1 | 'use strict';
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 |
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7 | var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
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8 |
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9 | var _base = require('./base');
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10 |
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11 | var _base2 = _interopRequireDefault(_base);
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12 |
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13 | var _arrays = require('../arrays');
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14 |
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15 | var Arrays = _interopRequireWildcard(_arrays);
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16 |
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17 | function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
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18 |
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19 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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20 |
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21 | function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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22 |
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23 | function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
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24 |
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25 | function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
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26 |
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27 |
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28 |
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29 |
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30 |
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31 | var GaussianKernel = function (_Kernel) {
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32 | _inherits(GaussianKernel, _Kernel);
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33 |
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34 | |
35 |
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36 |
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37 |
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38 |
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39 | function GaussianKernel() {
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40 | var sigmaSquared = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 1;
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41 |
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42 | _classCallCheck(this, GaussianKernel);
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43 |
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44 | |
45 |
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46 |
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47 |
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48 |
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49 | var _this = _possibleConstructorReturn(this, (GaussianKernel.__proto__ || Object.getPrototypeOf(GaussianKernel)).call(this));
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50 |
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51 | _this.sigmaSquared = sigmaSquared;
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52 | return _this;
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53 | }
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54 |
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55 | |
56 |
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57 |
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58 |
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59 |
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60 | _createClass(GaussianKernel, [{
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61 | key: 'apply',
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62 | value: function apply(x, y) {
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63 |
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64 | var diff = Arrays.sum(x, Arrays.scale(y, -1));
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65 | return Math.exp(-Arrays.dot(diff, diff) / (2 * this.sigmaSquared));
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66 | }
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67 | }]);
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68 |
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69 | return GaussianKernel;
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70 | }(_base2.default);
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71 |
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72 | exports.default = GaussianKernel;
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73 | module.exports = exports.default; |
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