d = distance(point, cluster["mean"])
ds.append(d)
minId = ds.index(min(ds))
if point.clusterId != minId:
self.clusters[point.clusterId]["cluster"].remove(point)
self.clusters[minId]["cluster"].add(point)
point.clusterId = minId
stop = False
self._reCalculateMean()
if __name__ == "__main__":
ks, ps, fs = [], [], []
for k in xrange(5, 26):
points = readPoints("dataset1.dat", "dataset1-label.dat")
kmeans = KmeansClustering(points, k)
kmeans.clustering()
ks.append(k)
ps.append(purity(kmeans.clusters, kmeans.points))
fs.append(fscore(kmeans.clusters, kmeans.points))
print "\t".join([str(i) for i in ks])
print "\t".join([str(i) for i in ps])
print "\t".join([str(i) for i in fs])
cluster['cluster'].add(p)
self.clusters.append(cluster)
if __name__ == '__main__':
es, ps, fs = [], [], []
for i in xrange(1, 10):
points = readPoints('dataset2.dat', 'dataset2-label.dat')
dbscan = DBscanClustering(points, i, 100)
dbscan.clustering()
es.append(i)
ps.append(purity(dbscan.clusters, dbscan.points))
fs.append(fscore(dbscan.clusters, dbscan.points))
print '\t'.join([str(i) for i in es])
print '\t'.join([str(i) for i in ps])
print '\t'.join([str(i) for i in fs])
print "\n\n"
ms, ps, fs = [], [], []
for i in xrange(10, 200, 10):
points = readPoints('dataset2.dat', 'dataset2-label.dat')
dbscan = DBscanClustering(points, 6, i)
dbscan.clustering()
ms.append(i)
def main(unused_argv):
train_dataset, validate_dataset, test_dataset = input.input(
shuffle_files=False)
#Text information
info = tf.constant([
"Batch size = %s" % f.FLAGS.batch_size,
"Epochs = %s" % f.FLAGS.num_epochs,
"Learning rate = %s" % f.FLAGS.learning_rate,
"Batch normalization = No",
"Window size = %s" % f.FLAGS.window_size, "Shuffle Files = No",
"CNN model = %s" % f.FLAGS.cnn_model, "Shuffle Samples = YES"
])
with tf.name_scope('input'):
x = tf.placeholder(tf.float32, [
None, input.SAMPLE_DEPTH, input.SAMPLE_HEIGHT, input.SAMPLE_WIDTH
])
y_ = tf.placeholder(tf.float32, [None, 2])
dropout_rate = tf.placeholder(tf.float32)
is_training = tf.placeholder(tf.bool)
with tf.name_scope('logits'):
if f.FLAGS.cnn_model == "lenet5":
logits = lenet5.model_fn(sample_input=x,
is_training=is_training,
summaries=summaries)
with tf.name_scope('loss'):
cross_entropy = tf.nn.softmax_cross_entropy_with_logits(labels=y_,
logits=logits)
mean_cross_entropy_loss = tf.reduce_mean(cross_entropy)
loss_summ = tf.summary.scalar('Mean_cross_entropy_loss',
mean_cross_entropy_loss)
summaries['train'].append(loss_summ)
#summaries['validate'].append(loss_summ)
with tf.name_scope('adam_optimizer'):
optimizer = tf.train.AdamOptimizer(
f.FLAGS.learning_rate).minimize(mean_cross_entropy_loss)
with tf.name_scope('accuracy'):
preds = tf.argmax(logits, 1)
correct_preds = tf.argmax(y_, 1)
equal = tf.equal(preds, correct_preds)
training_accuracy_op = tf.reduce_mean(tf.cast(equal, tf.float32))
summaries['train'].append(
tf.summary.scalar('Training_Accuracy', training_accuracy_op))
with tf.name_scope('Evaluation_Metrics'):
tp_op = evaluate.tp(logits=logits, labels=y_)
fp_op = evaluate.fp(logits=logits, labels=y_)
tn_op = evaluate.tn(logits=logits, labels=y_)
fn_op = evaluate.fn(logits=logits, labels=y_)
tp_sum = tf.placeholder(tf.float32)
tn_sum = tf.placeholder(tf.float32)
fp_sum = tf.placeholder(tf.float32)
fn_sum = tf.placeholder(tf.float32)
precision_op = evaluate.precision(tp=tp_sum,
fp=fp_sum,
tn=tn_sum,
fn=fn_sum)
accuracy_op = evaluate.accuracy(tp=tp_sum,
fp=fp_sum,
tn=tn_sum,
fn=fn_sum)
recall_op = evaluate.recall(tp=tp_sum, fp=fp_sum, tn=tn_sum, fn=fn_sum)
fscore_op = evaluate.fscore(tp=tp_sum, fp=fp_sum, tn=tn_sum, fn=fn_sum)
precision_summ = tf.summary.scalar('Precision', precision_op)
accuracy_summ = tf.summary.scalar('Accuracy', accuracy_op)
recall_summ = tf.summary.scalar('Recall', recall_op)
fscore_summ = tf.summary.scalar('Fscore', fscore_op)
summaries['validate'].append(accuracy_summ)
summaries['validate'].append(precision_summ)
summaries['validate'].append(recall_summ)
summaries['validate'].append(fscore_summ)
summaries['test'].append(accuracy_summ)
summaries['test'].append(precision_summ)
summaries['test'].append(recall_summ)
summaries['test'].append(fscore_summ)
print("Saving graph to %s" % f.FLAGS.log_dir)
train_writer = tf.summary.FileWriter(f.FLAGS.log_dir + "/train")
validate_writer = tf.summary.FileWriter(f.FLAGS.log_dir + "/validate")
test_writer = tf.summary.FileWriter(f.FLAGS.log_dir + "/test")
train_writer.add_graph(tf.get_default_graph())
train_summaries = tf.summary.merge(summaries['train'])
validate_summaries = tf.summary.merge(summaries['validate'])
test_summaries = tf.summary.merge(summaries['test'])
with tf.Session() as sess:
train_writer.add_summary(sess.run(tf.summary.text("Information",
info)))
train_iter = train_dataset.make_initializable_iterator()
train_next_elem = train_iter.get_next()
sess.run(tf.global_variables_initializer())
global_step = 0
display_freq = 10
validate_freq = 50
test_freq = 50
for epoch in range(1, f.FLAGS.num_epochs + 1):
sess.run(train_iter.initializer)
step_time = 0.0
fetch_time = 0.0
while True:
try:
a = time.time()
global_step += 1
sample, label = sess.run(train_next_elem)
fetch_time += time.time() - a
#print (sample.shape, label.shape)
#print (label)
#for s in sample[0][0]:
# print (s)
a = time.time()
_, summ = sess.run([optimizer, train_summaries],
feed_dict={
x: sample,
y_: label,
dropout_rate: 0.5,
is_training: True
})
train_writer.add_summary(summ, global_step)
step_time += time.time() - a
except tf.errors.OutOfRangeError:
break
if global_step % display_freq == 0:
batch_loss, batch_accuracy = sess.run(
[mean_cross_entropy_loss, training_accuracy_op],
feed_dict={
x: sample,
y_: label,
dropout_rate: 1.0,
is_training: False
})
print(
"Epoch {:3}\t Step {:5}:\t Loss={:.3f}, \tTraining Accuracy={:.5f} \tStep Time {:4.2f}m, Fetch Time {:4.2f}m"
.format(epoch, global_step, batch_loss, batch_accuracy,
step_time / 60, fetch_time / 60))
step_time = 0.0
fetch_time = 0.0
#Validate and test after each epoch
val_it = validate_dataset.make_one_shot_iterator()
val_next_elem = val_it.get_next()
tot_tp, tot_tn, tot_fp, tot_fn = 0, 0, 0, 0
while True:
try:
sample, label = sess.run(val_next_elem)
tp, fp, tn, fn = sess.run(
[tp_op, fp_op, tn_op, fn_op],
feed_dict={
x: sample,
y_: label,
dropout_rate: 1.0,
is_training: False
})
except tf.errors.OutOfRangeError:
break
tot_tp += tp
tot_fp += fp
tot_fn += fn
tot_tn += tn
precision, recall, accuracy, fscore, summ = sess.run([
precision_op, recall_op, accuracy_op, fscore_op,
validate_summaries
],
feed_dict={
tp_sum:
tot_tp,
tn_sum:
tot_tn,
fp_sum:
tot_fp,
fn_sum:
tot_fn
})
validate_writer.add_summary(summ, global_step)
print("Epoch %d, Step %d" % (epoch, global_step))
print("=" * 10, "Validating Results", "=" * 10)
print("TP: %g\nTN: %g\nFP: %g\nFN: %g" %
(tot_tp, tot_tn, tot_fp, tot_fn))
print(
"\tPrecision: %g\n\tRecall: %g\n\tF1_score: %g\n\tAccuracy: %g"
% (precision, recall, fscore, accuracy))
test_it = test_dataset.make_one_shot_iterator()
test_next_elem = test_it.get_next()
tot_tp, tot_tn, tot_fp, tot_tn = 0, 0, 0, 0
while True:
try:
sample, label = sess.run(test_next_elem)
tp, fp, tn, fn = sess.run(
[tp_op, fp_op, tn_op, fn_op],
feed_dict={
x: sample,
y_: label,
dropout_rate: 1.0,
is_training: False
})
except tf.errors.OutOfRangeError:
break
tot_tp += tp
tot_fp += fp
tot_fn += fn
tot_tn += tn
precision, recall, accuracy, fscore, summ = sess.run([
precision_op, recall_op, accuracy_op, fscore_op, test_summaries
],
feed_dict={
tp_sum:
tot_tp,
tn_sum:
tot_tn,
fp_sum:
tot_fp,
fn_sum:
tot_fn
})
test_writer.add_summary(summ, global_step)
print("=" * 10, "Testing Results", "=" * 10)
print("TP: %g\nTN: %g\nFP: %g\nFN: %g" %
(tot_tp, tot_tn, tot_fp, tot_fn))
print(
"\tPrecision: %g\n\tRecall: %g\n\tF1_score: %g\n\tAccuracy: %g"
% (precision, recall, fscore, accuracy))
print("=" * 10, "===============", "=" * 10)
