abydos/distance/_ncd_bwtrle.py
def dist(self, src, tar):
        """Return the NCD between two strings using BWT plus RLE.

        Parameters
        ----------
        src : str
            Source string for comparison
        tar : str
            Target string for comparison

        Returns
        -------
        float
            Compression distance

        Examples
        --------
        >>> cmp = NCDbwtrle()
        >>> cmp.dist('cat', 'hat')
        0.75
        >>> cmp.dist('Niall', 'Neil')
        0.8333333333333334
        >>> cmp.dist('aluminum', 'Catalan')
        1.0
        >>> cmp.dist('ATCG', 'TAGC')
        0.8

        """
        if src == tar:
            return 0.0

        src_comp = self._rle.encode(self._bwt.encode(src))
        tar_comp = self._rle.encode(self._bwt.encode(tar))
        concat_comp = self._rle.encode(self._bwt.encode(src + tar))
        concat_comp2 = self._rle.encode(self._bwt.encode(tar + src))

        return (
            min(len(concat_comp), len(concat_comp2))
            - min(len(src_comp), len(tar_comp))
        ) / max(len(src_comp), len(tar_comp))
def dist(self, src, tar):
        """Return the NCD between two strings using BWT plus RLE.

        Parameters
        ----------
        src : str
            Source string for comparison
        tar : str
            Target string for comparison

        Returns
        -------
        float
            Compression distance

        Examples
        --------
        >>> cmp = NCDbwtrle()
        >>> cmp.dist('cat', 'hat')
        0.75
        >>> cmp.dist('Niall', 'Neil')
        0.8333333333333334
        >>> cmp.dist('aluminum', 'Catalan')
        1.0
        >>> cmp.dist('ATCG', 'TAGC')
        0.8

        """
        if src == tar:
            return 0.0

        src_comp = self._rle.encode(self._bwt.encode(src))
        tar_comp = self._rle.encode(self._bwt.encode(tar))
        concat_comp = self._rle.encode(self._bwt.encode(src + tar))
        concat_comp2 = self._rle.encode(self._bwt.encode(tar + src))

        return (
            min(len(concat_comp), len(concat_comp2))
            - min(len(src_comp), len(tar_comp))
        ) / max(len(src_comp), len(tar_comp))
Return the NCD between two strings using BWT plus RLE.

        Parameters
        ----------
        src : str
            Source string for comparison
        tar : str
            Target string for comparison

        Returns
        -------
        float
            Compression distance

        Examples
        --------
        >>> cmp = NCDbwtrle()
        >>> cmp.dist('cat', 'hat')
        0.75
        >>> cmp.dist('Niall', 'Neil')
        0.8333333333333334
        >>> cmp.dist('aluminum', 'Catalan')
        1.0
        >>> cmp.dist('ATCG', 'TAGC')
        0.8