Код гадалки Шеннона перенесен в проект

source/_assets/predictor/Daemon.js

@@ -0,0 +1,145 @@
+const DEFAULT_EPSILON = 0.01;
+
+/**
+ * @param {Number[]} steps
+ *
+ * @returns {String}
+ */
+function create_key(steps) {
+    return steps.join(':');
+}
+
+class Daemon {
+    /**
+     * @type {Number}
+     */
+    base;
+
+    /**
+     * @type {Number}
+     */
+    humanCount;
+
+    /**
+     * @type {Number}
+     */
+    robotCount;
+
+    /**
+     * @type {Number}
+     */
+    epsilon;
+
+    /**
+     * @type {Object}
+     */
+    weights = {};
+
+    /**
+     * @param {Number} base
+     * @param {Number} humanCount
+     * @param {Number} robotCount
+     * @param {Number} epsilon
+     */
+    constructor(base, humanCount, robotCount, epsilon = DEFAULT_EPSILON) {
+        this.base = base;
+        this.humanCount = humanCount;
+        this.robotCount = robotCount;
+        this.epsilon = epsilon;
+    }
+
+    /**
+     * @returns {Number}
+     */
+    get power() {
+        return this.humanCount + this.robotCount;
+    }
+
+    /**
+     * @param {Journal} journal
+     *
+     * @returns {Number}
+     */
+    predict(journal) {
+        const steps = this._getStepSlice(journal);
+
+        const proposals = [];
+        for (let i = 0; i < this.base; ++i) {
+            proposals[i] = this._getWeight([...steps, i]);
+        }
+
+        const maxWeight = Math.max(...proposals);
+
+        return proposals.indexOf(maxWeight);
+    }
+
+    /**
+     * @param {Journal} journal
+     * @param {Number} humanValue
+     */
+    adjust(journal, humanValue) {
+        const steps = this._getStepSlice(journal);
+        const adjustmentWeight = this._getAdjustmentWeight(journal.length);
+        this._adjustWeight([...steps, humanValue], adjustmentWeight);
+    }
+
+    /**
+     * @param {Journal} journal
+     *
+     * @returns {Number[]}
+     */
+    _getStepSlice(journal) {
+        return journal.getLastMovements(this.humanCount, this.robotCount);
+    }
+
+    /**
+     * @param {Number} stepNumber
+     *
+     * @returns {Number}
+     *
+     * @private
+     */
+    _getAdjustmentWeight(stepNumber) {
+        return Math.pow(1 + this.epsilon, stepNumber);
+    }
+
+    /**
+     * @param {Number[]} steps
+     *
+     * @returns {Number}
+     *
+     * @private
+     */
+    _getWeight(steps) {
+        const key = create_key(steps);
+        const weight = this.weights[key];
+        return weight === undefined ? 0 : weight;
+    }
+
+    /**
+     * @param {Number[]} steps
+     * @param {Number} value
+     *
+     * @returns {Number}
+     *
+     * @private
+     */
+    _setWeight(steps, value) {
+        const key = create_key(steps);
+        this.weights[key] = value;
+    }
+
+    /**
+     * @param {Number[]} steps
+     * @param {Number} weight
+     *
+     * @private
+     */
+    _adjustWeight(steps, weight) {
+        const currentWeight = this._getWeight(steps);
+        const newWeight = currentWeight + weight;
+        this._setWeight(steps, newWeight);
+    }
+}
+
+export default Daemon;

source/_assets/predictor/Journal.js

@@ -0,0 +1,47 @@
+import Move from './Move';
+
+class Journal {
+    /**
+     * @type {Move[]}
+     */
+    moves = [];
+
+    /**
+     * @param {Move[]} moves
+     */
+    constructor(moves = []) {
+        this.moves = moves;
+    }
+
+    /**
+     * @param {Number} human
+     * @param {Number} robot
+     */
+    makeMove(human, robot) {
+        this.moves.push(new Move(human, robot));
+    }
+
+    /**
+     * @param {Number} humanCount
+     * @param {Number} robotCount
+     *
+     * @returns {Number[]}
+     */
+    getLastMovements(humanCount, robotCount) {
+        const humanMoves = this.moves.map(m => m.human);
+        const robotMoves = this.moves.map(m => m.robot);
+        return [].concat(
+            robotMoves.slice(-robotCount),
+            humanMoves.slice(-humanCount)
+        );
+    }
+
+    /**
+     * @returns {Number}
+     */
+    get length() {
+        return this.moves.length;
+    }
+}
+
+export default Journal;

source/_assets/predictor/Move.js

@@ -0,0 +1,15 @@
+/**
+ * Represents one game move.
+ */
+class Move {
+    /**
+     * @param {Number} human
+     * @param {Number} robot
+     */
+    constructor(human, robot) {
+        this.human = human;
+        this.robot = robot;
+    }
+}
+
+export default Move;

source/_assets/predictor/Predictor.js

@@ -0,0 +1,90 @@
+import Daemon from './Daemon';
+import Journal from './Journal';
+import Supervisor from './Supervisor';
+
+const DEFAULT_CONFIG = {
+    base: 2,
+    supervisor_epsilon: 0.01,
+    daemons: [
+        { human: 2, robot: 2, epsilon: 0.01 },
+        { human: 3, robot: 3, epsilon: 0.01 },
+        { human: 4, robot: 4, epsilon: 0.01 },
+        { human: 5, robot: 5, epsilon: 0.01 },
+        { human: 6, robot: 6, epsilon: 0.01 },
+    ],
+};
+
+export default class Predictor {
+    /**
+     * @type {Number}
+     */
+    base;
+
+    /**
+     * @type {Number}
+     */
+    score;
+
+    /**
+     * @type {Journal}
+     */
+    journal;
+
+    /**
+     * @type {Supervisor}
+     */
+    supervisor;
+
+    /**
+     * @param {Object} config
+     */
+    constructor(config = DEFAULT_CONFIG) {
+        this.base = config.base;
+        this.score = 0;
+        this.journal = new Journal();
+        const daemons = this._createDaemons(config.daemons);
+        this.supervisor = new Supervisor(daemons, config.supervisor_epsilon);
+    }
+
+    /**
+     * @param {Number|String} humanValue
+     *
+     * @returns {Number}
+     */
+    pass(humanValue) {
+        const value = parseInt(humanValue, 10);
+        if (value < 0 || value >= this.base) {
+            throw new Error(`Passed value must be in [0, ${this.base})`);
+        }
+        const prediction = this.supervisor.predict(this.journal);
+        this.score += prediction === value ? -1 : 1;
+        this.supervisor.adjust(this.journal, value);
+        this.journal.makeMove(value, prediction);
+        return prediction;
+    }
+
+    /**
+     * @param {Object} daemonConfigs
+     *
+     * @returns {Daemon[]}
+     *
+     * @private
+     */
+    _createDaemons(daemonConfigs) {
+        return daemonConfigs.map(config => {
+            return new Daemon(
+                this.base,
+                config.human,
+                config.robot,
+                config.epsilon || 0.01
+            );
+        });
+    }
+
+    /**
+     * @returns {Number}
+     */
+    stepCount() {
+        return this.journal.length;
+    }
+}

source/_assets/predictor/Supervisor.js

@@ -0,0 +1,102 @@
+const DEFAULT_EPSILON = 0.01;
+
+class Supervisor {
+    /**
+     * @type {{daemon: Daemon, rate: Number}[]}
+     */
+    daemons = [];
+
+    /**
+     * @type {Number}
+     */
+    epsilon;
+
+    /**
+     * @param {Daemon[]} daemons
+     * @param {Number} epsilon
+     */
+    constructor(daemons, epsilon = DEFAULT_EPSILON) {
+        if (!daemons || daemons.length === 0) {
+            throw Error('Empty daemon list');
+        }
+        this.daemons = daemons.map(daemon => ({
+            daemon: daemon,
+            rate: 0,
+        }));
+        this.epsilon = epsilon;
+    }
+
+    /**
+     * @param {Journal} journal
+     *
+     * @returns {Number}
+     */
+    predict(journal) {
+        const predictions = this._createPredictions(journal);
+        const ordered = this._sortPredictions(predictions);
+
+        return ordered[0].value;
+    }
+
+    /**
+     * @param {Journal} journal
+     * @param {Number} humanValue
+     */
+    adjust(journal, humanValue) {
+        const predictions = this._createPredictions(journal);
+        for (const prediction of predictions) {
+            if (prediction.value === humanValue) {
+                prediction.daemon.rate += this._getAdjustmentWeight(
+                    journal.length
+                );
+            }
+            prediction.daemon.daemon.adjust(journal, humanValue);
+        }
+    }
+
+    /**
+     * @param {Journal} journal
+     *
+     * @returns {Array}
+     *
+     * @private
+     */
+    _createPredictions(journal) {
+        return this.daemons.map(daemon => ({
+            daemon: daemon,
+            power: daemon.daemon.power,
+            rate: daemon.rate,
+            value: daemon.daemon.predict(journal),
+        }));
+    }
+
+    /**
+     * @param {Array} predictions
+     *
+     * @returns {Array}
+     *
+     * @private
+     */
+    _sortPredictions(predictions) {
+        return predictions.sort((result1, result2) => {
+            const rateDiff = result2.rate - result1.rate;
+            if (Math.abs(rateDiff) > 0.000001) {
+                return rateDiff;
+            }
+            return result1.power - result2.power;
+        });
+    }
+
+    /**
+     * @param {Number} stepNumber
+     *
+     * @returns {Number}
+     *
+     * @private
+     */
+    _getAdjustmentWeight(stepNumber) {
+        return Math.pow(1 + this.epsilon, stepNumber);
+    }
+}
+
+export default Supervisor;

source/_assets/predictor/demo.vue

@@ -39,7 +39,7 @@
 </template>
 
 <script>
-import Predictor from 'predictor';
+import Predictor from './Predictor';
 import Metrika from '../common/metrika';
 
 const PREDICTOR_GAME_END_GOAL = 'PREDICTOR_GAME_END';