Senior Data Scientist, MassMutual
Lecturer, UC Berkeley MIDS
--
PhD Applied Math, Computational Story Lab, UVM
MS Applied Math, UVM
BS Math, Virginia Tech
words = text.replace(",", "").replace(".", "").replace("\n", " ").split(" ").map(d => d.toLowerCase())
[...text.matchAll("\\w+")]
[...text.matchAll("[\\w\\@\\#\\'\\&\\]\\*\\-\\/\\[\\=\\;]+")]
parser = function(txt) {
const regex = "[\\w\\@\\#\\'\\&\\]\\*\\-\\/\\[\\=\\;]+";
return [...txt.replace('---', ' ').replace('--', ' ').replace("''", " ").matchAll(regex)].map(d => d[0].toLowerCase());
}
parser(text)
dictionary = [{word: "a", value: 10, rank: 0}, {word: "b", value: 20, rank: 1}]
dictionary_words = dictionary.map(d => d.word)
index_lookup = Object.fromEntries(dictionary.map(d => [d.word, d.rank]))
counts = {
var counter = Array(Object.keys(index_lookup).length);
for (var i = 0; i < Object.keys(index_lookup).length; i++) {
counter[i] = 0;
}
for (var i = 0; i < words.length; i++) {
var word = words[i];
console.log(word);
if (word in index_lookup) {
console.log(index_lookup[word]);
counter[index_lookup[word]] += 1
}
}
return counter
}
Object.keys(index_lookup).length
counter = function(index_lookup, words) {
var tmp = Array(Object.keys(index_lookup).length);
for (var i = 0; i < Object.keys(index_lookup).length; i++) {
tmp[i] = 0;
}
for (var i = 0; i < words.length; i++) {
var word = words[i];
// console.log(word);
if (word in index_lookup) {
// console.log(index_lookup[word]);
tmp[index_lookup[word]] += 1
}
}
return tmp
}
counter(index_lookup, words)
"a" in dictionary_words
"a" in index_lookup
index_lookup["a"]
"c" in index_lookup
index_lookup["c"]
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