![When running the code below I am getting some errors (see image). The line, in the code below,
that the error is coming from will be highlighted in bold . Any help fixing it would be
appreciated.
import numpy as np
import tensorflow as tf
import matplotlib.pyplot as plt
#1) Generate the synthetic data using the following Python code snippet.
# Generate synthetic data
N = 100
# Zeros form a Gaussian centered at (-1, -1)
x_zeros = np.random.multivariate_normal(mean=np.array((-1, -1)), cov=.1*np.eye(2),
size=(N//2,))
y_zeros = np.zeros((N//2,))
# Ones form a Gaussian centered at (1, 1)
x_ones = np.random.multivariate_normal(mean=np.array((1, 1)), cov=.1*np.eye(2),
size=(N//2,))
y_ones = np.ones((N//2,))
x_np = np.vstack([x_zeros, x_ones])
y_np = np.concatenate([y_zeros, y_ones])
# Plot x_zeros and x_ones on the same graph
plt.scatter(x_zeros[:,0], x_zeros[:,1], label='class 0')
plt.scatter(x_ones[:,0], x_ones[:,1], label='class 1')
plt.legend()
plt.show()](https://image.slidesharecdn.com/whenrunningthecodebelowiamgettingsomeerrorsseeimage-the-230220161107-c5693aae/85/When-running-the-code-below-I-am-getting-some-errors-see-image-The-docx-1-320.jpg)
![train_writer = tf.compat.v1.summary.FileWriter('logistic-train',
tf.compat.v1.get_default_graph())
#4) Train the model, get the weights, and make predictions.
with tf.compat.v1.Session() as sess:
# Initialize all variables
sess.run(tf.compat.v1.global_variables_initializer())
# Train the model for 100 epochs
for epoch in range(100):
# Run the train_op
_, summary, loss = sess.run([train_op, merged, l])
print("Epoch:", epoch, "Loss:", loss)
# Write the summary for TensorBoard
train_writer.add_summary(summary, epoch)
# Get the weights and biases
W_final, b_final = sess.run([W, b])
# Get the predictions
y_pred_np = sess.run(y_pred)
#5) Plot the predicted outputs on top of the data.
plt.scatter(x_np[y_pred_np==0,0], x_np[y_pred_np==0,1], label='class 0')
plt.scatter(x_np[y_pred_np==1,0], x_np[y_pred_np==1,1], label='class 1')
plt.legend()
plt.show()
import numpy as np](https://image.slidesharecdn.com/whenrunningthecodebelowiamgettingsomeerrorsseeimage-the-230220161107-c5693aae/85/When-running-the-code-below-I-am-getting-some-errors-see-image-The-docx-3-320.jpg)
![import tensorflow as tf
import matplotlib.pyplot as plt
#1) Generate the synthetic data using the following Python code snippet.
# Generate synthetic data
N = 100
# Zeros form a Gaussian centered at (-1, -1)
x_zeros = np.random.multivariate_normal(mean=np.array((-1, -1)),
cov=.1*np.eye(2), size=(N//2,))
y_zeros = np.zeros((N//2,))
# Ones form a Gaussian centered at (1, 1)
x_ones = np.random.multivariate_normal(mean=np.array((1, 1)),
cov=.1*np.eye(2), size=(N//2,))
y_ones = np.ones((N//2,))
x_np = np.vstack([x_zeros, x_ones])
y_np = np.concatenate([y_zeros, y_ones])
# Plot x_zeros and x_ones on the same graph
plt.scatter(x_zeros[:,0], x_zeros[:,1], label='class 0')
plt.scatter(x_ones[:,0], x_ones[:,1], label='class 1')
plt.legend()
plt.show()
#3) Generate a TensorFlow graph.
with tf.name_scope("placeholders"):
x = tf.constant(x_np, dtype=tf.float32)](https://image.slidesharecdn.com/whenrunningthecodebelowiamgettingsomeerrorsseeimage-the-230220161107-c5693aae/85/When-running-the-code-below-I-am-getting-some-errors-see-image-The-docx-4-320.jpg)
![with tf.compat.v1.Session() as sess:
# Initialize all variables
sess.run(tf.compat.v1.global_variables_initializer())
# Train the model for 100 epochs
for epoch in range(100):
# Run the train_op
_, summary, loss = sess.run([train_op, merged, l])
print("Epoch:", epoch, "Loss:", loss)
# Write the summary for TensorBoard
train_writer.add_summary(summary, epoch)
# Get the weights and biases
W_final, b_final = sess.run([W, b])
# Get the predictions
y_pred_np = sess.run(y_pred)
#5) Plot the predicted outputs on top of the data.
plt.scatter(x_np[y_pred_np==0,0], x_np[y_pred_np==0,1], label='class 0')
plt.scatter(x_np[y_pred_np==1,0], x_np[y_pred_np==1,1], label='class 1')
plt.legend()
plt.show()](https://image.slidesharecdn.com/whenrunningthecodebelowiamgettingsomeerrorsseeimage-the-230220161107-c5693aae/85/When-running-the-code-below-I-am-getting-some-errors-see-image-The-docx-6-320.jpg)
When running the code below I am getting some errors (see image)- The.docx
- 1. When running the code below I am getting some errors (see image). The line, in the code below, that the error is coming from will be highlighted in bold . Any help fixing it would be appreciated. import numpy as np import tensorflow as tf import matplotlib.pyplot as plt #1) Generate the synthetic data using the following Python code snippet. # Generate synthetic data N = 100 # Zeros form a Gaussian centered at (-1, -1) x_zeros = np.random.multivariate_normal(mean=np.array((-1, -1)), cov=.1*np.eye(2), size=(N//2,)) y_zeros = np.zeros((N//2,)) # Ones form a Gaussian centered at (1, 1) x_ones = np.random.multivariate_normal(mean=np.array((1, 1)), cov=.1*np.eye(2), size=(N//2,)) y_ones = np.ones((N//2,)) x_np = np.vstack([x_zeros, x_ones]) y_np = np.concatenate([y_zeros, y_ones]) # Plot x_zeros and x_ones on the same graph plt.scatter(x_zeros[:,0], x_zeros[:,1], label='class 0') plt.scatter(x_ones[:,0], x_ones[:,1], label='class 1') plt.legend() plt.show()
- 2. #3) Generate a TensorFlow graph. with tf.name_scope("placeholders"): x = tf.constant(x_np, dtype=tf.float32) y = tf.constant(y_np, dtype=tf.float32) with tf.name_scope("weights"): W = tf.Variable(tf.random.normal((2, 1))) b = tf.Variable(tf.random.normal((1,))) with tf.name_scope("prediction"): y_logit = tf.squeeze(tf.matmul(x, W) + b) # the sigmoid gives the class probability of 1 y_one_prob = tf.sigmoid(y_logit) # Rounding P(y=1) will give the correct prediction. y_pred = tf.round(y_one_prob) with tf.name_scope("loss"): # Compute the cross-entropy term for each datapoint entropy = tf.nn.sigmoid_cross_entropy_with_logits(logits=y_logit, labels=y) # Sum all contributions l = tf.reduce_sum(entropy) with tf.name_scope("optim"): train_op = tf.compat.v1.train.AdamOptimizer(.01).minimize(l) with tf.name_scope("summaries"): tf.compat.v1.summary.scalar("loss", l) merged = tf.compat.v1.summary.merge_all()
- 3. train_writer = tf.compat.v1.summary.FileWriter('logistic-train', tf.compat.v1.get_default_graph()) #4) Train the model, get the weights, and make predictions. with tf.compat.v1.Session() as sess: # Initialize all variables sess.run(tf.compat.v1.global_variables_initializer()) # Train the model for 100 epochs for epoch in range(100): # Run the train_op _, summary, loss = sess.run([train_op, merged, l]) print("Epoch:", epoch, "Loss:", loss) # Write the summary for TensorBoard train_writer.add_summary(summary, epoch) # Get the weights and biases W_final, b_final = sess.run([W, b]) # Get the predictions y_pred_np = sess.run(y_pred) #5) Plot the predicted outputs on top of the data. plt.scatter(x_np[y_pred_np==0,0], x_np[y_pred_np==0,1], label='class 0') plt.scatter(x_np[y_pred_np==1,0], x_np[y_pred_np==1,1], label='class 1') plt.legend() plt.show() import numpy as np
- 4. import tensorflow as tf import matplotlib.pyplot as plt #1) Generate the synthetic data using the following Python code snippet. # Generate synthetic data N = 100 # Zeros form a Gaussian centered at (-1, -1) x_zeros = np.random.multivariate_normal(mean=np.array((-1, -1)), cov=.1*np.eye(2), size=(N//2,)) y_zeros = np.zeros((N//2,)) # Ones form a Gaussian centered at (1, 1) x_ones = np.random.multivariate_normal(mean=np.array((1, 1)), cov=.1*np.eye(2), size=(N//2,)) y_ones = np.ones((N//2,)) x_np = np.vstack([x_zeros, x_ones]) y_np = np.concatenate([y_zeros, y_ones]) # Plot x_zeros and x_ones on the same graph plt.scatter(x_zeros[:,0], x_zeros[:,1], label='class 0') plt.scatter(x_ones[:,0], x_ones[:,1], label='class 1') plt.legend() plt.show() #3) Generate a TensorFlow graph. with tf.name_scope("placeholders"): x = tf.constant(x_np, dtype=tf.float32)
- 5. y = tf.constant(y_np, dtype=tf.float32) with tf.name_scope("weights"): W = tf.Variable(tf.random.normal((2, 1))) b = tf.Variable(tf.random.normal((1,))) with tf.name_scope("prediction"): y_logit = tf.squeeze(tf.matmul(x, W) + b) # the sigmoid gives the class probability of 1 y_one_prob = tf.sigmoid(y_logit) # Rounding P(y=1) will give the correct prediction. y_pred = tf.round(y_one_prob) with tf.name_scope("loss"): # Compute the cross-entropy term for each datapoint entropy = tf.nn.sigmoid_cross_entropy_with_logits(logits=y_logit, labels=y) # Sum all contributions l = tf.reduce_sum(entropy) with tf.name_scope("optim"): train_op = tf.compat.v1.train.AdamOptimizer(.01).minimize(l) with tf.name_scope("summaries"): tf.compat.v1.summary.scalar("loss", l) merged = tf.compat.v1.summary.merge_all() train_writer = tf.compat.v1.summary.FileWriter('logistic-train', tf.compat.v1.get_default_graph()) #4) Train the model, get the weights, and make predictions.
- 6. with tf.compat.v1.Session() as sess: # Initialize all variables sess.run(tf.compat.v1.global_variables_initializer()) # Train the model for 100 epochs for epoch in range(100): # Run the train_op _, summary, loss = sess.run([train_op, merged, l]) print("Epoch:", epoch, "Loss:", loss) # Write the summary for TensorBoard train_writer.add_summary(summary, epoch) # Get the weights and biases W_final, b_final = sess.run([W, b]) # Get the predictions y_pred_np = sess.run(y_pred) #5) Plot the predicted outputs on top of the data. plt.scatter(x_np[y_pred_np==0,0], x_np[y_pred_np==0,1], label='class 0') plt.scatter(x_np[y_pred_np==1,0], x_np[y_pred_np==1,1], label='class 1') plt.legend() plt.show()