
As software becomes more and more complex, it is more and more important to structure it well. Well-structured software is easy to write, easy to debug, and provides a collection of modules that can be re-used to reduce future programming costs. Conventional languages place conceptual limits on the way problems can be modularised. Functional languages push those limits back. In this paper we show that two features of functional languages in particular, higher-order functions and lazy evaluation, can contribute greatly to modularity. As examples, we manipulate lists and trees, program several numerical algorithms, and implement the alpha-beta heuristic (an algorithm from Artificial Intelligence used in game-playing programs). Since modularity is the key to successful programming, functional languages are vitally important to the real world.
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A user-centered design agency providing services in interaction design, Web design, design strategy, usability testing and heuristic evaluations.
"Always produce" is more than just a test of earnestness though. It's also a heuristic for finding the work you love. If you subject yourself to that constraint, it will automatically push you away from things you think you're supposed to work on, toward
針對 N Puzzle，之前以 CLIPS, C Language Integrated Production System 求解過，那是專家系統的課，所以我也很配合地，以 heuristic 的方式，寫起一條條的 production rules 。
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