2d:null 2e:["$","title",null,{"children":"[AML] Filter kernel calculations | T.E. Schouten | Observable"}] 33:[] 31:{"id":"995ea798f2124830","slug":"filter-kernel-calculations","title":"[AML] Filter kernel calculations","thumbnail":"082f4052dc5a401eda3a8e806863713b4e13244c4be02a54b75701a267c282cc","access_level":"public","create_time":"$D2020-12-16T12:10:57.650Z","update_time":"$D2021-01-14T12:15:21.124Z","view_time":null,"first_public_time":"$D2020-12-16T15:17:05.997Z","has_unpublished_edits":null,"fork":false,"stars":1,"starred":false,"owner":{"type":"team","id":"d19a230dabb035d0","login":"thijsschouten","name":"T.E. Schouten","avatar_url":"https://avatars-next.observableusercontent.com/091c69f0b7b396df70696f26f5738dc8c19b50db5102fc472c06d6e7458dd1ec","tier":"starter_2024"},"version":480,"publish_version":480,"role":null,"authored":false,"authors":[{"type":"individual","id":"b8802c07e4374e6f","login":"thijsschouten","name":"T.E. Schouten","avatar_url":"https://avatars-next.observableusercontent.com/091c69f0b7b396df70696f26f5738dc8c19b50db5102fc472c06d6e7458dd1ec","tier":null}],"members":[{"type":"individual","id":"b8802c07e4374e6f","login":"thijsschouten","name":"T.E. Schouten","avatar_url":"https://avatars-next.observableusercontent.com/091c69f0b7b396df70696f26f5738dc8c19b50db5102fc472c06d6e7458dd1ec","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":1,"collection":null,"type":"notebook","body":{"title":"[AML] Filter kernel calculations","cells":[{"id":0,"value":"md`# [AML] Filter kernel calculations\n\nGo to either \nhttp://trinket.io/embed/python3 \nor https://ideone.com/WBhFRH \n..or use local python install.\n\nThen run this code:\n\n\\`\\`\\`python\nfrom scipy import signal\nfrom scipy import misc\n\nimport numpy as np\n\nkernel = np.array([[1, 1, 1],\n [0, 0, 0],\n [-1, -1, -1]])\n\nimg = np.array([[0,5,5,5,0],\n [0,5,5,5,0],\n [0,5,0,0,0],\n [0,5,5,5,0],\n [0,5,5,5,0]]) \n\n# Switch mode to \"valid\" to disable 0-padding\nprint(signal.convolve2d(img, kernel[::-1, ::-1], boundary='fill', mode='same'))\n\\`\\`\\`\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":251,"value":"md` \n

---

\n\n` ","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":145,"value":"md`# Bag of words`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":219,"value":"md`Edit the following array; ctrl+enter runs the cell. Rest runs automagically.`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":148,"value":"sentences = [\n \"it was the worst of times of\",\n \"it was the age of wisdom\",\n \"it was the age of foolishness\"\n ]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":259,"value":"viewof alpha = checkbox([\"Alphabetically\"])","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":236,"value":"viewof dropWords = select({\n options: vocab,\n multiple: true,\n description: \"Ctrl+click on words to remove from vocab.\",\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":162,"value":"md`\n#### *Result* \nVocab: \n\n[${editedVocab.join(\", \")}] \n\nVectors:\n\n${vectorMd}\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":216,"value":"md` \n

---

\n\n` ","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":212,"value":"editedSentences = {\n return sentences.map(v => v.toLowerCase())\n \n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":150,"value":"vocab = {\n let vocab = []\n Object.values(sentences).forEach(wa => {\n let wb = wa.trim()\n let wordArray = wb.split(' ')\n Object.values(wordArray).forEach(w => {\n \n if (!vocab.includes(w)){\n vocab.push(w.toLowerCase())\n }\n })\n })\n return vocab \n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":172,"value":"editedVocab = {\n let r = []\n Object.values(vocab).forEach(x => {\n if (!dropWords.includes(x)){\n r.push(x)\n }\n })\n if (alpha == \"Alphabetically\") {\n return r.sort((a, b) => a.localeCompare(b))\n }\n return r\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":170,"value":"vectorMd = {\n let out = \"\"\n\n Object.values(editedSentences).forEach(wa => {\n out = out.concat(wa, \"
\") \n \n const wordArray = wa.split(' ')\n let wordVecStr = '['\n \n Object.values(editedVocab).forEach((w, i) => {\n let a = countInArray(wordArray, w)\n wordVecStr = wordVecStr.concat(a+ \", \" )\n })\n wordVecStr = wordVecStr.slice(0, -2)\n out = out.concat(wordVecStr, \"]

\" ) \n })\n \n return out\n \n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":274,"value":"countInArray = (array, value) => {\n return array.reduce((n, x) => n + (x === value), 0);\n }","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":228,"value":"`---`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":225,"value":"import {select, checkbox} from \"@jashkenas/inputs\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W33","stdlib":"1","titling":"auto"}} 32:"$31:body"