問題重現:

# -*- coding: utf-8 -*- import sys reload(sys) sys.setdefaultencoding('utf-8') # @Author: appleyuchi # @Date: 2018-12-31 16:11:34 # @Last Modified by: appleyuchi # @Last Modified time: 2018-12-31 16:54:56import numpy as np from hmmlearn import hmmstates = ["box 1", "box 2", "box3"] n_states = len(states)observations = ["red", "white"] n_observations = len(observations)start_probability = np.array([0.2, 0.4, 0.4])transition_probability = np.array([[0.5, 0.2, 0.3],[0.3, 0.5, 0.2],[0.2, 0.3, 0.5] ])emission_probability = np.array([[0.5, 0.5],[0.4, 0.6],[0.7, 0.3] ])model = hmm.MultinomialHMM(n_components=n_states) model.startprob_=start_probability model.transmat_=transition_probability model.emissionprob_=emission_probabilityseen = np.array([[0,1,0]]).Tlogprob, box = model.decode(seen, algorithm="viterbi") # print "observations=",observations print "seen=",seen# TypeError: only integer scalar arrays can be converted to a scalar indexprint("The ball picked:", ", ".join(map(lambda x: observations[x], seen))) print("The hidden box", ", ".join(map(lambda x: states[x], box)))

解決方案:

print("The ball picked:", ", ".join(map(lambda x: observations[x], seen)))

改為:

print("The ball picked:", ", ".join(map(lambda x: observations[x], seen[0])))

總結

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