Tamraparni Dasu, Theodore Johnson

Exploratory Data Mining and Data Cleaning (eBook, PDF)

• Format: PDF

Produktbeschreibung

* Written for practitioners of data mining, data cleaning and database management. * Presents a technical treatment of data quality including process, metrics, tools and algorithms. * Focuses on developing an evolving modeling strategy through an iterative data exploration loop and incorporation of domain knowledge. * Addresses methods of detecting, quantifying and correcting data quality issues that can have a significant impact on findings and decisions, using commercially available tools as well as new algorithmic approaches. * Uses case studies to illustrate applications in real life scenarios. * Highlights new approaches and methodologies, such as the DataSphere space partitioning and summary based analysis techniques. Exploratory Data Mining and Data Cleaning will serve as an important reference for serious data analysts who need to analyze large amounts of unfamiliar data, managers of operations databases, and students in undergraduate or graduate level courses dealing with large scale data analys is and data mining.

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Produktdetails

• Verlag: John Wiley & Sons
• Seitenzahl: 224
• Erscheinungstermin: 1. August 2003
• Englisch
• ISBN-13: 9780471458647
• Artikelnr.: 37301790

Autorenporträt

TAMRAPARNI DASU, PhD, and THEODORE JOHNSON, PhD, are both members of the technical staff at AT&T Labs-Research in Florham Park, New Jersey.

Inhaltsangabe

0.1 Preface. 1 Exploratory Data Mining and Data Cleaning: An Overview. 1.1
Introduction. 1.2 Cautionary Tales. 1.3 Taming the Data. 1.4 Challenges.
1.5 Methods. 1.6 EDM. 1.6.1 EDM Summaries - Parametric. 1.6.2 EDM Summaries
- Nonparametric. 1.7 EndtoEnd Data Quality (DQ). 1.7.1 DQ in Data
Preparation. 1.7.2 EDM and Data Glitches. 1.7.3 Tools for DQ. 1.7.4
EndtoEnd DQ: The Data Quality Continuum. 1.7.5 Measuring Data Quality.
1.8 Conclusion. 2 Exploratory Data Mining. 2.1 Introduction. 2.2
Uncertainty. 2.2.1 Annotated Bibliography. 2.3 EDM: Exploratory Data
Mining. 2.4 EDM Summaries. 2.4.1 Typical Values. 2.4.2 Attribute Variation.
2.4.3 Example. 2.4.4 Attribute Relationships. 2.4.5 Annotated Bibliography.
2.5 What Makes a Summary Useful? 2.5.1 Statistical Properties. 2.5.2
Computational Criteria. 2.5.3 Annotated Bibliography. 2.6 DataDriven
Approach - Nonparametric Analysis. 2.6.1 The Joy of Counting. 2.6.2
Empirical Cumulative Distribution Function (ECDF). 2.6.3 Univariate
Histograms. 2.6.4 Annotated Bibliography. 2.7 EDM in Higher Dimensions. 2.8
Rectilinear Histograms. 2.9 Depth and Multivariate Binning. 2.9.1 Data
Depth. 2.9.2 Aside: DepthRelated Topics. 2.9.3 Annotated Bibliography.
2.10 Conclusion. 3 Partitions and Piecewise Models. 3.1 Divide and Conquer.
3.1.1 Why Do We Need Partitions? 3.1.2 Dividing Data. 3.1.3 Applications of
Partitionbased EDM Summaries. 3.2 AxisAligned Partitions and Data Cubes.
3.3 Nonlinear Partitions. 3.3.1 Annotated Bibliography. 3.4 DataSpheres
(DS). 3.4.1 Layers. 3.4.2 Data Pyramids. 3.4.3 EDM Summaries. 3.4.4
Annotated Bibliography. 3.5 Set Comparison Using EDM Summaries. 3.5.1
Motivation. 3.5.2 Comparison Strategy. 3.5.3 Statistical Tests for Change.
3.5.4 Application - Two Case Studies. 3.5.5 Annotated Bibliography. 3.6
Discovering Complex Structure in Data with EDM Summaries. 3.6.1 Exploratory
Model Fitting in Interactive Response Time. 3.6.2 Annotated Bibliography.
3.7 Piecewise Linear Regression. 3.7.1 An Application. 3.7.2 Regression
Coefficients. 3.7.3 Improvement in Fit. 3.7.4 Annotated Bibliography. 3.8
OnePass Classification. 3.8.1 QuantileBased Prediction with Piecewise
Models. 3.8.2 Simulation Study. 3.8.3 Annotated Bibliography. 3.9
Conclusion. 4 Data Quality. 4.1 Introduction. 4.2 The Meaning of Data
Quality. 4.2.1 An Example. 4.2.2 Data Glitches. 4.2.3 Gaps in Time Series
Records. 4.2.4 Conventional Definition. 4.2.5 Times Have Changed. 4.2.6
Annotated Bibliography. 4.3 Updating DQ Metrics: Data Quality Continuum.
4.3.1 Data Gathering. 4.3.2 Data Delivery. 4.3.3 Data Monitoring. 4.3.4
Data Storage. 4.3.5 Data Integration. 4.3.6 Data Retrieval. 4.3.7 Data
Mining/Analysis. 4.3.8 Annotated Bibliography. 4.4 The Meaning of Data
Quality Revisited. 4.4.1 Data Interpretation. 4.4.2 Data Suitability. 4.4.3
Dataset Type. 4.4.4 Attribute Type. 4.4.5 Application Type. 4.4.6 Data
Quality - A Many Splendored Thing. 4.4.7 Annotated Bibliography. 4.5
Measuring Data Quality. 4.5.1 DQ Components and Their Measurement. 4.5.2
Combining DQ Metrics. 4.6 The DQ Process. 4.7 Conclusion. 4.7.1 Four
Complementary Approaches. 4.7.2 Annotated Bibliography. 5 Data Quality:
Techniques and Algorithms. 5.1 Introduction. 5.2 DQ Tools Based on
Statistical Techniques. 5.2.1 Missing Values. 5.2.2 Incomplete Data. 5.2.3
Outliers. 5.2.4 Time Series Outliers: A Case Study. 5.2.5 GoodnessofFit.
5.2.6 Annotated Bibliography. 5.3 Database Techniques for DQ. 5.3.1 What is
a Relational Database? 5.3.2 Why Are Data Dirty? 5.3.3 Extraction,
Transformation, and Loading (ETL). 5.3.4 Approximate Matching. 5.3.5
Database Profiling. 5.3.6 Annotated Bibliography. 5.4 Metadata and Domain
Expertise. 5.4.1 Lineage Tracing. 5.4.2 Annotated Bibliography. 5.5
Measuring Data Quality? 5.5.1 Inventory Building - A Case Study. 5.5.2
Learning and Recommendations. 5.6 Data Quality and Its Challenges.

Rezensionen

"Statisticians not conversant with today's statistical take on DQ should read this book...and be stimulated to do important research in DQ." (Journal of the American Statistical Association, March 2006) "...uniquely integrates several approaches for data cleaning and exploration..." (Journal of Statistical Computation & Simulation, April 2004) "...provides a uniquely integrated approach...for serious data analysts everywhere..." (Zentralblatt Math, Vol. 1027, 2004)