http://www.tanglyweb.com/home daily 0.75 2018-04-04 http://www.tanglyweb.com/home/2017/6/9/the-fluffy-side-of-data-science monthly 0.5 2017-06-09 http://www.tanglyweb.com/home/2016/7/31/porto-taxi monthly 0.5 2016-09-01 https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1472432271211-A1OJYG4L0SX7Q23V7ZFU/taxi_histogram Data Science - táxis de Portugal A 2D histogram of the organically hailed trips throughout the Porto metropolitan area. https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1472432389445-MLA2QQD6W2GLBVOIZLM1/image-asset.png Data Science - táxis de Portugal Notice that as we increase the number of clusters K, the total squared distance between rides and their nearest cluster naturally decreases. At some point, around K=5 or 6, it is clear that adding more clusters offers little additional explanatory valuable. https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1472692361014-SAD3JH8Q6NGSARCEPUPW/voronoi Data Science - táxis de Portugal A heat map of the destinations visited overlaid with a Voronoi diagram which indicates the classification boundaries for the K=6 clusters. https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1472685945120-YV7MD7U5C7UF52AW0WQE/map_capture Data Science - táxis de Portugal https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1472692748362-W8XJ5L94AGSFLO7MK3Q3/transition_matrix.png Data Science - táxis de Portugal Transition matrix. Square in (row=i, column=j) represents the percentage of rides arriving in cluster j that originate in clutser i. https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1472688905146-T5NFTTNJABBHF9AL15JH/image-asset.png Data Science - táxis de Portugal https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1472695425368-AQEQ37JN7YNQ30LRRB96/image-asset.png Data Science - táxis de Portugal A histogram-scatter of the as-the-crow-flies distance to that traveled by the taxi. http://www.tanglyweb.com/home/category/Data%2BDetails monthly 0.5 http://www.tanglyweb.com/home/category/Staircase+Wit monthly 0.5 http://www.tanglyweb.com/home/category/Sea+Level monthly 0.5 http://www.tanglyweb.com/home/category/Altitude monthly 0.5 http://www.tanglyweb.com/new-blog daily 1.0 2018-04-04 http://www.tanglyweb.com/new-blog/2018/4/3/skiing-the-grand-traverse monthly 0.5 2018-04-04 https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804454974-FZ1GURP8R1T02BVZINT4/gt_start.jpg Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804476808-CET1LNKP5D2BCVE9L7F2/IMG_8090.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804484620-FZKZ5KM3628I667351O2/IMG_8100.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804500654-HTRA1A8VKE7KOAVQSUOH/IMG_8101.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804493044-BH3F0YBHVVVT43XFLI3F/IMG_8119.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804500953-UCOJMJT1NVUV1IAMOMG6/IMG_8129.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804515027-Q75L89NYAG2NFHLIZA6W/IMG_8131.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804481319-HSAK2YDTR5UIXAM08MIN/IMG_0138.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804516021-455HYAK0X9ORKKB12FFV/IMG_8133.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804522119-DB1RSHLN1U044LI3I9PA/IMG_8140.JPG Mountains - Skiing the Grand Traverse https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1522804519538-D74OWWRFMCW7M0RL17EC/IMG_8143.JPG Mountains - Skiing the Grand Traverse http://www.tanglyweb.com/about daily 0.75 2020-05-03 https://images.squarespace-cdn.com/content/v1/579e0cbc44024362eb02cff7/1588463515427-ETH6MVFF3BPVPL449984/IMG_3683+%282%29.jpg About Me - Evan Welch I have a degree in Physics, a background in derivatives trading, and am now a data scientist in Seattle. Here you can find my musings, both quantitative and fluffy. http://www.tanglyweb.com/contact daily 0.75 2018-04-04 http://www.tanglyweb.com/my-index daily 0.75 2020-05-02 http://www.tanglyweb.com/new-page-2 daily 0.75 2026-03-20