def _entry_offset(self, index, entries, description):
        description = description.lower()

        for (offset, infos) in entries[index:]:
            for info in infos:
                if info['description'].lower().startswith(description):
                    return offset
        return -1
compute the  the center-update-size for each sample
dataset/ETHPy150Open devttys0/binwalk/src/binwalk/modules/extractor.py/Extractor._entry_offset--crossover with--dataset/ETHPy150Open pybrain/pybrain/pybrain/optimization/distributionbased/fem.py/FEM._computeUpdateSize