Method _update

pattern/vector/__init__.py:877–886

(self)

        f.close()
    
    def _update(self):
        # Ensures that all document vectors are recalculated
        # when a document is added or deleted (= new features).
        self._df  = {}
        self._cos = {}
        self._ig  = {}
        self._vector = None
        self._lsa = None
        for document in self.documents:
            document._vector = None
    
    def __len__(self):
        return len(self.documents)