dua tren tai lieu data mining

... gom nhóm phân lớp liệu đồ thị khám phá chúng với phương pháp khai thác mẫu đồ thị Chương 9:Graph Mining 9.1 Khai thác đồ thị Đồ thị ngày trở nên quan trọng việc mô hình hóa cấu trúc phức tạp (hợp ... lập mục video, thu hồi văn bản, phân tích Web nhu cầu phân tích liệu có cấu trúc ngày tăng graph mining trở thành nhiệm vụ quan trọng Ví Dụ: Mạng cộng tác tác giả Hình 1: Ví dụ ứng dụng đồ thị...

Ngày tải lên: 12/11/2015, 13:20

... distributed data mining [51] Traditional data mining algorithms require all data to be mined in a single, centralized data warehouse A fundamental challenge is to develop distributed versions of data mining ... Chapter Multimedia data mining, including text mining, image mining, and Web mining, is dealt with in Chapter Finally, certain aspects of Bioinformatics, as an application of data mining, are discussed ... for data mining Many multimedia data mining systems are intended to be used by humans So it is a pragmatic 28 INTRODUCTION TO DATA MINING approach to design multimedia systems and underlying data...

Ngày tải lên: 13/12/2013, 01:15

... actual data for mining This also increases the mining efficiency by reducing the time required for mining the preprocessed data Data preprocessing involves data cleaning, data transformation, data ... Algorithms in Data Mining 2.5.1 Regression 2.5.2 Association rules 2.6 Role of Rough Sets in Data Mining 2.7 Role of Wavelets in Data Mining 2.8 Role of Hybridizations in Data Mining 2.9 Conclusions ... Preface Introduction to Data Mining 1.1 Introduction 1.2 Knowledge Discovery and Data Mining 1.3 Data Compression 1.4 Information Retrieval 1.5 Text Mining 1.6 Web Mining 1.7 Image Mining 1.8 Classification...

Ngày tải lên: 13/12/2013, 01:15

... include object-oriented database design, schema management, query optimization, and complex object database constraints He has published in the following topics: database design, database constraints, ... relationships in large data and knowledge bases, in: Proceedings of the ACM SIGMOD International Conference on the Management of Data, 1989, pp 253–262 M.F van Bommel, P Wang / Data & Knowledge Engineering ... SIGMOD International Conference on Management of Data, 1987, pp 323–330 [3] A Borgida, R.J Brachman, D.L McGuinness, L.A Resnick, Classic: a structural data model for objects, in: Proceedings of the...

Ngày tải lên: 19/01/2014, 13:20

... distributed data mining [51] Traditional data mining algorithms require all data to be mined in a single, centralized data warehouse A fundamental challenge is to develop distributed versions of data mining ... Chapter Multimedia data mining, including text mining, image mining, and Web mining, is dealt with in Chapter Finally, certain aspects of Bioinformatics, as an application of data mining, are discussed ... for data mining Many multimedia data mining systems are intended to be used by humans So it is a pragmatic 28 INTRODUCTION TO DATA MINING approach to design multimedia systems and underlying data...

Ngày tải lên: 19/01/2014, 17:20

... actual data for mining This also increases the mining efficiency by reducing the time required for mining the preprocessed data Data preprocessing involves data cleaning, data transformation, data ... Algorithms in Data Mining 2.5.1 Regression 2.5.2 Association rules 2.6 Role of Rough Sets in Data Mining 2.7 Role of Wavelets in Data Mining 2.8 Role of Hybridizations in Data Mining 2.9 Conclusions ... Preface Introduction to Data Mining 1.1 Introduction 1.2 Knowledge Discovery and Data Mining 1.3 Data Compression 1.4 Information Retrieval 1.5 Text Mining 1.6 Web Mining 1.7 Image Mining 1.8 Classification...

Ngày tải lên: 19/01/2014, 17:20

... nhiên, trở ngại lớn mùa khô kéo dài xâm nhập sâu vào đất liền nước mặn làm tăng độ chua chua mặn đất tai biến thời 14 tiết, khí hậu xảy Trong khu vực có gió thổi mạnh với tốc độ khoảng 35km/giờ Tháng...

Ngày tải lên: 11/04/2015, 14:19

... Describing Series Data Series data differs from the forms of data so far discussed mainly in the way in which the data enfolds the information The main difference is that the ordering of the data carries ... useless—models Detrending nontrended data can enormous damage But can the miner avoid it? Figure 9.14 A cosine waveform and straight line indicating a trend even though the waveform actually has no trend ... real-world data it is often very much harder, impossible even, to determine if apparent trend is an artifact of the data or real There is no substitute for looking at the data in the form of data plots,...

Ngày tải lên: 15/12/2013, 13:15

... values • Remove trend Linear trend is easy to remove Try fitting some other fractional frequency trend lines if they look like they might fit If uncertain, fit a few different trend lines—log, ... underlying trend in the data? If so, subtract it from the data When graphed, does the data fit the horizontal axis better? If yes, fine If no, keep trying • Adjust variance Subtract out the trend ... series data, the distribution should be normalized after removing any trend When modeling series data, the series should, if possible, be what is known as stationary A stationary series has no trend...

Ngày tải lên: 15/12/2013, 13:15

... the information retained 10.6 How Much Data Is Enough? Chapter examined the question of how much data was enough in terms of determining how much data was needed to prepare individual variables ... large for the mining tool the customer had selected, causing repeated mining software failures and system crashes during mining The data reduction methodology described above reduced the data set ... than data preparation? Data preparation concentrates on transforming and adjusting variables’ values to ensure maximum information exposure Data surveying concentrates on examining a prepared data...

Ngày tải lên: 15/12/2013, 13:15

... far as data preparation for data mining is concerned, the journey ends here However, the data is still unmined The ultimate purpose of preparing data is to gain understanding of what the data “means” ... cannot Almost all real-world data sets are noisy, so the example data sets used here comprise noisy data approximating the two curves Data set F (functional) contains the data for the curve that can ... and data set NF (nonfunctional) contains data for the curve not describable by a function While simplified for the example, both of these data sets contain all the elements of real-world data...

Ngày tải lên: 15/12/2013, 13:15

... “balloon” area uncertain and ill defined More data still leaves predicting values in this area uncertain as the uncertainty is inherent in the data not caused by, say, lack of data Figure 11.7 illustrates ... tensegrity data structure The data survey uses techniques to estimate the strength of the tension and compression forces, the “natural” shape of the data set, how much “energy” it contains, and ... area in one data set pointing to a more densely populated area in the other data set The survey makes a comprehensive map of state space density—both of the input data set and the output data set...

Ngày tải lên: 15/12/2013, 13:15

... even then, statisticians and data miners still have different philosophical approaches to modeling from data 12.1.3 Data Mining vs Exploratory Data Analysis Exploratory data analysis (EDA) is a statistical ... wanted to try data mining, a new discipline to her, but one that had received good reviews in the business press How did the data mining project differ from the statistical approach? Data mining did ... using the best data preparation available—is that data preparation adds value to the business objective that the miner is addressing 12.1 Modeling Data Before examining the effect the data preparation...

Ngày tải lên: 15/12/2013, 13:15

... effects of data preparation: normalization of data range (left), and normalization and redistribution of data set (right) 12.3.1 Neural Networks and the CREDIT Data Set The CREDIT data set is ... and an 85.8283% accuracy in the test data for the prepared data set (bottom) 12.4 Practical Use of Data Preparation and Prepared Data How does a miner use data preparation in practice? There are ... watermark Data preparation looked at here has dealt with data in the form collected in mainly corporate databases Clearly this is where the focus is today, and it is also the sort of data on which data...

Ngày tải lên: 15/12/2013, 13:15

... from the data survey, and taking the CREDIT data set as it comes, how does a decision tree perform? Two trees were built on the CREDIT data set, one on prepared data, and one on unprepared data The ... and an 85.8283% accuracy in the test data for the prepared data set (bottom) 12.4 Practical Use of Data Preparation and Prepared Data How does a miner use data preparation in practice? There are ... Future Data preparation looked at here has dealt with data in the form collected in mainly corporate databases Clearly this is where the focus is today, and it is also the sort of data on which data...

Ngày tải lên: 15/12/2013, 13:15

Ngày tải lên: 20/08/2015, 11:53

... ng nh gi m d n, ó kh n ng quy t tin c y c a vi c quy t ng c nh c tr ng phù h p u tiên s c dùng Strength Conflict -5- c tr ng c c nh c a m i nh M t t nh p nh ng c phân lo i b ng cách t qua danh...

Ngày tải lên: 04/08/2013, 15:54

... to Data Centers – Data Center Design Topology is different from Commercial Buildings – Standards body recognized this and created a Data Center specific standard, namely TIA-942 34 TIA-942 Data ... great concern • Mainly used for Email and data storage 12 Carrier Meets Enterprise • Telephone Exchanges/Central offices are evolving into Data Centers 13 Data Centers emerge • Server numbers increased ... of important data (websites, transactions, video, voice, logs, records) – 24x7x365 immediate access to information from anywhere – Reliability and Redundancy 28 Trends impacting All Data Centers...

Ngày tải lên: 10/12/2013, 03:15

... Oracle Data Guard—Provides data protection for databases situated at data centers at metro, regional, or even continental distances It is based on redo log shipping between active and standby databases ... Results A-19 Data Center (Catalyst 6000 Series Switch—DC1-Left) A-19 Data Center (Catalyst 6000 Series Switch—DC1-Right) A-20 Data Center (Catalyst 6000 Series Switch—DC2-Left) A-20 Data Center ... implementing local and distributed data center IP infrastructures Document Organization This guide contains the chapters in the following table Section Description Chapter 1, Data Center High Availability...

Ngày tải lên: 10/12/2013, 16:15