Create_transition_matrix

[yildirimga]

I guess that

def create_transition_matrix(alpha, tag_counts, transition_counts):
    ''' 
    Input: 
        alpha: number used for smoothing
        tag_counts: a dictionary mapping each tag to its respective count
        transition_counts: a dictionary where the keys are (prev_tag, tag) and the values are the counts
    Output:
        A: matrix of dimension (num_tags,num_tags)
    '''
    # Get a sorted list of unique POS tags
    all_tags = sorted(tag_counts.keys(), key=lambda x: str(x))

If i don’t pass key=lambda x: str(x)) to sorted function, I got an error since almost all tag_counts keys are string but last few keys are integer.

I got an error without it, basically making sure that each key is string. I don’t know if others encountere a problem. I just want to share it.

Thanks,

[Deepti_Prasad]

hi @yildirimga

check this

C2_W2 create_transition_matrix (Errors)

When defining your create_transition_matrix: Replace count_prev_tag = tag_counts[i] with count_prev_tag = tag_counts[all_tags[i]] if you made that mistake. Then you should not end up with integers in the tag_counts keys.