深思快想 瞬間看透事物本質的豐田思考術
稻垣公夫 / 2017
Toyota 對管理學的貢獻包括看板、改善和 Lean management 這些觀念，最近還有A3報告書。但如何把意念濃縮成 A3 卻不容易，這是思考方法之範籌，Toyota稱之為Zoom in zoom out，即是從具體至抽象之間來回。
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Genovese (2001) Interacting Multiple Model Algorithm for Accurate State Estimation of Maneuvering Targets
A very short publication introducing the IMM filter. It describes a system with multiple models, and in each model, there is a state. The model transition is a ergodic Markov chain with probability matrix , and state transition in each mode is a linear dynamic system. The state transition and...
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How to calculate percentile
Think about it for a short while, anyone can see that there is no definitive way
to define what is a percentile. What is surprising is how many different ways we
can define it.
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Downsampling algorithms
This is from a master thesis that try to downsample a line chart (time series) but retain all visual characteristics. What I know about downsampling is to assume the input is a signal and pass it through a low-pass filter, as we have learned in the undergraduate signal & system...
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Mandelbrot set SQL
using common table expressions in SQLite
There is a recent change in SQLite
documentation, that depicts the use of
common table expressions (CTEs) in SQLite to draw a Mandelbrot set using ASCII
art:
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