An activation function in a neural network defines how the weighted sum of the input is transformed into an output from a node or nodes in a layer of the network.
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An activation function is a mathematical function used in a neural network to determine the output of a neuron. Activation functions are used to transform the inputs into an output signal and can range from simple linear functions to complex non-linear functions. Activation functions are an important part of neural networks and help the network learn patterns and generalize data. Types of activation functions include sigmoid, ReLU, tanh, and softmax. References: BCS Foundation Certificate In Artificial Intelligence Study Guide,
Question 2
Healthcare can benefit from Al, and in particular Machine Learning, an example of which is?
Options:
A.
Autonomous wheelchairs.
B.
Automated blood sampling.
C.
Autonomous vehicles.
D.
Diagnostic image analysis
Answer:
D
Explanation:
Explanation:
Healthcare can benefit from AI, and in particular Machine Learning, in a number of ways. One example is diagnostic image analysis, which can help to automatically identify and classify abnormalities in medical images such as X-rays, CT scans, and MRI scans. Machine Learning algorithms can be used to detect patterns in the data which can be used to accurately diagnose diseases and illnesses.
References: [1] [2] [3] [4]
Question 3
How could machine learningmake a robot autonomous?
Options:
A.
Use OCR, optical character recognition, to read documents
B.
Use NLP (Natural Language Processing) to listen
C.
Use actuators to modify its environment
D.
Learn from sensor data and plan to carry out a task.
Answer:
D
Explanation:
Explanation:
Machine learning can be used to make robots autonomous by allowing them to learn from sensor data and plan how to carry out a task. This involves using algorithms to analyze data from sensors and use this data to make decisions and take actions. By using machine learning, robots can learn from their environment and become more autonomous. References:
[1] BCS Foundation Certificate In Artificial Intelligence Study Guide, "Robotics", p.98. [2] APMG-International.com, "Foundations of Artificial Intelligence" [3] EXIN.com, "Foundations of Artificial Intelligence"