Update example code

Planeshifter · Planeshifter · commit 6535d55cebfe · 2018-07-09T16:18:56.000+09:00
diff --git a/lib/node_modules/@stdlib/nlp/lda/README.md b/lib/node_modules/@stdlib/nlp/lda/README.md
@@ -98,31 +98,35 @@ var words = model.getTerms( 0, 3 );
 <!-- eslint no-undef: "error" -->
 
 ```javascript
-var getSpeeches = require( '@stdlib/datasets/sotu' );
+var sotu = require( '@stdlib/datasets/sotu' );
 var roundn = require( '@stdlib/math/base/special/roundn' );
-var STOPWORDS = require( '@stdlib/datasets/stopwords-en' );
+var stopwords = require( '@stdlib/datasets/stopwords-en' );
+var lowercase = require( '@stdlib/string/lowercase' );
 var lda = require( '@stdlib/nlp/lda' );
 
 var speeches;
+var words;
 var terms;
 var model;
 var str;
 var i;
+var j;
 
-function getText( e ) {
-    str = e.text.toLowerCase();
-    STOPWORDS.forEach( remove );
-    return str;
-
-    function remove( word ) {
-        var RE = new RegExp( '\\b' + word + '\\b', 'gi' );
-        str = str.replace( RE, '' );
-    }
+words = stopwords();
+for ( i = 0; i < words.length; i++ ) {
+    words[ i ] = new RegExp( '\\b'+words[ i ]+'\\b', 'gi' );
 }
 
-speeches = getSpeeches({
+speeches = sotu({
     'range': [ 1930, 2010 ]
-}).map( getText );
+});
+for ( i = 0; i < speeches.length; i++ ) {
+    str = lowercase( speeches[ i ].text );
+    for ( j = 0; j < words.length; j++ ) {
+        str = str.replace( words[ j ], '' );
+    }
+    speeches[ i ] = str;
+}
 
 model = lda( speeches, 3 );
 
