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# Artificial Intelligence : Recent Questions and Answers

## Is the self-attention matrix softmax output (layer 1) symmetric?

Let's assume that we embedded a vector of length 49 into a matrix using 512-d embeddings. If we then multiply the matrix by its transposed version, we receive a matrix...

## Is there a good website where I can learn about Deep Deterministic Policy Gradient?

Is there a good website where I can learn about Deep Deterministic Policy Gradient?...

Asked on 01/05/2022 by Huzaifah Shamim

## Why can we perform graph convolution using the standard 2d convolution with $1 times Gamma$ kernels?

Recently I was reading this paper Skeleton Based Action RecognitionUsing Spatio Temporal Graph Convolution. In this paper, the authors claim (below equation (ref{9})) that we can perform...

## Anomaly Detection in distributed system using generated log file

I am developing an AI tool for anomaly detection in a distributed system.  The system supports an interface that combines several individual logs into a single log file generating approx....

## How do big companies, like Facebook, model individuals and their interaction?

As a layman in AI, I want to get an idea of how big data players, like Facebook, model individuals (of which they have so many data). There are two...

## How to evaluate the performance of an autoencoder trained on image data?

I am training an autoencoder on (general) image data. I use binary crossentropy loss function, but it is not very informative when I want to evaluate the performance of...

## Is there an optimal way to split the text into small parts when working with co-reference resolution?

I am working with co-reference resolution in a large text. Is there an optimal way to split the text into small parts? Or the best correct procedure is to use...

## Extending patch based image classification into image classification

I am trying to classify tampered, pristine images from set of images, in that I have built a network in which I would divide the image into multiple overlapping patches...

## How to properly optimize shared network between actor and critic?

I'm building an actor-critic reinforcment learning algorithm to solve environments. I want to use a single encoder to find representation of my environment. When I share the encoder with the...

## Which is a better form of regularization: lasso (L1) or ridge (L2)?

Given a ridge and a lasso regularizer, which one should be chosen for better performance? An intuitive graphical explanation (intersection of the elliptical contours of the loss function with...