forked from udacity/AIND-Recognizer
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmy_recognizer.py
34 lines (31 loc) · 1.52 KB
/
my_recognizer.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
import warnings
from asl_data import SinglesData
def recognize(models: dict, test_set: SinglesData):
""" Recognize test word sequences from word models set
:param models: dict of trained models
{'SOMEWORD': GaussianHMM model object, 'SOMEOTHERWORD': GaussianHMM model object, ...}
:param test_set: SinglesData object
:return: (list, list) as probabilities, guesses
both lists are ordered by the test set word_id
probabilities is a list of dictionaries where each key a word and value is Log Liklihood
[{SOMEWORD': LogLvalue, 'SOMEOTHERWORD' LogLvalue, ... },
{SOMEWORD': LogLvalue, 'SOMEOTHERWORD' LogLvalue, ... },
]
guesses is a list of the best guess words ordered by the test set word_id
['WORDGUESS0', 'WORDGUESS1', 'WORDGUESS2',...]
"""
warnings.filterwarnings("ignore", category=DeprecationWarning)
probabilities = []
guesses = []
for word_id, word_sequence in test_set.get_all_Xlengths().items():
current_sequence_data, current_sequence_length = word_sequence
word_log_likelihoods = {}
for word, model in models.items():
try:
score = model.score(current_sequence_data, current_sequence_length)
word_log_likelihoods[word] = score
except:
word_log_likelihoods[word] = float("-inf")
probabilities.append(word_log_likelihoods)
guesses.append(max(word_log_likelihoods, key = word_log_likelihoods.get))
return probabilities, guesses