class ClassificationModelFingerprint(ClassificationModel):
"""
Class to run the survey response classification task with Coritcal.io
fingerprint encodings.
From the experiment runner, the methods expect to be fed one sample at a time.
"""
def __init__(self,
fingerprintType=EncoderTypes.word,
unionSparsity=0.20,
retinaScaling=1.0,
retina="en_associative",
apiKey=None,
k=1,
classifierMetric="rawOverlap",
cacheRoot=None,
**kwargs):
super(ClassificationModelFingerprint, self).__init__(**kwargs)
self.classifier = KNNClassifier(k=k,
distanceMethod=classifierMetric,
exact=False,
verbosity=self.verbosity-1)
# Need a valid API key for the Cortical.io encoder (see CioEncoder
# constructor for details).
if fingerprintType is (not EncoderTypes.document or not EncoderTypes.word):
raise ValueError("Invalid type of fingerprint encoding; see the "
"EncoderTypes class for eligble types.")
self.encoder = CioEncoder(retinaScaling=retinaScaling,
fingerprintType=fingerprintType,
unionSparsity=unionSparsity,
retina=retina,
apiKey=apiKey,
cacheDir=cacheRoot)
self.currentDocument = None
def trainToken(self, token, labels, sampleId, reset=0):
"""
Train the model with the given text token, associated labels, and
sampleId.
See base class for params and return type descriptions.
"""
if self.currentDocument is None:
# start of a new document
self.currentDocument = [token]
else:
# accumulate text for this document
self.currentDocument.append(token)
if reset == 1:
# all text accumulated, proceed w/ training on this document
document = " ".join(self.currentDocument)
bitmap = self.encoder.encode(document)["fingerprint"]["positions"]
if self.verbosity >= 2:
print "CioFP model training with: '{}'".format(document)
print "\tBitmap:", bitmap
for label in labels:
self.classifier.learn(
bitmap, label, isSparse=self.encoder.n, partitionId=sampleId)
self.currentDocument = None
def inferToken(self, token, reset=0, returnDetailedResults=False,
sortResults=True):
"""
Classify the token (i.e. run inference on the model with this document) and
return classification results and (optionally) a list of sampleIds and
distances. Repeated sampleIds are NOT removed from the results.
See base class for params and return type descriptions.
"""
if self.currentDocument is None:
# start of a new document
self.currentDocument = [token]
else:
# accumulate text for this document
self.currentDocument.append(token)
if reset == 0:
return numpy.zeros(self.numLabels), [], numpy.zeros(0)
# With reset=1, all text accumulated, proceed w/ classifying this document
document = " ".join(self.currentDocument)
bitmap = self.encoder.encode(document)["fingerprint"]["positions"]
densePattern =self.encoder.densifyPattern(bitmap)
(_, inferenceResult, dist, _) = self.classifier.infer(densePattern)
if self.verbosity >= 2:
print "CioFP model inference with: '{}'".format(document)
print "\tBitmap:", bitmap
print "\tInference result=", inferenceResult
print "\tDistances=", dist
self.currentDocument = None
# Figure out format of returned results
if not returnDetailedResults:
# Return non-detailed results.
return inferenceResult, None, None
if not sortResults:
idList = [self.classifier.getPartitionId(i) for i in xrange(len(dist))]
return inferenceResult, idList, dist
# Return sorted results
sortedIndices = dist.argsort()
idList = [self.classifier.getPartitionId(i) for i in sortedIndices]
sortedDistances = dist[sortedIndices]
return inferenceResult, idList, sortedDistances
def getEncoder(self):
"""
Returns the encoder instance for the model.
"""
return self.encoder
def getClassifier(self):
"""
Returns the classifier instance for the model.
"""
return self.classifier
class ClassificationModelFingerprint(ClassificationModel):
"""
Class to run the survey response classification task with Coritcal.io
fingerprint encodings.
From the experiment runner, the methods expect to be fed one sample at a time.
"""
def __init__(self,
fingerprintType=EncoderTypes.word,
unionSparsity=0.20,
retinaScaling=1.0,
retina="en_associative",
apiKey=None,
k=1,
classifierMetric="rawOverlap",
cacheRoot=None,
**kwargs):
super(ClassificationModelFingerprint, self).__init__(**kwargs)
self.classifier = KNNClassifier(k=k,
distanceMethod=classifierMetric,
exact=False,
verbosity=self.verbosity - 1)
# Need a valid API key for the Cortical.io encoder (see CioEncoder
# constructor for details).
if fingerprintType is (not EncoderTypes.document
or not EncoderTypes.word):
raise ValueError("Invalid type of fingerprint encoding; see the "
"EncoderTypes class for eligble types.")
self.encoder = CioEncoder(retinaScaling=retinaScaling,
fingerprintType=fingerprintType,
unionSparsity=unionSparsity,
retina=retina,
apiKey=apiKey,
cacheDir=cacheRoot)
self.currentDocument = None
def trainToken(self, token, labels, sampleId, reset=0):
"""
Train the model with the given text token, associated labels, and
sampleId.
See base class for params and return type descriptions.
"""
if self.currentDocument is None:
# start of a new document
self.currentDocument = [token]
else:
# accumulate text for this document
self.currentDocument.append(token)
if reset == 1:
# all text accumulated, proceed w/ training on this document
document = " ".join(self.currentDocument)
bitmap = self.encoder.encode(document)["fingerprint"]["positions"]
if self.verbosity >= 2:
print "CioFP model training with: '{}'".format(document)
print "\tBitmap:", bitmap
for label in labels:
self.classifier.learn(bitmap,
label,
isSparse=self.encoder.n,
partitionId=sampleId)
self.currentDocument = None
def inferToken(self,
token,
reset=0,
returnDetailedResults=False,
sortResults=True):
"""
Classify the token (i.e. run inference on the model with this document) and
return classification results and (optionally) a list of sampleIds and
distances. Repeated sampleIds are NOT removed from the results.
See base class for params and return type descriptions.
"""
if self.currentDocument is None:
# start of a new document
self.currentDocument = [token]
else:
# accumulate text for this document
self.currentDocument.append(token)
if reset == 0:
return numpy.zeros(self.numLabels), [], numpy.zeros(0)
# With reset=1, all text accumulated, proceed w/ classifying this document
document = " ".join(self.currentDocument)
bitmap = self.encoder.encode(document)["fingerprint"]["positions"]
densePattern = self.encoder.densifyPattern(bitmap)
(_, inferenceResult, dist, _) = self.classifier.infer(densePattern)
if self.verbosity >= 2:
print "CioFP model inference with: '{}'".format(document)
print "\tBitmap:", bitmap
print "\tInference result=", inferenceResult
print "\tDistances=", dist
self.currentDocument = None
# Figure out format of returned results
if not returnDetailedResults:
# Return non-detailed results.
return inferenceResult, None, None
if not sortResults:
idList = [
self.classifier.getPartitionId(i) for i in xrange(len(dist))
]
return inferenceResult, idList, dist
# Return sorted results
sortedIndices = dist.argsort()
idList = [self.classifier.getPartitionId(i) for i in sortedIndices]
sortedDistances = dist[sortedIndices]
return inferenceResult, idList, sortedDistances
def getEncoder(self):
"""
Returns the encoder instance for the model.
"""
return self.encoder
def getClassifier(self):
"""
Returns the classifier instance for the model.
"""
return self.classifier
