64 lines
1.6 KiB
JavaScript
64 lines
1.6 KiB
JavaScript
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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2020 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var min = require( '@stdlib/math/base/special/min' );
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var cumin = require( './../../base/cumin' );
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var Float64Array = require( '@stdlib/array/float64' );
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var order = require( './order.js' );
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// MAIN //
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/**
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* Adjusts the p-values via the Benjamini-Hochberg procedure.
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*
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* @private
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* @param {ProbabilityArray} pvalues - p-values to be adjusted
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* @param {PositiveInteger} comparisons - number of comparisons
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* @returns {ProbabilityArray} adjusted p-values
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*/
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function bh( pvalues, comparisons ) {
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var indices;
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var sorted;
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var len;
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var out;
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var i;
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len = pvalues.length;
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indices = order( pvalues, true );
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sorted = new Float64Array( len );
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for ( i = 0; i < len; i++ ) {
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sorted[ i ] = comparisons / ( len - i ) * pvalues[ indices[ i ] ];
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}
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sorted = cumin( len, sorted, 1, sorted, 1 );
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out = new Array( len );
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for ( i = 0; i < len; i++ ) {
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out[ indices[ i ] ] = min( sorted[ i ], 1.0 );
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}
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return out;
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}
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// EXPORTS //
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module.exports = bh;
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