time-to-botec/squiggle/node_modules/@stdlib/nlp/lda/lib/get_phis.js
NunoSempere b6addc7f05 feat: add the node modules
Necessary in order to clearly see the squiggle hotwiring.
2022-12-03 12:44:49 +00:00

56 lines
1.2 KiB
JavaScript

/**
* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var matrix = require( './matrix.js' );
// MAIN //
/**
* Get the phi matrix. Each row is a topic distribution over words.
*
* @private
* @returns {Matrix} phi parameter matrix
*/
function getPhis() {
/* eslint-disable no-invalid-this */
var Phi;
var val;
var k;
var w;
Phi = matrix( [ this.K, this.W ] );
for ( k = 0; k < this.K; k++ ) {
for ( w = 0; w < this.W; w++ ) {
val = ( this.nw.get( w, k ) + this.beta ) /
( this.nwSum[ k ] + ( this.W*this.beta ) );
Phi.set( k, w, val );
}
}
return Phi;
}
// EXPORTS //
module.exports = getPhis;