When writing about data compression, I am haunted by the idea that many of the techniques discussed in this book have been patented by their inventors or others. The knowledge that a data compression algorithm can effectively be taken out of the hands of programmers through the use of so-called “intellectual property” law seems contrary to the basic principles that led me and many others into this profession.
A Hardware Architecture for Elliptic Curve Cryptography and Lossless Data Compression. We present a hardware architecture that combines Elliptic Curve Cryptography (ECC) and lossless data compression in a single chip.
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Modiﬁed Run-Length Coding towards the Realization of a RRO-NRDPWT-Based ECG Data Compression System
Chương 3 của bài giảng Lý thuyết thông tin (Information Theory) cung cấp những kiến thức về nén dữ liệu (data compression) và entropy. Chương này trình bày một số nội dung cụ thể như sau: Ý tưởng về entropy, entropy nhị phân đối xứng, entropy cực tiểu và cực đại, mở rộng của nguồn thông tin,... Mời các bạn cùng tham khảo.
Data compression is the technique to reduce the redundancies in data representation
in order to decrease data storage requirements and, hence, communication
costs when transmitted through a communication network [24, 25].
Reducing the storage requirement is equivalent to increasing the capacity of
the storage medium. If the compressed data are properly indexed, it may
improve the performance of mining data in the compressed large database as
(BQ) Data Communications and Computer Networks: A Business User's Approach will give you the thorough understanding you need of basic features, operations, and limitations of ifferent types of computer networks. This book offers full coverage of wireless technologies, industry convergence, compression techniques, network security, LAN technologies, VoIP, and error detection and correction.
Use the following strategy to present this module:
!" Managing Data Compression
Provide an overview of data compression management. Describe the
characteristics of compressed files and folders. Describe and demonstrate
how to compress files and folders. Explain the compression state of files and
folders that are copied and moved within and between partitions. The topic
on copying and moving compressed files and folders has an animated slide.
We describe our experiments with training algorithms for tree-to-tree synchronous tree-substitution grammar (STSG) for monolingual translation tasks such as sentence compression and paraphrasing. These translation tasks are characterized by the relative ability to commit to parallel parse trees and availability of word alignments, yet the unavailability of large-scale data, calling for a Bayesian tree-to-tree formalism.
In Statistics-Based Summarization - Step One: Sentence Compression, Knight and Marcu (Knight and Marcu, 2000) (K&M) present a noisy-channel model for sentence compression. The main difﬁculty in using this method is the lack of data; Knight and Marcu use a corpus of 1035 training sentences. More data is not easily available, so in addition to improving the original K&M noisy-channel model, we create unsupervised and semi-supervised models of the task.
A well-recognized limitation of research on supervised sentence compression is the dearth of available training data. We propose a new and bountiful resource for such training data, which we obtain by mining the revision history of Wikipedia for sentence compressions and expansions. Using only a fraction of the available Wikipedia data, we have collected a training corpus of over 380,000 sentence pairs, two orders of magnitude larger than the standardly used Ziff-Davis corpus.
CS 450: Compression presents about coding; Information; Example Information; Information vs Data; Quantifying Information - Entropy; Context; Calculating Information in Context; Types of Redundancy; Entropy Coding; Vector Quantization; Interpixel Redundancy;...
Chapter 6: MIDI and MPEG-4 audio compression. This chapter presents the following content: What is MIDI? MIDI as a compression tool? Brief history of MIDI, components of a MIDI system, basic MIDI concepts, hardware aspects of MIDI, structure of MIDI messages,...