What is digest algorithm?

The t-digest is an algorithm for accurately estimating quantiles from a compact sketch. The t-digest allows accurate estimates of data with arbitrary distribution. • The t-digest library has a simple API and no runtime dependencies, available on GitHub.

What is anomaly testing?

An anomaly is something that in some unspecified way stands out from its background, and the goal of anomaly testing is to determine which samples in a population stand out the most.

Why is network anomaly detected?

Network behavior anomaly detection (NBAD) provides one approach to network security threat detection. It is a complementary technology to systems that detect security threats based on packet signatures. NBAD is the continuous monitoring of a network for unusual events or trends.

Which is better anomaly-based IDS or signature-based IDS?

Differences. The primary difference between an anomaly-based IDS and a signature-based IDS is that the signature-based IDS will be most effective protecting against attacks and malware that have already been detected, identified and categorized. Any IDS that depends entirely on signatures will have this limitation.

What is the t-digest algorithm?

A short description from github page: A new data structure for accurate on-line accumulation of rank-based statistics such as quantiles and trimmed means. The t-digest algorithm is also very parallel friendly making it useful in map-reduce and parallel streaming applications.

What is the difference between t-digest and Q-Digest?

In order to deal with memory consumption Q-Digestalgorithmhas been developed and after that T-digesthas been created as improvement of Q-digest. The main idea of these algorithms is to sacrifice accuracy of calculation for decrease of required amount of memory.

What is the difference between tdunning/t-digest and AddThis/stream-Lib?

In general there is no much difference in the interface between tdunning/t-digestand addthis/stream-lib. The example for addthis/stream-libyou can find in StreamLibExample.scalafile. However tdunning/t-digesthas more accuracy and less calculation time.