đề tài data mining

... dependence relationships from the data, © 2009 by Taylor & Francis Group, LLC 72 Multimedia Data Mining the literature to perform specific multimedia data mining tasks as exemplified in the ... present we take this data set as the training data; the training data set represents the correct classification that we would like an SVM to eventually perform, by means of separating the data with a hyperplane, ... classes are exclusive, and for each input data object, there is one but only one output class that maps to the input data object. However, in many multimedia data mining applications, the output space...

Ngày tải lên: 10/12/2013, 09:15

... BASED DATA MINING TECHNIQUES The objective of data mining is to extract valuable information from one’s data, to discover the ‘hidden gold’. In Decision Support Management terminology, data mining ... one search for patterns of information in data (Parsaye, 1997). Figure 2: Rule Induction process Data mining techniques are based on data retention and data distillation. Rule induction models ... process. REFERENCES [1] Akeel Al-Attar, 1998, Data Mining – Beyond Algorithms’, http://www.attar.com/tutor /mining. htm. [2] Berry, J. A. Michael; Linoff, Gordon, 1997, Data Mining Techniques: For Marketing,...

Ngày tải lên: 11/12/2013, 23:15

Ngày tải lên: 13/12/2013, 01:15

Ngày tải lên: 13/12/2013, 01:15

... 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 ... reason that series data has to be prepared differently from nonseries data. There is a large difference between preparing data for modeling and actually modeling the data. This book focuses ... Modeling Series Data Given these tools for describing series data, how do they help with preparing the data for modeling? There are two main approaches to modeling series data. One uses...

Ngày tải lên: 15/12/2013, 13:15

... optimized mining toolset, could not deal with a multiterabyte, 7000+ variable data set required on one mining project. Another reason that high dimensionality presents difficulties for mining ... series data. Data visualization is a broad field in itself, and there are many highly powerful tools for handling data that have superb visualization capability. For small to moderate data sets, ... like. Does one of them seem to fit some 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....

Ngày tải lên: 15/12/2013, 13:15

... 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 ... density manifold stability. But here is where data preparation steps into the data survey. The data survey (Chapter 11) examines the data set as a whole from many different points of view. ... rather than data preparation? Data preparation concentrates on transforming and adjusting variables’ values to ensure maximum information exposure. Data surveying concentrates on examining a...

Ngày tải lên: 15/12/2013, 13:15

... do with data mining? The whole purpose of the data survey is to help the miner draw a high-level map of the territory. With this map, a data miner discovers the general shape of the data, as ... can be used to examine data as instances, data as variables, the data set as a whole, and various parts of a data set. Entropy and mutual information are used to evaluate data in many ways. Some ... Such data has a perspective. When mining perspectival data sets, it is very important to use nonperspectival test and evaluation sets. With the best of intentions, the mining data has...

Ngày tải lên: 15/12/2013, 13:15

... 11.4.1 Confidence and Sufficient Data A data set may be inadequate for mining purposes simply because it does not truly represent the population. If a data set doesn’t represent the population ... properly part of the data survey. The survey only looks at and measures the data set presented. While it provides information about the data set, it does not manipulate the data in any way, exactly ... of the instances can be assembled into a data set, and that data set examined for similarity to the training data set, but that only tells you that the data set now assembled was or wasn’t drawn...

Ngày tải lên: 15/12/2013, 13:15

... 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) ... 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 ... relationships from this data that are then to be applied to other similar data. Whatever can be discovered in this data is sufficient, since it works in this data set, and there is no other data set to...

Ngày tải lên: 15/12/2013, 13:15

... test data set (top) 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 ... working with the data. When the data is easy to model, better models come out faster, which is the technical purpose of data preparation. How does data preparation make the data easier to work ... 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

... what does data preparation alone achieve in this data set? In order to demonstrate that, we will look at two models of the data one on prepared data, and the other on unprepared data. ... 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 ... data mining tools and data modeling tools focus. The near future will see the development of automated data preparation tools for series data. Approaches for automated series data preparation...

Ngày tải lên: 15/12/2013, 13:15

Ngày tải lên: 22/12/2013, 02:17

... required for mining distributed data, handling the meta -data and the mappings required for mining the distributed data. Spatial database systems involve spatial data - that ... algorithms and is termed distributed data mining [51]. Traditional data mining algorithms require all data to be mined in a single, centralized data warehouse. A fundamental challenge ... 8. Multimedia data mining, including text mining, image mining, and Web min- ing, is dealt with in Chapter 9. Finally, certain aspects of Bioinformatics, as an application of data mining, ...

Ngày tải lên: 19/01/2014, 17:20

... Introduction to Data Mining 1 1.1 Introduction 1 1.2 Knowledge Discovery and Data Mining 5 1.3 Data Compression 10 1.4 Information Retrieval 12 1.5 Text Mining 14 1.6 Web Mining 15 1.7 ... actual data for mining. This also increases the mining efficiency by reducing the time required for mining the preprocessed data. Data preprocess- ing involves data cleaning, data transformation, ... multimedia data exploration, data mining should no longer be restricted to the mining of knowledge from large volumes of high-dimensional datasets in traditional databases only. ...

Ngày tải lên: 19/01/2014, 17:20

... Implementing a Data Mining Process Using Office 2007 187 Introducing the Data Mining Client 188 Importing Data Using the Data Mining Client 189 Data Exploration and Preparation 190 Discretizing Data with ... Data Mining 413 Mining Aggregated Data 414 OLAP Pattern Discovery Needs 415 OLAP Mining versus Relational Mining 415 Building OLAP Mining Models Using Wizards and Editors 417 Using the Data Mining ... 584 Exploring New Data Mining Frontiers and Opportunities 585 Further Reference 586 Microsoft Data Mining 586 General Data Mining 586 Appendix A: Data Sets 589 MovieClick Data Set 589 Voting Records Data...

Ngày tải lên: 22/01/2014, 22:20

Ngày tải lên: 24/01/2014, 19:20

Ngày tải lên: 27/01/2014, 09:20

Ngày tải lên: 16/02/2014, 06:20