First simple realisation

source/Daemon.js

@@ -16,29 +16,29 @@ export default class Daemon {
         this.epsilon = epsilon;
     }
 
+    get power() {
+        return this.humanCount + this.robotCount;
+    }
+
     predict(journal) {
         const steps = this._getStepSlice(journal);
         const w0 = this._getWeight([...steps, 0]);
         const w1 = this._getWeight([...steps, 1]);
 
-        if (w1 > w0) {
-            return 1;
-        } else {
-            return 0;
-        }
+        return w1 > w0 ? 1 : 0;
     }
 
-    adjust(movements, humanValue, stepNumber) {
-        const steps = this._getStepSlice(movements);
-        const weightAdjustment = this._getWeightAdjustment(stepNumber);
-        this._adjustWeight([...steps, humanValue], weightAdjustment);
+    adjust(journal, humanValue) {
+        const steps = this._getStepSlice(journal);
+        const adjustmentWeight = this._getAdjustmentWeight(journal.length);
+        this._adjustWeight([...steps, humanValue], adjustmentWeight);
     }
 
-    _getStepSlice(movements) {
-        return movements.getLastMovements(this.humanCount, this.robotCount);
+    _getStepSlice(journal) {
+        return journal.getLastMovements(this.humanCount, this.robotCount);
     }
 
-    _getWeightAdjustment(stepNumber) {
+    _getAdjustmentWeight(stepNumber) {
         return Math.pow(1 + this.epsilon, stepNumber);
     }
 
@@ -51,6 +51,7 @@ export default class Daemon {
     _setWeight(steps, value) {
         const key = create_key(steps);
         this.weights[key] = value;
+        console.log('WEIGHTS', this.weights);
     }
 
     _adjustWeight(steps, weight) {

source/Journal.js

@@ -19,4 +19,8 @@ export default class Journal {
             humanMoves.slice(-humanCount)
         );
     }
+
+    get length() {
+        return this.moves.length;
+    }
 }

source/Predictor.js

@@ -1,13 +1,23 @@
-import History from './Journal';
+import Journal from './Journal';
 import Supervisor from './Supervisor';
+import Daemon from './Daemon';
 
 export default class Predictor {
-    movements;
+    score;
+    journal;
     supervisor;
-    score = 0;
 
     constructor() {
-        this.movements = new History();
-        this.supervisor = new Supervisor();
+        this.score = 0;
+        this.journal = new Journal();
+        this.supervisor = new Supervisor([new Daemon(3, 3)]);
+    }
+
+    pass(value) {
+        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;
     }
 }

source/Supervisor.js

@@ -1,9 +1,61 @@
+const DEFAULT_EPSILON = 0.01;
+
 export default class Supervisor {
     daemons = [];
+    epsilon;
 
-    constructor(daemons) {
-        this.daemons = daemons;
+    constructor(daemons, epsilon = DEFAULT_EPSILON) {
+        if (!daemons) {
+            throw Error('Empty daemon list');
+        }
+        this.daemons = daemons.map(daemon => ({
+            daemon: daemon,
+            rate: 0,
+        }));
+        this.epsilon = epsilon;
     }
 
-    predict(movements) {}
+    predict(journal) {
+        const predictions = this._createPredictions(journal);
+        const ordered = this._sortPredictions(predictions);
+
+        console.log(ordered);
+
+        return ordered[0].value;
+    }
+
+    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);
+        }
+    }
+
+    _createPredictions(journal) {
+        return this.daemons.map(daemon => ({
+            daemon: daemon,
+            power: daemon.daemon.power,
+            rate: daemon.rate,
+            value: daemon.daemon.predict(journal),
+        }));
+    }
+
+    _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;
+        });
+    }
+
+    _getAdjustmentWeight(stepNumber) {
+        return Math.pow(1 + this.epsilon, stepNumber);
+    }
 }

source/index.js

@@ -1,6 +1,6 @@
 import Vue from 'vue';
-import Predictor from './Predictor';
 import './style.css';
+import Predictor from './Predictor';
 
 new Vue({
     el: '#app',
@@ -8,8 +8,17 @@ new Vue({
         predictor: new Predictor(),
     },
     methods: {
+        click(v) {
+            const value = v ? 1 : 0;
+            this.pass(value);
+        },
+        press(evt) {
+            const value = evt.key === '1' ? 0 : 1;
+            this.pass(value);
+        },
         pass(value) {
-            console.log('PASS', value);
+            const prediction = this.predictor.pass(value);
+            console.log('PREDICTED', prediction, 'PASS', value);
         },
     },
 });

tests/DaemonTest.js

@@ -8,6 +8,11 @@ test('Get prediction for beginning', function() {
     expect(d.predict(m)).toEqual(0);
 });
 
+test('Can get power', function() {
+    const d = new Daemon(5, 8);
+    expect(d.power).toEqual(13);
+});
+
 test('Daemon 1-1', function() {
     const m = new History();
     const d = new Daemon(1, 1);

web/index.html

@@ -1,18 +1,18 @@
 <!DOCTYPE html>
 <html>
     <head>
-        <title>Hello</title>
+        <title>Predictor</title>
     </head>
     <body>
-        <main id="app" class="app">
+        <main id="app" class="app" tabindex="0" v-on:keyup="press">
             <span class="score">
                 {{ predictor.score }}
             </span>
             <div class="buttons">
-                <button value="0" v-on:click="pass(0)">0</button>
-                <button value="1" v-on:click="pass(1)">1</button>
+                <button value="0" v-on:click="click(0)">0</button>
+                <button value="1" v-on:click="click(1)">1</button>
             </div>
         </main>
-        <script src="/dist/app.js"></script>
+        <script src="dist/app.js"></script>
     </body>
 </html>