fix: QA/Infosec update and python to chinese

This commit is contained in:
Oliver Eyton-Williams
2020-08-13 12:00:20 +02:00
committed by Mrugesh Mohapatra
parent 2c78402837
commit 1cfa09adc4
861 changed files with 6847 additions and 0 deletions

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72da6
title: Conclusion
challengeType: 11
isHidden: false
videoId: LMNub5frQi4
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Most people that are experts in AI or machine learning usually...:
answers:
- |
have one specialization.
- |
have many specializations.
- |
have a deep understanding of many different frameworks.
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d99
title: 'Convolutional Neural Networks: Evaluating the Model'
challengeType: 11
isHidden: false
videoId: eCATNvwraXg
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What is **not** a good way to increase the accuracy of a convolutional neural network?
answers:
- |
Augmenting the data you already have.
- |
Using a pre-trained model.
- |
Using your test data to retrain the model.
solution: 3
```
</section>

View File

@ -0,0 +1,51 @@
---
id: 5e8f2f13c4cdbe86b5c72d9a
title: 'Convolutional Neural Networks: Picking a Pretrained Model'
challengeType: 11
isHidden: false
videoId: h1XUt1AgIOI
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks below to use Google's pre-trained MobileNet V2 model as a base for a convolutional neural network:
```py
base_model = tf.__A__.applications.__B__(input_shape=(160, 160, 3),
include_top=__C__,
weights='imagenet'
)
```
answers:
- |
A: `keras`
B: `MobileNetV2`
C: `False`
- |
A: `Keras`
B: `MobileNetV2`
C: `True`
- |
A: `keras`
B: `mobile_net_v2`
C: `False`
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d97
title: 'Convolutional Neural Networks: The Convolutional Layer'
challengeType: 11
isHidden: false
videoId: LrdmcQpTyLw
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What are the three main properties of each convolutional layer?
answers:
- |
Input size, the number of filters, and the sample size of the filters.
- |
Input size, input dimensions, and the color values of the input.
- |
Input size, input padding, and stride.
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d96
title: Convolutional Neural Networks
challengeType: 11
isHidden: false
videoId: _1kTP7uoU9E
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Dense neural networks analyze input on a global scale and recognize patterns in specific areas. Convolutional neural networks...:
answers:
- |
also analyze input globally and extract features from specific areas.
- |
do not work well for image classification or object detection.
- |
scan through the entire input a little at a time and learn local patterns.
solution: 3
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d8e
title: 'Core Learning Algorithms: Building the Model'
challengeType: 11
isHidden: false
videoId: 5wHw8BTd2ZQ
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What kind of estimator/model does TensorFlow recommend using for classification?
answers:
- |
`LinearClassifier`
- |
`DNNClassifier`
- |
`BoostedTreesClassifier`
solution: 2
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d8d
title: 'Core Learning Algorithms: Classification'
challengeType: 11
isHidden: false
videoId: qFF7ZQNvK9E
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What is classification?
answers:
- |
The process of separating data points into different classes.
- |
Predicting a numeric value or forecast based on independent and dependent variables.
- |
None of the above.
solution: 1
```
</section>

View File

@ -0,0 +1,36 @@
---
id: 5e8f2f13c4cdbe86b5c72d8f
title: 'Core Learning Algorithms: Clustering'
challengeType: 11
isHidden: false
videoId: 8sqIaHc9Cz4
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Which of the following steps is **not** part of the K-Means algorithm?
answers:
- |
Randomly pick K points to place K centeroids.
- |
Assign each K point to the closest K centeroid.
- |
Move each K centeroid into the middle of all of their data points.
- |
Shuffle the K points so they're redistributed randomly.
- |
Reassign each K point to the closest K centeroid.
solution: 4
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d90
title: 'Core Learning Algorithms: Hidden Markov Models'
challengeType: 11
isHidden: false
videoId: IZg24y4wEPY
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What makes a Hidden Markov model different than linear regression or classification?
answers:
- |
It uses probability distributions to predict future events or states.
- |
It analyzes the relationship between independent and dependent variables to make predictions.
- |
It separates data points into separate categories.
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d8c
title: 'Core Learning Algorithms: The Training Process'
challengeType: 11
isHidden: false
videoId: _cEwvqVoBhI
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What are epochs?
answers:
- |
The number of times the model will see the same data.
- |
A type of graph.
- |
The number of elements you feed to the model at once.
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d8b
title: 'Core Learning Algorithms: Training and Testing Data'
challengeType: 11
isHidden: false
videoId: wz9J1slsi7I
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What is categorical data?
answers:
- |
Another term for one-hot encoding.
- |
Any data that is not numeric.
- |
Any data that is represented numerically.
solution: 2
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d91
title: 'Core Learning Algorithms: Using Probabilities to make Predictions'
challengeType: 11
isHidden: false
videoId: fYAYvLUawnc
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What TensorFlow module should you import to implement `.HiddenMarkovModel()`?
answers:
- |
`tensorflow.keras`
- |
`tensorflow_gpu`
- |
`tensorflow_probability`
solution: 3
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d8a
title: 'Core Learning Algorithms: Working with Data'
challengeType: 11
isHidden: false
videoId: u85IOSsJsPI
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What does the pandas `.head()` function do?
answers:
- |
Returns the number of entries in a data frame.
- |
Returns the number of columns in a data frame.
- |
By default, shows the first five rows or entries in a data frame.
solution: 3
```
</section>

View File

@ -0,0 +1,36 @@
---
id: 5e8f2f13c4cdbe86b5c72d89
title: Core Learning Algorithms
challengeType: 11
isHidden: false
videoId: u5lZURgcWnU
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Which type of analysis would be best suited for the following problem?:
You have the average temperature in the month of March for the last 100 years. Using this data, you want to predict the average temperature in the month of March 5 years from now.
answers:
- |
Multiple regression
- |
Correlation
- |
Decision tree
- |
Linear regression
solution: 4
```
</section>

View File

@ -0,0 +1,54 @@
---
id: 5e8f2f13c4cdbe86b5c72d98
title: Creating a Convolutional Neural Network
challengeType: 11
isHidden: false
videoId: kfv0K8MtkIc
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks below to complete the architecture for a convolutional neural network:
```py
model = models.__A__()
model.add(layers.__B__(32, (3, 3), activation='relu', input_shape=(32, 32, 3)))
model.add(layers.__C__(2, 2))
model.add(layers.__B__(64, (3, 3), activation='relu'))
model.add(layers.__C__(2, 2))
model.add(layers.__B__(32, (3, 3), activation='relu'))
model.add(layers.__C__(2, 2))
```
answers:
- |
A: `Sequential`
B: `add`
C: `Wrapper`
- |
A: `keras`
B: `Cropping2D`
C: `AlphaDropout`
- |
A: `Sequential`
B: `Conv2D`
C: `MaxPooling2D`
solution: 3
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d87
title: 'Introduction: Machine Learning Fundamentals'
challengeType: 11
isHidden: false
videoId: KwL1qTR5MT8
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Which statement below is **false**?
answers:
- |
Neural networks are modeled after the way the human brain works.
- |
Computer programs that play tic-tac-toe or chess against human players are examples of simple artificial intelligence.
- |
Machine learning is a subset of artificial intelligence.
solution: 1
```
</section>

View File

@ -0,0 +1,36 @@
---
id: 5e8f2f13c4cdbe86b5c72d88
title: Introduction to TensorFlow
challengeType: 11
isHidden: false
videoId: r9hRyGGjOgQ
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Which of the following is **not** a type of tensor?
answers:
- |
Variable
- |
Flowing
- |
Placeholder
- |
SparseTensor
- |
Constant
solution: 2
```
</section>

View File

@ -0,0 +1,64 @@
---
id: 5e8f2f13c4cdbe86b5c72da1
title: 'Natural Language Processing With RNNs: Building the Model'
challengeType: 11
isHidden: false
videoId: 32WBFS7lfsw
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks below to complete the `build_model` function:
```py
def build_mode(vocab_size, embedding_dim, rnn_units, batch_size):
model = tf.keras.Sequential([
tf.keras.layers.Embedding(vocab_size,
embedding_dim,
batch_input_shape=[batch_size, None]),
tf.keras.layers.__A__(rnn_units,
return_sequences=__B__,
recurrent_initializer='glorot_uniform),
tf.keras.layers.Dense(__C__)
])
__D__
```
answers:
- |
A: `ELU`
B: `True`
C: `vocab_size`
D: `return model`
- |
A: `LSTM`
B: `False`
C: `batch_size`
D: `return model`
- |
A: `LSTM`
B: `True`
C: `vocab_size`
D: `return model`
solution: 3
```
</section>

View File

@ -0,0 +1,42 @@
---
id: 5e8f2f13c4cdbe86b5c72da0
title: 'Natural Language Processing With RNNs: Create a Play Generator'
challengeType: 11
isHidden: false
videoId: j5xsxjq_Xk8
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks below to create the training examples for the RNN:
```py
char_dataset = tf.data.__A__.__B__(text_as_int)
```
answers:
- |
A: `DataSet`
B: `from_tensor_slices`
- |
A: `data`
B: `from_tensors`
- |
A: `DataSet`
B: `from_generator`
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d9f
title: 'Natural Language Processing With RNNs: Making Predictions'
challengeType: 11
isHidden: false
videoId: WO1hINnBj20
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Before you make a prediction with your own review, you should...:
answers:
- |
decode the training dataset and compare the results to the test data.
- |
use the encodings from the training dataset to encode your review.
- |
assign random values between 0 and the maximum number of vocabulary in your dataset to each word in your review.
solution: 2
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d9c
title: 'Natural Language Processing With RNNs: Part 2'
challengeType: 11
isHidden: false
videoId: mUU9YXOFbZg
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Word embeddings are...:
answers:
- |
an unordered group of encoded words that describes the frequency of words in a given document.
- |
a group of encoded words that preserves the original order of the words in a given document.
- |
a vectorized representation of words in a given document that places words with similar meanings near each other.
solution: 3
```
</section>

View File

@ -0,0 +1,34 @@
---
id: 5e8f2f13c4cdbe86b5c72d9d
title: 'Natural Language Processing With RNNs: Recurring Neural Networks'
challengeType: 11
isHidden: false
videoId: bX5681NPOcA
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What is true about Recurrent Neural Networks?
answers:
- |
1: They are a type of feed-forward neural network.
- |
2: They maintain an internal memory/state of the input that was already processed.
- |
3: RNN's contain a loop and process one piece of input at a time.
- |
4: Both 2 and 3.
solution: 4
```
</section>

View File

@ -0,0 +1,52 @@
---
id: 5e8f2f13c4cdbe86b5c72d9e
title: 'Natural Language Processing With RNNs: Sentiment Analysis'
challengeType: 11
isHidden: false
videoId: lYeLtu8Nq7c
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks below to create the model for the RNN:
```py
model = __A__.keras.Sequential([
__A__.keras.layers.__B__(88584, 32),
__A__.keras.layers.__C__(32),
__A__.keras.layers.DENSE(1, activation='sigmoid')
])
```
answers:
- |
A: `tensor_flow`
B: `embedding`
C: `LSTM`
- |
A: `tf`
B: `Embedding`
C: `AlphaDropout`
- |
A: `tf`
B: `Embedding`
C: `LSTM`
solution: 3
```
</section>

View File

@ -0,0 +1,56 @@
---
id: 5e8f2f13c4cdbe86b5c72da2
title: 'Natural Language Processing With RNNs: Training the Model'
challengeType: 11
isHidden: false
videoId: hEUiK7j9UI8
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks below to save your model's checkpoints in the `./checkpoints` directory and call the latest checkpoint for training:
```py
checkpoint_dir = __A__
checkpoint_prefix = os.path.join(checkpoint_dir, 'ckpt_{epoch}')
checkpoint_callback = tf.keras.callbacks.__B__(
filepath=checkpoint_prefix,
save_weights_only=True
)
history = model.fit(data, epochs=2, callbacks=[__C__])
```
answers:
- |
A: `'./training_checkpoints'`
B: `ModelCheckpoint`
C: `checkpoint_prefix`
- |
A: `'./checkpoints'`
B: `ModelCheckpoint`
C: `checkpoint_callback`
- |
A: `'./checkpoints'`
B: `BaseLogger`
C: `checkpoint_callback`
solution: 2
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d9b
title: Natural Language Processing With RNNs
challengeType: 11
isHidden: false
videoId: ZyCaF5S-lKg
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Natural Language Processing is a branch of artificial intelligence that...:
answers:
- |
deals with how computers understand and process natural/human languages.
- |
translates image data into natural/human languages.
- |
is focused on translating computer languages into natural/human languages.
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d93
title: 'Neural Networks: Activation Functions'
challengeType: 11
isHidden: false
videoId: S45tqW6BqRs
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Which activation function switches values between -1 and 1?
answers:
- |
ReLU (Rectified Linear Unit)
- |
Tanh (Hyperbolic Tangent)
- |
Sigmoid
solution: 2
```
</section>

View File

@ -0,0 +1,52 @@
---
id: 5e8f2f13c4cdbe86b5c72d95
title: 'Neural Networks: Creating a Model'
challengeType: 11
isHidden: false
videoId: K8bz1bmOCTw
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks below to build a sequential model of dense layers:
```py
model = __A__.__B__([
__A__.layers.Flatten(input_shape=(28, 28)),
__A__.layers.__C__(128, activation='relu'),
__A__.layers.__C__(10, activation='softmax')
])
```
answers:
- |
A: `keras`
B: `Sequential`
C: `Dense`
- |
A: `tf`
B: `Sequential`
C: `Categorical`
- |
A: `keras`
B: `sequential`
C: `dense`
solution: 1
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d94
title: 'Neural Networks: Optimizers'
challengeType: 11
isHidden: false
videoId: hdOtRPQe1o4
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What is an optimizer function?
answers:
- |
A function that increases the accuracy of a model's predictions.
- |
A function that implements the gradient descent and backpropagation algorithms for you.
- |
A function that reduces the time a model needs to train.
solution: 2
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72d92
title: Neural Networks with TensorFlow
challengeType: 11
isHidden: false
videoId: uisdfrNrZW4
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
A densely connected neural network is one in which...:
answers:
- |
all the neurons in the current layer are connected to one neuron in the previous layer.
- |
all the neurons in each layer are connected randomly.
- |
all the neurons in the current layer are connected to every neuron in the previous layer.
solution: 3
```
</section>

View File

@ -0,0 +1,48 @@
---
id: 5e8f2f13c4cdbe86b5c72da5
title: 'Reinforcement Learning With Q-Learning: Example'
challengeType: 11
isHidden: false
videoId: RBBSNta234s
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks to complete the following Q-Learning equation:
```py
Q[__A__, __B__] = Q[__A__, __B__] + LEARNING_RATE * (reward + GAMMA * np.max(Q[__C__, :]) - Q[__A__, __B__])
```
answers:
- |
A: `state`
B: `action`
C: `next_state`
- |
A: `state`
B: `action`
C: `prev_state`
- |
A: `state`
B: `reaction`
C: `next_state`
solution: 1
```
</section>

View File

@ -0,0 +1,30 @@
---
id: 5e8f2f13c4cdbe86b5c72da4
title: 'Reinforcement Learning With Q-Learning: Part 2'
challengeType: 11
isHidden: false
videoId: DX7hJuaUZ7o
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
What can happen if the agent does not have a good balance of taking random actions and using learned actions?
answers:
- |
The agent will always try to minimize its reward for the current state/action, leading to local minima.
- |
The agent will always try to maximize its reward for the current state/action, leading to local maxima.
solution: 2
```
</section>

View File

@ -0,0 +1,32 @@
---
id: 5e8f2f13c4cdbe86b5c72da3
title: Reinforcement Learning With Q-Learning
challengeType: 11
isHidden: false
videoId: Cf7DSU0gVb4
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
The key components of reinforcement learning are...
answers:
- |
environment, representative, state, reaction, and reward.
- |
environment, agent, state, action, and reward.
- |
habitat, agent, state, action, and punishment.
solution: 2
```
</section>