Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Data Stream Mining Applications: Toward Inductive DSMS CS240B Notes by Carlo Zaniolo UCLA Computer Science Department Spring 2008 1 Data Stream Mining and DSMS Mining Data Stream: an emerging area of important applications Many fast & light algorithms developed for mining data streams: Ensembles, Moment, SWIM, etc. Deployemnt of these algorithms on data streams a challenge To deal with bursty arrivals, synopses, QoS, scheduling Analysts want to focus on high-level mining tasks, leaving such lower-level issues to the DSMS Integration of mining methods and DSMS technology is needed—but it faces difficult research challenges: 21-Mar-08 Data mining: a big problem for SQL-based DBMS http://wis.cs.ucla.edu 2 Road Map for Next Three Weeks Data Mining query languages and systems The Inductive DBMS dream and the reality: Oracle, IBM DB2, MS DMX, Weka Fast& Light Algorithms for Mining Data Streams Classifiers and Classifier Ensembles, Clustering methods, Association Rules, Time series Supporting these Algorithms in a DSMS 21-Mar-08 Data Mining Query Languages and support for the mining process http://wis.cs.ucla.edu 3 The DM Experience for DBMS: from dreams to reality Initial attempts to support mining queries in relational DBMS: Unsuccessful OR-DBMS do not fare much better [Sarawagi’ 98]. In 1996, a ‘high-road’ approach was proposed by Imielinski & Mannila who called for a quantum leap in functionality based on: High-level declarative languages for Data Mining (DM) Technology breakthrough in DM query optimization. The research area of Inductive DBMS was thus born Inspiring significant work: DMQL, Mine Rule, MSQL, … 21-Mar-08 Suffer from limited generality and performance issues. http://wis.cs.ucla.edu 4 DB2 Intelligent Miner Model creation Training: CALL IDMMX.DM_buildClasModelCmd('IDMMX.CLASTASKS', 'TASK', 'ID', 'HeartClasTask', 'IDMMX.CLASSIFMODELS', 'MODEL', 'MODELNAME', 'HeartClasModel' ); Prediction Stored procedures and virtual mining views Outside the DBMS (like Cache Mining) Data transfer delays http://www-306.ibm.com/software/data/iminer/ 21-Mar-08 http://wis.cs.ucla.edu 5 DB2 Intelligent Miner Model creation Training CALL IDMMX.DM_buildClasModelCmd('IDMMX.CLASTASKS', 'TASK', 'ID', 'HeartClasTask', 'IDMMX.CLASSIFMODELS', 'MODEL', 'MODELNAME', 'HeartClasModel' ); Prediction Stored procedures and virtual mining views Outside the DBMS (like Cache Mining) Data transfer delays http://www-306.ibm.com/software/data/iminer/ 21-Mar-08 http://wis.cs.ucla.edu 6 Oracle Data Miner Algorithms PL/SQL with extensions for mining Models as first class objects Adaptive Naïve Bayes SVM regression K-means clustering Association rules, text, mining, etc. Create_Model, Prediction, Prediction_Cost, Prediction_Details, etc. http://www.oracle.com/technology/products/bi/odm/index.html 21-Mar-08 http://wis.cs.ucla.edu 7 OLE DB for DM (DMX) Model creation Create mining model MemCard_Pred ( CustomerId long key, Age long continuous, Profession text discrete, Income long continuous, Risk text discrete predict) Using Microsoft_Decision_Tree; Training Insert into MemCard_Pred OpenRowSet( “‘sqloledb’, ‘sa’, ‘mypass’”, ‘SELECT CustomerId, Age, Profession, Income, Risk from Customers’) Prediction Join Select C.Id, C.Risk, PredictProbability(MemCard_Pred.Risk) From MemCard_Pred AS MP Prediction Join Customers AS C Where MP.Profession = C.Profession and AP.Income = C.Income AND MP.Age = C.Age; 21-Mar-08 http://wis.cs.ucla.edu 8 Defining a Mining Model Define The format of “training cases” (top-level entity) Attributes, Input/output type, distribution Algoritms and parameters Example CREATE MINING MODEL CollegePlanModel ( StudentID Gender ParentIncome Encouragement CollegePlans LONG TEXT LONG TEXT TEXT KEY, DISCRETE, NORMAL CONTINUOUS, DISCRETE, DISCRETE PREDICT ) USING Microsoft_Decision_Trees 21-Mar-08 http://wis.cs.ucla.edu 9 Training INSERT INTO CollegePlanModel (StudentID, Gender, ParentIncome, Encouragement, CollegePlans) OPENROWSET(‘<provider>’, ‘<connection>’, ‘SELECT StudentID, Gender, ParentIncome, Encouragement, CollegePlans FROM CollegePlansTrainData’) 21-Mar-08 http://wis.cs.ucla.edu 10 Prediction Join SELECT t.ID, CPModel.Plan FROM CPModel PREDICTION JOIN OPENQUERY(…,‘SELECT * FROM NewStudents’) AS t ON CPModel.Gender = t.Gender AND CPModel.IQ = t.IQ CPModel 21-Mar-08 ID Gender IQ Plan ID Gender IQ NewStudents http://wis.cs.ucla.edu 11 OLE DB for DM (DMX) (cont.) Mining objects as first class objects Schema rowsets Other features Mining_Models Mining_Model_Content Mining_Functions Column value distribution Nested cases http://research.microsoft.com/dmx/DataMining/ 21-Mar-08 http://wis.cs.ucla.edu 12 Summary of Vendors’ Approaches Built-in library of mining methods Limitations Script language or GUI tools Closed systems (internals hidden from users) Adding new algorithms or customizing old ones -Difficult Poor integration with SQL Limited interoperability across DBMSs Predictive Markup Modeling Language (PMML) as a palliative 21-Mar-08 http://wis.cs.ucla.edu 13 PMML Predictive Markup Model Language XML based language for vendor independent definition of statistical and data mining models Share models among PMML compliant products A descriptive language Supported by all major vendors 21-Mar-08 http://wis.cs.ucla.edu 14 PMML Example 21-Mar-08 http://wis.cs.ucla.edu 15 The Data Mining World According to The Data Mining Software Vendors Market Competition Disclaimer Disclaimer This presentation contains preliminary information that may be changed substantially prior to final commercial release of the software described herein. The information contained in this presentation represents the current view of Microsoft Corporation on the issues discussed as of the date of the presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information presented after the date of the presentation. This presentation is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this presentation. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this information does not give you any license to these patents, trademarks, copyrights, or other intellectual property. © 2005 Microsoft Corporation. All rights reserved. Major Data Mining Vendors • Platforms IBM Oracle SAS • Tools SPSS Angoss KXEN Megaputer FairIsaac Insightful Competition Product SQL Server 2005 Oracle 10g IBM SAS SQL Server Analysis Services Oracle Data Mining DB2 Intelligent Miner, WebSphere Enterprise Miner http://otn.oracle.com/pr oducts/bi/odm/odminin g.html http://www306.ibm.com/software/data/imin er/ http://www.sas.com/technologies/analytics/data mining/miner/factsheet.pdf Link API OLEDB/DM, DMX, XMLA, ADOMD.Net Java DM, PL/SQL SQL MM/6 based on UDF, SQL SPROC SAS Script Algorithms 7 (+2) 8 6 8+ Text Mining Yes Yes Yes Yes Marketing Pages N/A 18 10 Dozens Client Tools Embeddable Viewers, Reporting Services Analysis tools, Webbased targeted reports WebSphere Portal (vertical solution) None Discoverer Excel AddIn IM Visualization Distribution Included Additional Package Additional Packages Separate Product Target Developers Developers DB2 IM Scoring module is for developers; Other modules are for analysts. Analysts Strengths Powerful yet simple API Good credibility with enterprise customers Integration with other BI technologies New GUI, Leader of JDM API Mature, Market Leader. Extensive customization and modelling abilities. Robust, industry tested and accepted algorithms and methodologies. Export to DB2 Scoring. New GUI CRM Integration Mature product (6 years). Good service model. Scoring inside relational engine. Strong partnership with SAS Not in-process with relational engine Lacking statistical functions Poor Analyst experience API overly complex High price. Standard Functionality. Poor API (SQL MM). Confusing product line. Expensive. Proprietary. Customer relations range from congenial to hostile. Weaknesses Inconsistent Major DM Vendors SAS Institute (Enterprise Miner) IBM (DB2 Intelligent Miner for Data) Oracle (ODM option to Oracle 10g) SPSS (Clementine) Unica Technologies, Inc. (Pattern Recognition Workbench) Insightsful (Insightful Miner) KXEN (Analytic Framework) Prudsys (Discoverer and its family) Microsoft (SQL Server 2005) Angoss (KnowledgeServer and its family) DBMiner (DBMiner) etc… Platforms IBM Oracle SAS, Tools SPSS Angoss KXEN Megaputer FairIsaac Insightful ORACLE Strengths Oracle Data Mining (ODM) Integrated into relational engine – Performance benefits – Management integration – SQL Language integration ODM Client – “Walks through” Data Mining Process – Data Mining tailored data preparation – Generates code Integration into Oracle CRM – “EZ” Data Mining for customer churn, other applications Full suite of algorithms – Typical algorithms, plus text mining and bioinformatics Nice marketing/user education ORACLE Weaknesses Additional Licensing Fees (base $400/user, $20K proc) Confusing API Story – Certain features only work with Java API – Certain features only work with PL/SQL API – Same features work differently with different API’s Difficult to use – Different modeling concepts for each algorithm Poor connectivity – ORACLE only SAS • Entrenched Data Mining Leader Market Share Mind Share • “Best of Breed” Always will attract the top ?% of customers • Overall poor product Only for the expert user (SAS Philosophy) Integration of results generally involves source code • Integrated with ETL, other SAS tools • Partnership with IBM Model in SAS, deploy in DB2 Our View ... 21-Mar-08 Progress toward high level data models and integration with SQL, but Closed systems, Lacking in coverage and user-extensibility. Not as popular as dedicated, stand-alone DM systems, such as Weka. http://wis.cs.ucla.edu 24 Weka A comprehensive set of DM algorithms, and tools. Generic algorithms over arbitrary data sets. Independent on the number of columns in tables. Open and extensible system based on Java. These are the features that we want in our Inductive DSMS---starting from SQL rather than Java! 21-Mar-08 http://wis.cs.ucla.edu 25 References [Imielinski’ 96] Tomasz Imielinski and Heikki Mannila. A database perspective on knowledge discovery. Commun. ACM, 39(11):58–64, 1996. Carlo Zaniolo: Mining Databases and Data Streamswith Query Languages and Rules: Invited Talk, Fourth International Workshop on Knowledge Discovery in Inductive Databases, KDID 2005. 21-Mar-08 http://wis.cs.ucla.edu 26 Thank you! 21-Mar-08 http://wis.cs.ucla.edu 27