simple-apriori/KoleksiItemset.js

Simple Apriori adalah library simple yang menerapkan metode Aprirori

'use strict';

const Itemset = require('./Itemset.js')

class KoleksiItemset extends Array {
    constructor() {
        super();
    }

    getItemUnik() {
        let itemUnik = new Itemset();

        for (var index in this) {
            let itemset = this[index];
            for (var i = 0; i < itemset.length; i += 1) {
                if (!itemUnik.includes(itemset[i])) {
                    itemUnik.push(itemset[i]);
                }
            }
        }

        //console.log(itemUnik);

        return itemUnik;
    }

    cariAprioriSupport(itemset) {
        let matchCount = 0;
        for (var index in this) {
            let is = this[index];
            if (is.gabungkanItemset(itemset)) {
                matchCount += 1;
            }
        }

        let support = (matchCount / this.length) * 100.0;
        // console.log(support);
        return support;
    }

    clear() {
        this.length = 0;
    }

}

module.exports = KoleksiItemset