class TestMetrics(TestCase):
def setUp(self):
self.m = Metrics()
def test_jaccard_same_len(self):
with self.assertRaises(ValueError):
self.m.jaccard_vectors(
[0, 1],
[0, 1, 2, 3]
)
def test_jaccard_empty(self):
e = self.m.jaccard_vectors([],[])
self.assertEqual(e,1)
def test_jaccard_int(self):
e = self.m.jaccard_vectors(
[0, 2, 1, 3],
[0, 1, 2, 3]
)
self.assertEqual(e,0.75)
def test_jaccard_bool(self):
e = self.m.jaccard_vectors(
[False, False, True, True, True ],
[False, True , True, True, False]
)
self.assertEqual(e,0.4)
def test_euclid_same_len(self):
with self.assertRaises(ValueError):
self.m.euclid_vectors(
[0, 1, 2, 3],
[0, 1]
)
def test_euclid(self):
e = self.m.euclid_vectors([1,1],[4,5])
self.assertEqual(e,5)
def test_cos_same_len(self):
with self.assertRaises(ValueError):
self.m.cos_vectors(
[0, 1, 2],
[1, 1]
)
def test_cos_0(self):
c = self.m.cos_vectors([1,0,1],[0,1,0])
self.assertEqual(round(c,5),float(0))
def test_cos_1(self):
c = self.m.cos_vectors([1,1,1],[1,1,1])
self.assertEqual(round(c,5),float(1))
class TestMetrics(unittest.TestCase):
def setUp(self):
self.m = Metrics()
def test_metrics(self):
e = self.m.euclid_vectors([1, 1], [4, 5])
self.assertEqual(e, 5)
c = self.m.cos_vectors([1, 1, 1], [1, 1, 1])
self.assertEqual(round(c, 5), float(1))
c = self.m.cos_vectors([1, 0, 1], [0, 1, 0])
self.assertEqual(round(c, 5), float(0))
class TestMetrics(unittest.TestCase):
def setUp(self):
self.m = Metrics()
def test_metrics(self):
e = self.m.euclid_vectors([1,1],[4,5])
self.assertEqual(e,5)
c = self.m.cos_vectors([1,1,1],[1,1,1])
self.assertEqual(round(c,5),float(1))
c = self.m.cos_vectors([1,0,1],[0,1,0])
self.assertEqual(round(c,5),float(0))
class QA:
def __init__(self):
self.file_name = 'qa.txt'
self.qa_list = {}
self.qa_id = 0
self.prep = Preprocessor()
self.mx = Matrix()
self.metric = Metrics()
def randomize(self, a):
for i in range(len(a)):
a[i] = random.randint(0,1)
def readfile(self):
fd = open(self.file_name,'r')
for line in fd.readlines():
line = line.strip().lower().split(':')
if len(line) != 2:
continue
elif line[0] == 'q':
q_line = ' '.join(line[1:])
self.qa_id += 1
self.qa_list[self.qa_id] = {'q': q_line, 'a': ''}
terms = self.prep.ngram_tokenizer(text=q_line)
self.mx.add_doc(doc_id=self.qa_id, doc_terms=terms,
frequency=True, do_padding=True)
elif line[0] == 'a':
a_line = ' '.join(line[1:])
self.qa_list[self.qa_id]['a'] = a_line
#print 'Number of read questions and answers:', len(self.mx.docs)
#print 'Number of read terms', len(self.mx.terms)
def ask(self, q=''):
q_id = 0
q_distance = 99999
terms = self.prep.ngram_tokenizer(text=q)
q_vector = self.mx.query_to_vector(terms, frequency=False)
if sum(q_vector) == 0:
self.randomize(q_vector)
for doc in self.mx.docs:
distance = self.metric.euclid_vectors(doc['terms'], q_vector)
if distance < q_distance:
q_distance = distance
q_id = doc['id']
print 'Tarek:', self.qa_list[q_id]['a']
