text: "use strict";
  Object.defineProperty(exports, "__esModule", { value: true });
  const Document_1 = require("../data/Document");
  const Maths_1 = require("../core/Maths");
  const Obj_1 = require("../util/Obj");
  const priors = (ds, clss) => clss.reduce((hist, cls) => (Object.assign({}, hist, { [cls]: Document_1.Document.clsProbability(ds, cls) })), {});
  const condProbability = (ds, cls) => Array.from(ds.vocab).reduce((hist, term) => (Object.assign({}, hist, { [term]: Document_1.Document.termProbability(Document_1.Document.where(ds, cls), term) })), {});
  const odds = (ds, clss = Document_1.Document.classes(ds)) => ({
      clss,
      priors: exports.Multinomial.priors(ds, clss),
      conds: clss.reduce((conds, cls) => (Object.assign({}, conds, { [cls]: exports.Multinomial.condProbability(ds, cls) })), {}),
  });
  const classify = (d, odds, p = 1) => {
      const ps = odds.clss.map(cls => Maths_1.Maths.log(odds.priors[cls] ** p) + Maths_1.Maths.sum(...Array.from(Document_1.Document.vocab(d.str)).map(term => Maths_1.Maths.nanz(Maths_1.Maths.log(odds.conds[cls][term]), 0))));
      return odds.clss[ps.indexOf(Maths_1.Maths.max(...ps))];
  };
  const stop = (odds, vocab) => (Object.assign({}, odds, { conds: Obj_1.Obj.map(odds.conds, cond => Obj_1.Obj.filter(cond, (_, term) => !vocab.has(term))) }));
  exports.Multinomial = {
      priors,
      condProbability,
      odds,
      classify,
      stop,
  };
  