think-bayes/cjs/Hist/index.js

An algorithm framework of probability and statistics for browser and Node.js environment.

"use strict";

require("core-js/modules/es.symbol");

require("core-js/modules/es.symbol.description");

require("core-js/modules/es.symbol.iterator");

require("core-js/modules/es.array.iterator");

require("core-js/modules/es.array.map");

require("core-js/modules/es.object.get-prototype-of");

require("core-js/modules/es.object.set-prototype-of");

require("core-js/modules/es.object.to-string");

require("core-js/modules/es.regexp.to-string");

require("core-js/modules/es.string.iterator");

require("core-js/modules/web.dom-collections.iterator");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _DictWrapper2 = _interopRequireDefault(require("../DictWrapper"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === "[object Arguments]")) { return; } var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a 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); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

/**
 * Represents a histogram, which is a map from values to frequencies.
 * Values can be any hashable type; frequencies are integer counters.
 * @param {string|array|object} values sequence of values
 * @param {string} name sequence of values
 */
var Hist =
/*#__PURE__*/
function (_DictWrapper) {
  _inherits(Hist, _DictWrapper);

  function Hist() {
    _classCallCheck(this, Hist);

    return _possibleConstructorReturn(this, _getPrototypeOf(Hist).apply(this, arguments));
  }

  _createClass(Hist, [{
    key: "freq",

    /**
     * Gets the frequency associated with the value x.
     * @param {any} x number value
     * @returns int frequency
     */
    value: function freq(x) {
      return this.d.get(x) || 0;
    }
    /**
     * Gets frequencies for a sequence of values.
     */

  }, {
    key: "freqs",
    value: function freqs(xs) {
      var _this = this;

      return xs.map(function (x) {
        return _this.freq(x);
      });
    }
    /**
     * Checks whether the values in this histogram are a subset of
     * the values in the given histogram.
     */

  }, {
    key: "isSubset",
    value: function isSubset(other) {
      var _iteratorNormalCompletion = true;
      var _didIteratorError = false;
      var _iteratorError = undefined;

      try {
        for (var _iterator = this.items()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
          var _step$value = _slicedToArray(_step.value, 2),
              val = _step$value[0],
              freq = _step$value[1];

          if (freq > other.freq(val)) return false;
        }
      } catch (err) {
        _didIteratorError = true;
        _iteratorError = err;
      } finally {
        try {
          if (!_iteratorNormalCompletion && _iterator.return != null) {
            _iterator.return();
          }
        } finally {
          if (_didIteratorError) {
            throw _iteratorError;
          }
        }
      }

      return true;
    }
    /**
     * Subtracts the values in the given histogram from this histogram.
     */

  }, {
    key: "subtract",
    value: function subtract(other) {
      var _iteratorNormalCompletion2 = true;
      var _didIteratorError2 = false;
      var _iteratorError2 = undefined;

      try {
        for (var _iterator2 = other.items()[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
          var _step2$value = _slicedToArray(_step2.value, 2),
              val = _step2$value[0],
              freq = _step2$value[1];

          this.incr(val, freq);
        }
      } catch (err) {
        _didIteratorError2 = true;
        _iteratorError2 = err;
      } finally {
        try {
          if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
            _iterator2.return();
          }
        } finally {
          if (_didIteratorError2) {
            throw _iteratorError2;
          }
        }
      }
    }
  }]);

  return Hist;
}(_DictWrapper2.default);

exports.default = Hist;
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