Questions tagged [artificial-intelligence]

Artificial Intelligence (AI) is a topic in computer science that deals with the study / creation of intelligent machines. Use this tag for on-topic questions that have an AI aspect.

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92
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8answers
74k views

Objective function, cost function, loss function: are they the same thing?

In machine learning, people talk about objective function, cost function, loss function. Are they just different names of the same thing? When to use them? If they are not always refer to the same ...
1
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1answer
262 views

What does make SVM a “soft computing” method?

Soft computing is defined in [1] by the capability of "operating with uncertain, imprecise and incomplete information in a manner that reflects human thinking". So, based on my limited understanding, ...
0
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1answer
89 views

ANN produces different result every time it's run

I tried an artificial neural network (ANN) model. Using same data set, it gives a different answer every time I run it in MATLAB. Does anyone why this happens and can suggested the best way to analyze ...
24
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4answers
5k views

What can we learn about the human brain from artificial neural networks?

I know my question/title is not very specific, so I will try to clearify it: Artificial neural networks have relatively strict designs. Of course, generally, they are influenced by biology and try to ...
7
votes
3answers
11k views

What are the most popular artificial neural network algorithms for recognising the content of images?

What are the most used/popular artificial neural network algorithms for recognising the content of images in general? E.g. If the picture is of a person, dog, cat or a car. If the picture is a ...
3
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2answers
1k views

Are fixed bias neurons or biased neurons better?

When building an artificial neural network, there seems to be two differing philosophies in usage of biases. There are those groups that propose neural networks with a fixed bias neuron with a ...
3
votes
1answer
3k views

Is there a heuristic for determining the size of a fully connected layer at the end of a CNN?

For example, in VGG/OxfordNet, the fully connected (dense) layers that precede the final classification layer are of size 4096. Similarly, in an AlexNet ... the number of neurons in the network’...
4
votes
0answers
869 views

Why is the derivative of the LSTM cell state w.r.t. to the previous cell state equal to the forget gate?

I keep seeing this online, on Quora and Machine Learning subreddits but I don't get it. Here's some basic math to show otherwise: We use this equation for the cell state: $c_t = f_t \odot c_t\__1 + ...
1
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0answers
84 views

Which ML algorithm is suitable for the following problem?

Assume i have x states each defined by an n-dimensional feature vector. In addition i have a set of actions which can be taken in each state resulting in a state action score. What would be an ...
0
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1answer
80 views

Is time series analysis suitable for long term predicting/forecasting?

Can I use time series analysis to predict/forecast long term ? Example using ARIMA, how can I explain the back of the theory its?