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Appraisal

  • Extract / Convert features from Data

Modules

Usage

const data = [
  "twinkle twinkle little star",
  "How I wonder what you are",
  "up above the world so high",
  "like a diamond in the sky",
];

const vectorizer = new TextVectorizer({
  mode: "tfidf",
  config: { standardize: { lowercase: true } },
});

vectorizer.fit(data, "f32");

const vec = vectorizer.transform(data, "f32");

console.log(vec);
Output 
    
[
  Float64Array(20) [
    3.386294364929199, 2.386294364929199,
    2.386294364929199,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0
  ],
  Float64Array(20) [
                    0,                 0,
                    0, 2.386294364929199,
    2.386294364929199, 2.386294364929199,
    2.386294364929199, 2.386294364929199,
    2.386294364929199,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0,
                    0,                 0
  ],
  Float64Array(20) [
                    0,                  0,
                    0,                  0,
                    0,                  0,
                    0,                  0,
                    0,  2.386294364929199,
    2.386294364929199, 1.6931471824645996,
    2.386294364929199,  2.386294364929199,
    2.386294364929199,                  0,
                    0,                  0,
                    0,                  0
  ],
  Float64Array(20) [
                    0,                  0,
                    0,                  0,
                    0,                  0,
                    0,                  0,
                    0,                  0,
                    0, 1.6931471824645996,
                    0,                  0,
                    0,  2.386294364929199,
    2.386294364929199,  2.386294364929199,
    2.386294364929199,  2.386294364929199
  ]
]