':param alg_option: the algorithm option of this parser. Currently support `arc-standard` and `arc-eager` algorithm
:type alg_option: str'

def __init__(self, alg_option):

    self._algo = alg_option
    if (alg_option not in [TransitionParser.ARC_STANDARD, TransitionParser.ARC_EAGER]):
        raise ValueError(('    Currently    we    only    support    %s    and    %s    ' % (TransitionParser.ARC_STANDARD, TransitionParser.ARC_EAGER)))
