hash-based approach to data mining
... said to be a good method to implement over different types of data in variant size 10 Hash-Based Approach to Data Mining CHAPTER 2: Algorithms using hashbased approach to find association rules ... going into the detail of algorithms, I’d like to give you a brief view of hashing In term of data structure and algorithm, hash-method often used an array structure to store database If the database ... approach - To build up a system to manage a small soft, find interesting rules related to customer routines This soft used PHS algorithms and provided good result 35 Hash-Based Approach to Data Mining...
Ngày tải lên: 15/04/2013, 21:33
Introduction to Data Access
... expect It’s up to you, as a developer, to decide how you expect them to occur and to use transactions to meet your goals CHAPTER ■ INTRODUCTION TO DATA ACCESS • Network connections to database systems ... important to fix These categories apply whenever you write data- access code To our knowledge, all data- access tools available today can be affected by any of these categories Database Resources Data- access ... Raw JDBC to Access a Database package com.apress.springbook.chapter05; public class JDBCTournament { private javax.sql.DataSource dataSource; public int countTournamentRegistrations(int tournamentId)...
Ngày tải lên: 05/10/2013, 04:20
... The third factor that affects the storage and transmission of data is security Generally, we not want our data transmissions to be intercepted, copied, and read on their way Even data saved on ... specific type of data The goal of the book is to introduce the reader to the chief approaches, methods, and techniques that are currently employed to compress data The main aim is to start with ... www.verypdf.com to remove this watermark 1 Approaches to Compression How can a given a data file be compressed? Compression amounts to eliminating the redundancy in the data, so the first step is to find...
Ngày tải lên: 14/12/2013, 15:15
... determines whether it is a token or raw data A token is used to obtain data from the dictionary and write it on the output Raw data is output as is The decoder does not have to parse the input in ... Compare X to its successors in the tree (from left to right and bottom to top) If the immediate successor has frequency F + or greater, the nodes are still in sorted order and there is no need to change ... encoder has to use a buffer Bits of the compressed data are entered into the buffer as they are being generated and are moved out of it at a constant rate, to be transmitted It is easy to see intuitively...
Ngày tải lên: 14/12/2013, 15:15
Tài liệu A Concise Introduction to Data Compression- P3 pptx
... order to remove ambiguity, the term “edoc” is used here to refer to them Each edoc is converted to a prefix code that’s output The first table allocates edocs through 255 to the literals, edoc 256 to ... frequency It is also possible to modify this transform to conserve the energy of the data vector All that’s needed is to multiply the transformation matrix W by the scale factor 1/2 Thus, the product ... statistical model of the data They are based on the fact that the data files that are of interest to us, the files we want to compress and keep for later use, are not random A typical data file features...
Ngày tải lên: 14/12/2013, 15:15
Tài liệu A Concise Introduction to Data Compression- P4 pptx
... wavelet transform is the tool used in practice to analyze digital data and compress it The wavelet transform is a tool that cuts up data or functions or operators into different frequency components, ... compressed in a single left -to- right, top -to- bottom scan; (b) progressive mode where the image is compressed in multiple blocks (known as “scans”) to be viewed from coarse to fine detail; (c) lossless ... DCT when applied to a continuous-tone image and to a discrete-tone image We start with the highly correlated pattern of Table 5.10 This is an idealized example of a continuous-tone image, since...
Ngày tải lên: 14/12/2013, 15:15
Tài liệu A Concise Introduction to Data Compression- P5 docx
... computer users long to realize that a computer can also store and process nonnumeric data The term “multimedia,” which became popular in the 1990s, refers to the ability to digitize, store, and manipulate ... is then applied in the same manner to three of the 16 subbands, decomposing each into 16 smaller subbands The last step is to decompose the top-left subband into four smaller ones 11 12 13 14 15 ... audio file, we often want to listen to it while it is decompressed (in fact, we decompress it only in order to listen to it) This is why audio compression methods tend to be asymmetric The encoder...
Ngày tải lên: 14/12/2013, 15:15
Tài liệu A Concise Introduction to Data Compression- P6 pptx
... method to “predict” (to assign probabilities to) the data to be compressed This concept is important in statistical data compression When a statistical method is used, a model for the data has to ... Shannon–Fano constructs its codes top to bottom (from the leftmost to the rightmost bits), while Huffman constructs a code tree from the bottom up (builds the codes from right to left) (See also Shannon–Fano ... save pieces of the data in a “dictionary” data structure If a string of new data is identical to a piece that is already saved in the dictionary, a pointer to that piece is output to the compressed...
Ngày tải lên: 14/12/2013, 15:15
Tài liệu A Concise Introduction to Data Compression- P7 doc
... method to “predict” (to assign probabilities to) the data to be compressed This concept is important in statistical data compression When a statistical method is used, a model for the data has to ... Shannon–Fano constructs its codes top to bottom (from the leftmost to the rightmost bits), while Huffman constructs a code tree from the bottom up (builds the codes from right to left) (See also Shannon–Fano ... save pieces of the data in a “dictionary” data structure If a string of new data is identical to a piece that is already saved in the dictionary, a pointer to that piece is output to the compressed...
Ngày tải lên: 14/12/2013, 15:15
Tài liệu Global Warming A Mind Mapper''''s Guide to The Science and Solutions pdf
... world) would need to come to an end to achieve the reduction that is required It is difficult to get a man to understand something when his salary depends upon Not wanting to suffer financially, ... feeling overwhelmed with the thought ‘It’s all too be) to change and things differently hard’ It was a struggle for me to find the motivation to try to something about global warming among all that ... similar to a religious conversion We need to undergo a conversion As you go about taking from putting money first to the earth first The cycle actions to bring about a better of cynicism needs to...
Ngày tải lên: 17/12/2013, 02:15
Tài liệu Module 1: Introduction to Data Warehousing and OLAP pptx
... as their data sources Customer_Dim Customer_Dim ShipperKey ShipperKey ShipperID ShipperID CustomerKey CustomerKey CustomerID CustomerID To facilitate data retrieval and analysis, a data warehouse ... OLAP Data Warehouse System Components Topic Objective To present the components of a data warehouse system Data Warehouse Data Sources Staging Area Data Marts User Data Access Lead-in A data ... that move data from its source system to users who perform data analysis Data Input Data Access Delivery Tips Use this slide to introduce OLAP solutions and data marts and to transition into the...
Ngày tải lên: 21/12/2013, 19:15
Tài liệu Dreaming - An Introduction to the Science of Sleep pptx
... d to be o v e r c o m e if dream science is to be universally valid To test the generality of the findings and to be sure that I w a s n ' t just making up dreams to fit my theory, we need to ... and 'episodic' refer to specific W h y did the analysis of dream content fail to become a science? m e m o r i e s of p e r s o n a l or historical events, e.g I w e n t to Boston last w e e k e ... the Nightcap, together with Nightcap output and analysis Top trace: histogram plot of eyelid movements; second trace: hypnogram of computerscored Nightcap data; third trace: histogram plotting...
Ngày tải lên: 24/01/2014, 08:20
Tài liệu Module 2: Connecting to Data Sources pptx
... connecting to a data source, you must first choose a NET data provider The data provider includes classes that enable you to connect to the data source, read data efficiently, modify and manipulate data, ... Introduction ADO.NET uses the NET data providers to connect to a data source, retrieve data, manipulate data, and update the data source The NET data providers are designed to be lightweight That is, ... classes that you use to connect to a data source, and retrieve and update data Types of NET data providers " SQL Server NET Data Provider " OLE DB NET Data Provider " ODBC NET Data Provider " Others...
Ngày tải lên: 24/01/2014, 10:20
Tài liệu Module 17: Introduction to Data Mining pptx
... Introduction to Data Mining 19 Selecting Training Data Topic Objective To review the meaning of training data and demonstrate how to select training data Lead-in What is training data? What training data ... Introduction to Data Mining Data Mining Models Topic Objective To describe different data mining models and how they apply to data analysis ! Analysis Services Models Lead-in A variety of data mining ... Introduction to Data Mining Pricing Insurance In the insurance industry, you use data mining techniques to analyze historical data such as age, marital status, gender, and driving history All these factors...
Ngày tải lên: 24/01/2014, 19:20
Tài liệu AMENDMENTS TO RULE TO PREVENT DECEPTIVE MARKETING OF CREDIT REPORTS AND TO ENSURE ACCESS TO FREE ANNUAL FILE DISCLOSURES pptx
... this Notice, the Commission is proposing to amend its Free Annual File Disclosures Rule (“Free Reports Rule or Rule ),1 which went into effect in 2004 This Rule sets out the procedures that nationwide ... materials D Proposed Changes to Section 610.2 In addition to adding provisions to implement section 205, the Commission also proposes several changes to section 610.2 of the Rule to address certain practices ... trade regulation rules See Trade Regulation Rule Pursuant to the Telephone Disclosure and Dispute Resolution Act of 1992 (“Pay Per Call Rule ), 16 CFR Part 308; Door -to- Door Sales Rule, 16 CFR Part...
Ngày tải lên: 18/02/2014, 07:20
Tài liệu YOUR GUIDE TO THE SCIENCE, HISTORY, ART AND TECHNOLOGY OF PAPERMAKING pdf
... contaminants and enough force to run the stamping wheel He also needed to be relatively close to potential customers Crane settled on Dalton Massachusetts on the Housatonic River with its clear ... mail to the homes and farms Zenas Crane persuaded the postriders to spread the news to save rags and take them to the village stores The women could barter the rags for goods or credit and the stores ... the history of paper from pre-historic times to the present A collection of important dates will follow this section Another way to get students involved in the history of papermaking and to introduce...
Ngày tải lên: 22/02/2014, 09:20
DOES AESTHETIC APPRECIATION OF LANDSCAPES NEED TO BE SCIENCE-BASED? docx
... need science to teach us what happens on landscapes, though science enriches that story All who have had to cope in the world knew this, natives of landscapes wherever Science brings insight into ... and science can be objective about that; but landscape as phenomena is difficult to dismiss as mere phenomena, because the full story of natural history is too phenomenal, too spectacular, to ... witness to an ecology of predator and prey, to population dynamics, to heterotrophs feeding on autotrophs The carcass, beginning to decay, was already being recycled by microorganisms All this science...
Ngày tải lên: 07/03/2014, 17:20
GOT DATA? A GUIDE TO DATA PRESERVATION IN THE INFORMATION AGE pptx
Ngày tải lên: 08/03/2014, 19:20
Data Mining: Introduction Lecture Notes for Chapter 1 Introduction to Data Mining ppt
... better, customized services for an edge (e.g in Customer Relationship Management) © Tan,Steinbach, Kumar Introduction to Data Mining Why Mine Data? Scientific Viewpoint Data collected and stored at ... or semi-automatic means, of large quantities of data in order to discover meaningful patterns © Tan,Steinbach, Kumar Introduction to Data Mining What is (not) Data Mining? What is not Data Mining? ... whether a customer is likely to be lost to a competitor – Approach: • Use detailed record of transactions with each of the past and present customers, to find attributes – How often the customer calls,...
Ngày tải lên: 15/03/2014, 09:20