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8.
8© Copyright 2014
Pivotal. All rights reserved. Making sense of your “big data” Ÿ Large volumes of data may be difficult to understand – ~100 tables – Tens of thousands of columns Ÿ How do you build models that use all the data? Score all the data? Ÿ Where do you focus your effort? – Getting a rapid grasp of relevant fields is important – Scanning lots of data is slow, creating models with huge numbers of features is possible, but generally better to understand your data – Columns with little or no variation or only null values
9.
9© Copyright 2014
Pivotal. All rights reserved. What Can “Small Data” Scientists Bring on Their “Big Data” Journey? http://factspy.net/the-difference- between-geeks-vs-nerds/
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10© Copyright 2014
Pivotal. All rights reserved. What Can “Small Data” Scientists Bring on Their “Big Data” Journey? Flat files Distributed computing HDFS In-memory modelbuilding Cloud computing MapReduce Command-line tools Databases Command-line tools Small Data Big Data Many tools and approaches are being adapted to big data technologies
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11© Copyright 2014
Pivotal. All rights reserved. Drilling into the San Andreas Fault at Parkfield California. Credit: Stephen H. Hickman, USGS Data: The New Oil • Oil & gas generates large amounts of data from sensors enabling data-driven approaches to improve operations Predictive maintenance • Motivation: Failure costs estimated at $150,000/incident (billions annually)* • Goals – Early warning system – Insights into prominent features impacting operation and failure – Reduction of non-productive drill time – Reduced incidents *http://blog.pivotal.io/pivotal/case-studies-2/data-as-the-new-oil-producing-value-for-the-oil-gas-industry
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12© Copyright 2014
Pivotal. All rights reserved. How are models built using sensor data? Integrating & Cleansing Feature Building Modeling • A failure occurred at the end of this run BitpositionRPM ROPWOB
13.
13© Copyright 2014
Pivotal. All rights reserved. How are models built using sensor data? Integrating & Cleansing Feature Building Modeling • A failure occurred at the end of this run • Taking a window of time prior to failure, what features should we extract (e.g. variance of RPM, max bit position velocity)? RPM
14.
14© Copyright 2014
Pivotal. All rights reserved. How can noisy data create meaningful models?WOB Time WOB ROP
15.
15© Copyright 2014
Pivotal. All rights reserved. How can noisy data create meaningful models?WOB Time • Deriving signal noisy sensor data requires data cleansing
16.
16© Copyright 2014
Pivotal. All rights reserved. How can noisy data create meaningful models?WOB Time • Deriving signal noisy sensor data requires data cleansing ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ●● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ●● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ●● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ●● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● 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● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● • Deriving signal noisy sensor data requires data cleansing WOB Time
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● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● A cleansing approach: use average across a window • Deriving signal noisy sensor data requires data cleansing • Window functions in SQL allow us to perform smoothing seamlessly, at-scale WOB Time
19.
19© Copyright 2014
Pivotal. All rights reserved. How can noisy data create meaningful models?Temperature Time • Deriving signal noisy sensor data requires data cleansing • Window functions in SQL allow us to perform smoothing seamlessly, at-scale WOB Time
20.
20© Copyright 2014
Pivotal. All rights reserved. How can noisy data create meaningful models?Temperature Time • Deriving signal noisy sensor data requires data cleansing • Window functions in SQL allow us to perform smoothing seamlessly, at-scale • Test many hypotheses in parallel to examine if features have an effect on potency WOB Time
21.
21© Copyright 2014
Pivotal. All rights reserved. How are models built using sensor data? Integrating & Cleansing Feature Building Modeling Predict occurrence of equipment failure in a chosen future time window Predict remaining life of equipment Predict Rate-of-Penetration
22.
22© Copyright 2014
Pivotal. All rights reserved. How are models built using sensor data? Integrating & Cleansing Feature Building Modeling Predict occurrence of equipment failure in a chosen future time window • Logistic Regression • Elastic Net Regularized Regression (Binomial) • Support Vector Machines Predict remaining life of equipment Predict Rate-of-Penetration
23.
23© Copyright 2014
Pivotal. All rights reserved. How are models built using sensor data? Integrating & Cleansing Feature Building Modeling Predict occurrence of equipment failure in a chosen future time window • Logistic Regression • Elastic Net Regularized Regression (Binomial) • Support Vector Machines Predict remaining life of equipment • Cox Proportional Hazards Regression Predict Rate-of-Penetration
24.
24© Copyright 2014
Pivotal. All rights reserved. How are models built using sensor data? Integrating & Cleansing Feature Building Modeling Predict occurrence of equipment failure in a chosen future time window • Logistic Regression • Elastic Net Regularized Regression (Binomial) • Support Vector Machines Predict remaining life of equipment • Cox Proportional Hazards Regression Predict Rate-of-Penetration • Linear Regression • Elastic Net Regularized Regression (Gaussian) • Support Vector Machines
25.
25© Copyright 2014
Pivotal. All rights reserved. Calling MADlib Functions: Fast Training, Scoring Ÿ MADlib allows users to easily and create models without moving data out of the systems – Model generation – Model validation – Scoring (evaluation of) new data Ÿ All the data can be used in one model Ÿ Built-in functionality to create of multiple smaller models (e.g. classification grouped by feature) Ÿ Open-source lets you tweak and extend methods, or build your own SELECT madlib.linregr_train( 'houses’,! 'houses_linregr’,! 'price’,! 'ARRAY[1, tax, bath, size]’);! MADlib model function Table containing training data Table in which to save results Column containing dependent variableFeatures included in the model
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26© Copyright 2014
Pivotal. All rights reserved. Calling MADlib Functions: Fast Training, Scoring Ÿ MADlib allows users to easily and create models without moving data out of the systems – Model generation – Model validation – Scoring (evaluation of) new data Ÿ All the data can be used in one model Ÿ Built-in functionality to create of multiple smaller models (e.g. classification grouped by feature) Ÿ Open-source lets you tweak and extend methods, or build your own SELECT madlib.linregr_train( 'houses’,! 'houses_linregr’,! 'price’,! 'ARRAY[1, tax, bath, size]’,! ‘bedroom’);! MADlib model function Table containing training data Table in which to save results Column containing dependent variableFeatures included in the model Create multiple output models (one for each value of bedroom)
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27© Copyright 2014
Pivotal. All rights reserved. Calling MADlib Functions: Fast Training, Scoring Ÿ MADlib allows users to easily and create models without moving data out of the systems – Model generation – Model validation – Scoring (evaluation of) new data Ÿ All the data can be used in one model Ÿ Built-in functionality to create of multiple smaller models (e.g. classification grouped by feature) Ÿ Open-source lets you tweak and extend methods, or build your own SELECT madlib.linregr_train( 'houses’,! 'houses_linregr’,! 'price’,! 'ARRAY[1, tax, bath, size]’);! SELECT houses.*, madlib.linregr_predict(ARRAY[1,tax,bath,size], m.coef! )as predict ! FROM houses, houses_linregr m;! MADlib model scoring function Table with data to be scored Table containing model
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28© Copyright 2014
Pivotal. All rights reserved. Ÿ The interpreter/VM of the language ‘X’ is installed on each node of the HAWQ Cluster • Data Parallelism: - PL/X piggybacks on HAWQ’s MPP architecture • Allows users to write HAWQ/PostgreSQL functions in the R/Python/Java, Perl, pgsql or C languages Standby Master … Master Host SQL Interconnect Segment Host Segment Segment Segment Host Segment Segment Segment Host Segment Segment Segment Host Segment Segment PL/X : X in {pgsql, R, Python, Java, Perl, C etc.}
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Pivotal. All rights reserved. Parallelized R in Pivotal via PL/R: An Example SQL & R Ÿ Parsimonious – R piggy-backs on Pivotal’s parallel architecture Ÿ Minimize data movement Ÿ Build predictive model for each state in parallel TN Data CA Data NY Data PA Data TX Data CT Data NJ Data IL Data MA Data WA Data TN Model CA Model NY Model PA Model TX Model CT Model NJ Model IL Model MA Model WA Model
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30© Copyright 2014
Pivotal. All rights reserved. Parallelized R in Pivotal via PL/R: An Example Ÿ With placeholders in SQL, write functions in the native R language Ÿ Accessible, powerful modeling framework
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31© Copyright 2014
Pivotal. All rights reserved. Parallelized R in Pivotal via PL/R: An Example Ÿ Execute PL/R function Ÿ Plain and simple table is returned
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32© Copyright 2014
Pivotal. All rights reserved. Aggregate and obtain final prediction Each tree makes a prediction Parallelized R in Pivotal via PL/R: Parallel Bagged Decision Trees
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33© Copyright 2014
Pivotal. All rights reserved. Genome Wide Association Study
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Pivotal. All rights reserved. Genome Wide Association Study SNP1
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35© Copyright 2014
Pivotal. All rights reserved. Genome Wide Association Study SNP1
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36© Copyright 2014
Pivotal. All rights reserved. Genome Wide Association Study SNP2
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37© Copyright 2014
Pivotal. All rights reserved. Genome Wide Association Study SNP3
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38© Copyright 2014
Pivotal. All rights reserved. In-database genome-wide association study Network Interconnect Master Severs Segment Severs SQL & R Indiv Covariates 1 2 10 1 F 23 18 2 M 39 41 3 M 50 23 N F 19 24 COVARIATES SNP 1 2 M AA CC TT AT CG TT AA GG TC TT CG TC
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39© Copyright 2014
Pivotal. All rights reserved. In-database genome-wide association study Network Interconnect Master Severs Segment Severs SNP1 SNP2 SNPM SQL & R Indiv Covariates 1 2 10 1 F 23 18 2 M 39 41 3 M 50 23 N F 19 24 Indiv SNP Geno 1 1 AA 2 1 AT 3 1 AA 1 2 CC 2 2 CG 3 2 GG N M TC COVARIATES GENOTYPES
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40© Copyright 2014
Pivotal. All rights reserved. In-database genome-wide association study Network Interconnect Master Severs Segment Severs SNP1 SNP2 SNPM Pval1 Pval2 PvalM SQL & R Indiv Covariates 1 2 10 1 F 23 18 2 M 39 41 3 M 50 23 N F 19 24 Indiv SNP Geno 1 1 AA 2 1 AT 3 1 AA 1 2 CC 2 2 CG 3 2 GG N M TC COVARIATES GENOTYPES
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41© Copyright 2014
Pivotal. All rights reserved. In-database genome-wide association study Network Interconnect Master Severs Segment Severs SNP1 SNP2 SNPM Pval1 Pval2 PvalM SQL & R Indiv Covariates 1 2 10 1 F 23 18 2 M 39 41 3 M 50 23 N F 19 24 Indiv SNP Geno 1 1 AA 2 1 AT 3 1 AA 1 2 CC 2 2 CG 3 2 GG N M TC SNP P-value 1 2.34x10-21 2 0.395 3 7.15x10-17 M 0.000142 COVARIATES GENOTYPES RESULTS
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42© Copyright 2014
Pivotal. All rights reserved. In-database genome-wide association study Network Interconnect Master Severs Segment Severs SNP1 SNP2 SNPM Pval1 Pval2 PvalM SQL & R Indiv Covariates 1 2 10 1 F 23 18 2 M 39 41 3 M 50 23 N F 19 24 Indiv SNP Geno 1 1 AA 2 1 AT 3 1 AA 1 2 CC 2 2 CG 3 2 GG N M TC SNP P-value 1 2.34x10-21 2 0.395 3 7.15x10-17 M 0.000142 COVARIATES GENOTYPES RESULTS • In-database computation of ~1 million mutations for thousands of individuals occurs rapidly and in parallel • Results are easily manipulated and explored
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43© Copyright 2014
Pivotal. All rights reserved. Visualize and analyze genomics data without movement Generate relevant plots using tools like Tableau immediately after parallel statistical analysis in-database on Pivotal technology
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44© Copyright 2014
Pivotal. All rights reserved. http://blog.pivotal.io/data-science-pivotal Check out the Pivotal Data Science Blog!
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