StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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83 lines
1.6 KiB
83 lines
1.6 KiB
/*!
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* assign-deep <https://github.com/jonschlinkert/assign-deep>
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*
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* Copyright (c) 2017, Jon Schlinkert.
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* Released under the MIT License.
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*/
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'use strict';
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var isPrimitive = require('is-primitive');
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var assignSymbols = require('assign-symbols');
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var typeOf = require('kind-of');
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function assign(target/*, objects*/) {
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target = target || {};
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var len = arguments.length, i = 0;
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if (len === 1) {
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return target;
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}
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while (++i < len) {
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var val = arguments[i];
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if (isPrimitive(target)) {
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target = val;
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}
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if (isObject(val)) {
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extend(target, val);
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}
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}
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return target;
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}
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/**
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* Shallow extend
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*/
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function extend(target, obj) {
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assignSymbols(target, obj);
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for (var key in obj) {
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if (isValidKey(key) && hasOwn(obj, key)) {
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var val = obj[key];
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if (isObject(val)) {
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if (typeOf(target[key]) === 'undefined' && typeOf(val) === 'function') {
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target[key] = val;
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}
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target[key] = assign(target[key] || {}, val);
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} else {
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target[key] = val;
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}
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}
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}
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return target;
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}
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/**
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* Returns true if the object is a plain object or a function.
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*/
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function isObject(obj) {
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return typeOf(obj) === 'object' || typeOf(obj) === 'function';
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}
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/**
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* Returns true if the given `key` is an own property of `obj`.
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*/
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function hasOwn(obj, key) {
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return Object.prototype.hasOwnProperty.call(obj, key);
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}
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/**
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* Returns true if the given `key` is a valid key that can be used for assigning properties.
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*/
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function isValidKey(key) {
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return key !== '__proto__' && key !== 'constructor' && key !== 'prototype';
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}
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/**
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* Expose `assign`
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*/
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module.exports = assign;
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