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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65 lines
1.4 KiB
65 lines
1.4 KiB
"use strict"
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var tape = require("tape")
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var uniq = require("uniq")
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var ch = require("../ich")
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function createSphere(dimension, numBoundary, numInterior) {
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var points = []
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for(var i=0; i<numBoundary; ++i) {
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var point = new Array(dimension)
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var r2 = 0.0
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for(var j=0; j<dimension; ++j) {
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var v = Math.random()-0.5
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r2 += v*v
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point[j] = v
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}
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var r = Math.sqrt(r2)
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for(var j=0; j<dimension; ++j) {
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point[j] /= r
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}
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points.push(point)
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}
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for(var i=0; i<numInterior; ++i) {
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var point = new Array(dimension)
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for(var j=0; j<dimension; ++j) {
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point[j] = 0.5 * (Math.random() - 0.5)
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}
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points.push(point)
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}
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return points
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}
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function testSphere(t, dimension, numBoundary, numInterior) {
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var s = createSphere(dimension, numBoundary, numInterior)
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var hull = ch(s)
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var boundary = uniq(hull.reduce(function(f, c) {
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f.push.apply(f, c)
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return f
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}, []), function(a,b) { return a-b })
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t.equals(boundary.length, numBoundary, "sphere " + dimension + " boundary ok")
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for(var i=0; i<boundary.length; ++i) {
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t.equals(boundary[i], i, "boundary " + i)
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}
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}
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tape("sphere 2d", function(t) {
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for(var i=0; i<10; ++i) {
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testSphere(t, 2, 50, 50)
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}
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t.end()
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})
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tape("sphere 3d", function(t) {
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for(var i=0; i<10; ++i) {
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testSphere(t, 3, 100, 100)
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}
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t.end()
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})
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tape("sphere 4d", function(t) {
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for(var i=0; i<10; ++i) {
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testSphere(t, 4, 120, 120)
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}
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t.end()
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}) |