问题描述
我想使用biopython的Bio.MarkovModel.train_visible()为核苷酸序列训练二阶Markov模型。也就是说,alphabet=["A","T","G","C"],states=["AA","AT","TT"...]
474 states_indexes = itemindex(states)
475 outputs_indexes = itemindex(alphabet)
--> 476 for toutputs,tstates in training_data:
477 if len(tstates) != len(toutputs):
478 raise ValueError("states and outputs not aligned")
ValueError: too many values to unpack (expected 2)
表明我可能会给 我尝试将我的training_data作为一对列表提供:
training_data=(['A','T'...],['AA','AT'...])
以及此列表对的压缩列表:
training_data=[('A','AA'),('T','AT')...]
但无济于事。
training_set
的正确格式是什么?
谢谢!
解决方法
有关预期输入的示例,请参见文件test_MarkovModel.py:
>>> from Bio import MarkovModel
>>> states = ["0","1","2","3"]
>>> alphabet = ["A","C","G","T"]
>>> training_data = [
("AACCCGGGTTTTTTT","001112223333333"),("ACCGTTTTTTT","01123333333"),("ACGGGTTTTTT","01222333333"),("ACCGTTTTTTTT","011233333333"),]
>>> markov_model = MarkovModel.train_visible(states,alphabet,training_data)
>>> states = MarkovModel.find_states(markov_model,"AACGTT")
>>> print(states)
[(['0','0','1','2','3','3'],0.008212890625000005)]