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Text compression methods such as LZ can reduce file sizes by up to 80%. Professor Brailsford explains the nuts and bolts of how it is done.
YouTube-Computerphile
Text Compression
The History of Text Compression
The LZ77 Method
How LZ77 Works
Pointer Notation
Anchoring Example
Representing Integers
Trade-offs
What should I do to prepare for computer science?
The Three P's of Compression
This video was made as part of a fourth-year undergraduate course covering an overview of Data Compression. All slides and diagrams are ...
YouTube-BillBird
Limposiv Schemes
A Sliding Window
Window Sizes
Short Back References
Back Reference Literal Pairs
Deflate
Use Linear Search
Binary Search Tree
Searching with Binary Search Trees
The Deflate Scheme
Support us on Patreon: https://www.patreon.com/Geekific GitHub Repository: https://github.com/geekific-official/geekific-youtube/ Stay ...
YouTube-Geekific
Introduction
What is LZW Coding Algorithm?
Implementing the LZW Algorithm
Testing our Code
Thanks for Watching!
In this video I present the Lempel-Ziv-Welch data compression technique and demonstrate it with an example phrase.
YouTube-Chris Marriott - Computer Science
Intro
Coding for Common English Substrings
Fixed-Length Codes
Algorithm Walkthrough
Adding a directory entry
Selecting a larger bit size
Finding the longest prefix
Encoding a Character
Calculating Savings
Lempel-Ziv-Welch (LZW) Compression Ratio
During the pandemic I started pre-recording lectures for my courses (and using the live sessions for exercises). These videos were made just ...
Deflate Scheme
Designing periodic data
History of compression
Larger Window Size
Why LZW works
LZ78 Example
Conclusion
Self-balancing binary search trees
Summary
Information Theory Society presents how the Lempel-Ziv lossless compression algorithm works. It was published in 1978 (LZ78) and improved by ...
YouTube-Art of the Problem
In this video we will implement from scratch and using the C language, the Lempel-Ziv-Welch data compression algorithm.
YouTube-AlbiaSoft
Introducing the LZW
Shannon entropy
Trie Tree
How a Trie Tree works
Implementation of the Trie Tree
LZW compression
Pseudocode of the LZW compression
Implementation of the LZW compression
Output file format
LZW decompression
LZW decompression pseudocode
Implementation of the LZW decompression
Testing
In this video I do a quick exercise where I decode a message using LZW (de)compression.
Decoding with LZW
Decoding
Decoding Example
Finding the last character
CS Learning 101 cslearning101 has temporarily disbanded due to conflicting work schedules and will be unable to post new videos or answer ...
YouTube-TechRetox
What are Compression Algorithms?
Why Use Compression?
Applications
Lempel-Ziv-Welch Compression Example
Demo
Problems with LZW Compression
Uncompressing a String
Why we don't include the dictionary file
In this video I perform the LZW compression algorithm on an example phrase.
Lempel-Ziv-Welch (LZW) Compression Exercise
Lempel-Ziv-Welch (LZW) Compression
Encoding Y
Encoding a space
Explaining in step by step details how to use the LZW algorithm for compression and decompression. Other compression videos: ...
YouTube-DevPal
LZW Compression Example
How to distinguish between data and index
What is the LZW algorithm?
Three-letter patterns in LZW
Adding a new pattern to the dictionary
LZW index size
What if the index gets really big?
LZW Decoding
Information Theory Society presents how the Lempel-Ziv lossless compression algorithm works. It was published in 1978 and improved by Welch in 1984 leading ...
IEEE Information Theory Society-Art of the Problem