七段顯示器辨識 | JavaScript 程式專案

{"id":71802,"student_id":10,"content":"var a = createSprite(\"b.png\");\na.moveTo(100, 50);\n\nvar b = createSprite(\"b.png\");\nb.direction = 0;\nb.moveTo(40, 110);\n\nvar c = createSprite(\"b.png\");\nc.direction = 0;\nc.moveTo(160, 110);\n\nvar d = createSprite(\"b.png\");\nd.moveTo(100, 170);\n\nvar e = createSprite(\"b.png\");\ne.direction = 0;\ne.moveTo(40, 230);\n\nvar f = createSprite(\"b.png\");\nf.direction = 0;\nf.moveTo(160, 230);\n\nvar g = createSprite(\"b.png\");\ng.moveTo(100, 290);\n\nvar blocks = [a, b, c, d, e, f, g];\nvar inputs = [0, 0, 0, 0, 0, 0, 0];\nvar weights = [\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n    [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1],\n]\n\nblocks.forEach((b) =\u003e {\n    b.on('click', () =\u003e {\n        b.opacity = b.opacity == 1 ? 0.2: 1;\n    });\n});\n\n\n\nforever(function() {\n    var data = blocks.map((b) =\u003e {\n        return b.opacity == 1 ? 1: 0;\n    });\n    inputs = data;\n\n    var output = NN(data, weights);\n    \n    for (var i=0; i\u003c10; i++) {\n        print(output[i], 400, 200 + 15*i);\n    }\n    print(output.indexOf(Math.max(...output)), 400, 400, 'red');\n});\n\n\nfunction NN (inputs, weights) {\n    var i = inputs;\n    var arr = weights.map((w) =\u003e {\n        return i[0]*w[0] + i[1]*w[1] + i[2]*w[2] + i[3]*w[3] + i[4]*w[4] + i[5]*w[5] + i[6]*w[6];\n    });\n    return arr.map(sigmoid);\n}\n\n\nfunction train (inputs, target) {\n    var output = NN(inputs, weights);\n    \n    for (var i=0; i\u003c10; i++) {\n        var lose = target[i] - output[i];\n        var error = lose*dsigmoid(output[i]);\n        \n        for (var j=0; j\u003c7; j++) {\n            weights[i][j] = weights[i][j] + 0.2*inputs[j]*error;\n        }\n    }\n}\n\nvar d = [\n    [[1, 1, 1, 0, 1, 1, 1], [1,-1,-1,-1,-1,-1,-1,-1,-1,-1]], // 0\n    [[0, 0, 1, 0, 0, 1, 0], [-1,1,-1,-1,-1,-1,-1,-1,-1,-1]], // 1\n    [[1, 0, 1, 1, 1, 0, 1], [-1,-1,1,-1,-1,-1,-1,-1,-1,-1]], // 2\n    [[1, 0, 1, 1, 0, 1, 1], [-1,-1,-1,1,-1,-1,-1,-1,-1,-1]], // 3\n    [[0, 1, 1, 1, 0, 1, 0], [-1,-1,-1,-1,1,-1,-1,-1,-1,-1]], // 4\n    [[1, 1, 0, 1, 0, 1, 1], [-1,-1,-1,-1,-1,1,-1,-1,-1,-1]], // 5\n    [[1, 1, 0, 1, 1, 1, 1], [-1,-1,-1,-1,-1,-1,1,-1,-1,-1]], // 6\n    [[1, 1, 1, 0, 0, 1, 0], [-1,-1,-1,-1,-1,-1,-1,1,-1,-1]], // 7\n    [[1, 1, 1, 1, 1, 1, 1], [-1,-1,-1,-1,-1,-1,-1,-1,1,-1]], // 8\n    [[1, 1, 1, 1, 0, 1, 0], [-1,-1,-1,-1,-1,-1,-1,-1,-1,1]], // 9\n];\n\nfor (var i=0; i\u003c10; i++) {\n    d.forEach((arr) =\u003e {\n        train(arr[0], arr[1]);\n    });\n}\n\n\n","created_at":"2019-06-12T18:37:49.224+08:00","updated_at":"2019-11-01T19:55:56.623+08:00","name":"七段顯示器辨識","language":"javascript","screenshot":{"url":"https://cdn7.koding.school/uploads/project/screenshot/71802/424817ca0ae4f0ce81adb16469a51ec2.jpg"},"parent_id":2,"plugin":"// sigmoid(x)=tanh(x)\nfunction sigmoid(x) {\n  var tanh = (Math.exp(x) - Math.exp(-x)) / (Math.exp(x) + Math.exp(-x));\n  return tanh; // 雙曲正切函數\n}\n\n// dsigmoid(x)=1-x^2;\n// 參考：http://pynopticon.googlecode.com/svn/trunk/src/vlfeat/toolbox/special/dsigmoid.m\n// 參考：http://en.wikipedia.org/wiki/Sigmoid_function\nfunction dsigmoid(x) {\n  return 1.0 - x*x;\n}","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":326,"hashid":"yeysrj9g","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}