data mining for information gold
investigative data mining for security and criminal detection 2003
Ngày tải lên :
04/06/2014, 13:16
... additional information about suspects in order to develop composites for investigative data mining applications 2.5Real Estate and Auto Data DataQuick sells real estate-related information, ... and probation information [2] Corrections information [3] Sex offender registration information [4] National Files Available to NLETS Users ATF gun tracking data FAA tracking information FAA ... websites with criminal data [1 ]Information not available from all states [2 ]Information not available from all states [3 ]Information not available from all states [4 ]Information not available...
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Data Preparation for Data Mining- P3
Ngày tải lên :
24/10/2013, 19:15
... Transformations and Difficulties—Variables, Data, and Information Much of this discussion has pivoted on information information in a data set, information content of various scales, and transforming ... the data set for mining to best expose the information contained in it to the mining tool Indeed, the whole purpose for mining data is to transform the information content of a data set that ... transforming information The concept of information is crucial to data mining It is the very substance enfolded within a data set for which the data set is being mined It is the reason to prepare the data...
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Data Preparation for Data Mining- P4
Ngày tải lên :
24/10/2013, 19:15
... bias Determining data structure Building the PIE Surveying the data Modeling the data 3.3.1 Stage 1: Accessing the Data The starting point for any data preparation project is to locate the data This ... execution data is in its “raw” form, and the model works only with prepared data, it is necessary to transform the execution data in the same way that the training and test data were transformed ... preparation activities Data Issue: Representative Samples A perennial problem is determining how much data is needed for modeling One tenet of data mining is “all of the data, all of the time.”...
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Data Preparation for Data Mining- P5
Ngày tải lên :
29/10/2013, 02:15
... original information This additional information actually forms another data stream and enriches the original data Enrichment is the process of adding external data to the data set Note that data ... the data is the place to start So what is the “hare” in data? The hare is the information content enfolded into the data set Just as hare is the essence of the recipe for Jugged Hare, so information ... original data set The data preparation software creates this variable and captures information about the missing value patterns For each pattern of missing values in the data set, the data preparation...
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Data Preparation for Data Mining- P6
Ngày tải lên :
29/10/2013, 02:15
... numerating the alphas, but also for conducting the data survey and for addressing various problems and issues in data mining Becoming comfortable with the concept of data existing in state space ... there is a data set CREDIT This includes a sample of real-world credit information One of the fields in that data set is “DAS,” which is a particular credit score rating All of the data used in ... Whatever techniques are used to prepare the data set, they should not distort its information content (i.e., add bias) Ideally, the data prepared for one tool should be useable by any other tool—and...
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Data Preparation for Data Mining- P7
Ngày tải lên :
08/11/2013, 02:15
... 0.8769 Forward 0.4940 0.4923 Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark Forward 0.6988 0.7692 Forward 0.4940 0.4462 Forward 0.6988 0.7538 Forward 0.4940 0.3231 Forward ... other alpha labels, appropriate numeration adds to the information available for modeling Inappropriate labeling at best makes useful information unavailable, and at worst, destroys it Please ... surface can reveal an enormous amount of useful, even vital information Exploring the density map forms a significant part of the data survey For example, tracing all of the “ridges”—that is, tracing...
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Data Preparation for Data Mining- P8
Ngày tải lên :
08/11/2013, 02:15
... Translating the information discovered there into insights about the data, and the objects the data represents, forms an important part of the data survey in addition to its use in data preparation ... reveals the most information, or at least does the least damage to existing information The only time that an alpha variable’s label values come again to the fore is in the Prepared Information Environment ... with putting data into the multitable structures called “normal form” in a database, data warehouse, or other data repository.) During the process of manipulation, as well as exposing information, ...
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Data Preparation for Data Mining- P9
Ngày tải lên :
08/11/2013, 02:15
... the least harm to the information content of the data set Yet it still leaves some information exposed for the mining tools to use when values outside those within the sample data set are encountered ... work.) Third, and very important for maximum information exposure, the individual variable distributions are transformed This transformation makes the between-variable information far more accessible ... capturing the information that they were missing, actually removes information from the data set How is this? Replacing a missing value obscures the fact that it was missing This information can...
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Tài liệu Data Preparation for Data Mining- P10 docx
Ngày tải lên :
15/12/2013, 13:15
... 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 carries information ... series data set so that it can be accurately and completely characterized Find methods for manipulating the unique features of series data to expose the information content to mining tools Series data ... descriptions of features of nonseries data and various methods for manipulating the identified features to expose information content This chapter does the same for series data and so has two main tasks:...
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Tài liệu Data Preparation for Data Mining- P11 pdf
Ngày tải lên :
15/12/2013, 13:15
... carry information that must be used The problem is that, unless somehow concentrated, the information density is too low for mining tools to make good use of it The solution is to increase the information ... patterns this way does lose some information Binning itself discards information in the variables for a practical gain in usability However, using PVPs makes much of the information in very sparsely ... transform accomplishes this The second transform subtracts the mean of the transformed variable from each transformed value, and divides the result by the standard deviation The formula for this...
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Tài liệu Data Preparation for Data Mining- P12 pptx
Ngày tải lên :
15/12/2013, 13:15
... 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 ... Future stock market performance, for instance, is impossible to accurately predict—this is intrinsically unknowable information, not just unknown-but-in-principle-knowable information Stochastic ... 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...
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Tài liệu Data Preparation for Data Mining- P13 pptx
Ngày tải lên :
15/12/2013, 13:15
... information. ” This book mentions information in several places Information is embedded in a data set.” “The purpose of data preparation is to best expose information to a mining tool.” Information ... to a mining tool.” Information is contained in variability.” Information, information, information Clearly, information is a key feature of data preparation In fact, information its discovery, ... that mining is not designed to extract information Data, or the data set, enfolds information This information describes many and various relationships that exist enfolded in the data When mining, ...
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Tài liệu Data Preparation for Data Mining- P14 pdf
Ngày tải lên :
15/12/2013, 13:15
... the data set perfectly transfers all of its information, then cI(X;Y) = cH(X,Y) The ratio is cI(X;Y):cH(Y) Variable entropy and information measures Following the data set entropy and information ... full range of calculations for forward and reverse entropy, signal entropy and mutual information, even for this simplified example, are quite extensive For instance, determining the entropy of each ... discover information about a data set, and how the miner can use the discovered information Introductory Note: Sequential Natural Clustering Before looking at extracts of surveys of these data sets,...
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Tài liệu Data Preparation for Data Mining- P15 doc
Ngày tải lên :
15/12/2013, 13:15
... map for the CREDIT data set in Figure 11.31 that carries useful information In spite of the apparent perfect predictions possible from the information enfolded in this data (shown in the information ... doesn’t seem to need much information to that, and while there is little noise-free information available, perhaps noisy information will And in fact, of course, noisy information will Remember ... much noise—all useful information for the miner Not all information/ noise/capture maps look like this one does For comparison, Figure 11.30 shows a map for a different data set Figure 11.30 An...
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Tài liệu Data Preparation for Data Mining- P16 ppt
Ngày tải lên :
15/12/2013, 13:15
... unprepared data shows an 81.8182% accuracy on the 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 ... model is needed, data extracts for training, test, and evaluation data sets can be prepared and models built on those data sets For any continuously operating model, the Prepared Information Environment ... dictionary information extracted and inferred from one or more data sets Such knowledge schema represent a form of “understanding” of the data Simple knowledge schema are currently being built from information...
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Tài liệu Data Preparation for Data Mining- P17 ppt
Ngày tải lên :
15/12/2013, 13:15
... unprepared data shows an 81.8182% accuracy on the 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 ... model is needed, data extracts for training, test, and evaluation data sets can be prepared and models built on those data sets For any continuously operating model, the Prepared Information Environment ... dictionary information extracted and inferred from one or more data sets Such knowledge schema represent a form of “understanding” of the data Simple knowledge schema are currently being built from information...
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Data Mining: Introduction Lecture Notes for Chapter 1 Introduction to Data Mining ppt
Ngày tải lên :
15/03/2014, 09:20
... Tan,Steinbach, Kumar Introduction to Data Mining What is (not) Data Mining? What is not Data Mining? – Look up phone number in phone directory – Query a Web search engine for information about “Amazon” © ... Hypothesis Formation Mining Large Data Sets - Motivation There is often information “hidden” in the data that is not readily evident Human analysts may take weeks to discover useful information ... Introduction to Data Mining 28 Challenges of Data Mining Scalability Dimensionality Complex and Heterogeneous Data Data Quality Data Ownership and Distribution Privacy Preservation Streaming Data © Tan,Steinbach,...
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Data Mining: Data Lecture Notes for Chapter 2 Introduction to Data Mining potx
Ngày tải lên :
15/03/2014, 09:20
... to Data Mining Types of data sets Record – Data Matrix – Document Data – Transaction Data Graph – World Wide Web – Molecular Structures Ordered – Spatial Data – Temporal Data – Sequential Data ... Introduction to Data Mining 19 Ordered Data Spatio-Temporal Data Average Monthly Temperature of land and ocean © Tan,Steinbach, Kumar Introduction to Data Mining 20 Data Quality What kinds of data quality ... no information that is useful for the data mining task at hand – Example: students' ID is often irrelevant to the task of predicting students' GPA © Tan,Steinbach, Kumar Introduction to Data Mining...
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Data Mining: Exploring Data Lecture Notes for Chapter 3 Introduction to Data Mining potx
Ngày tải lên :
15/03/2014, 09:20
... Introduction to Data Mining separate face becomes a Star Plots for Iris Data Setosa Versicolour Virginica © Tan,Steinbach, Kumar Introduction to Data Mining 29 Chernoff Faces for Iris Data Setosa ... Tan,Steinbach, Kumar Introduction to Data Mining 11 Representation Is the mapping of information to a visual format Data objects, their attributes, and the relationships among data objects are translated ... Kumar Introduction to Data Mining 35 OLAP Operations: Data Cube The key operation of a OLAP is the formation of a data cube A data cube is a multidimensional representation of data, together with...
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Data Mining Classification: Basic Concepts, Decision Trees, and Model Evaluation Lecture Notes for Chapter 4 Introduction to Data Mining pptx
Ngày tải lên :
15/03/2014, 09:20
... same data! 10 © Tan,Steinbach, Kumar Introduction to Data Mining Decision Tree Classification Task Decision Tree © Tan,Steinbach, Kumar Introduction to Data Mining Apply Model to Test Data Test Data ... interesting information • Minimum (0.0) when all records belong to one class, implying most interesting information © Tan,Steinbach, Kumar Introduction to Data Mining 42 Examples for Computing ... other classification techniques for many simple data sets © Tan,Steinbach, Kumar Introduction to Data Mining 48 Example: C4.5 Simple depth-first construction Uses Information Gain Sorts Continuous...
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