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KDD-Cup A Survey: 1997-2012

Special Thanks to Prof. Qiang YANG’s

course materials!(partly based on Xinyue Liu’s slides @SFU,

and Nathan Liu’s slides @hkust)Hong Kong University of Science and

Technology

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About ACM KDDCUP ACM KDD: Premiere Conference in knowledge

discovery and data mining ACM KDDCUP:

Worldwide competition in conjunction with ACM KDD conferences.

It aims at: showcase the best methods for discovering higher-level

knowledge from data. Helping to close the gap between research and industry Stimulating further KDD research and development

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Statistics

Participation in KDD Cup grew steadily

Average person-hours per submission: 204Max person-hours per submission: 910

Year 97 98 99 2000 2005 2011

Submissions 16 21 24 30 32 1000+

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KDD Cup 97 A classification task –

to predict financial services industry (direct mail response)

Winners Charles Elkan, a Prof

from UC-San Diego with his Boosted Naive Bayesian (BNB)

Silicon Graphics, Inc with their software MineSet

Urban Science Applications, Inc. with their software gain, Direct Marketing Selection System

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MineSet (Silicon Graphics Inc.) A KDD tool that combines data access,

transformation, classification, and visualization.

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KDD Cup 98: CRM Benchmark

URL: www.kdnuggets.com/meetings/kdd98/kdd-cup-98.html

A classification task – to analyze fund raising mail responses to a non-profit organization

Winners Urban Science Applications,

Inc. with their software GainSmarts.

SAS Institute, Inc. with their software SAS Enterprise Miner ™

Quadstone Limited with their software Decisionhouse ™

KDDCUP 1998 Results

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$70,000

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100%Maximum Possible Profit Line($72,776 in profits with 4,873 mailed)

GainSmarts

SAS/Enterprise Miner

Quadstone/Decisionhouse

Mail to Everyone Solution ($10,560 in profits with 96,367 mailed)

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ACM KDD Cup 1999 URL:

www.cse.ucsd.edu/users/elkan/kdresults.html

Problem To detect network intrusion and protect a computer network from unauthorized users, including perhaps insiders

Data: from DoD Winners

SAS Institute Inc. with their software Enterprise Miner.

Amdocs with their Information Analysis Environment

URL: www.cse.ucsd.edu/users/elkan/kdresults.html

Problem To detect network intrusion and protect a computer network from unauthorized users, including perhaps insiders

Data: from DoD Winners

SAS Institute Inc. with their software Enterprise Miner.

Amdocs with their Information Analysis Environment

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KDDCUP 2000: Data Set and Goal:

Data collected from Gazelle.com, a legwear and legcare Web retailer Pre-processedTraining set: 2 months Test sets: one month Data collected includes:

Click streams Order information

The goal – to design models to support web-site personalization and to improve the profitability of the site by increasing customer response.

Questions - When given a set of page views,

characterize heavy spenders

characterize killer pages characterize which

product brand a visitor will view in the remainder of the session?

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KDD Cup 2001 3 Bioinformatics Tasks

Dataset 1: Prediction of Molecular Bioactivity for Drug Design

half a gigabyte when uncompressed

Dataset 2: Prediction of Gene/Protein Function (task 2) and Localization (task 3)

Dataset 2 is smaller and easier to understand

7 megabytes uncompressed

A total of 136 groups participated to produce a total of 200 submitted predictions over the 3 tasks: 114 for Thrombin, 41 for Function, and 45 for Localization.

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2001 Winners Task 1, Thrombin:

Jie Cheng (Canadian Imperial Bank of Commerce).

Bayesian network learner and classifier

Task 2, Function: Mark-A. Krogel (University of Magdeburg).

Inductive Logic programming Task 3, Localization:

Hisashi Hayashi, Jun Sese, and Shinichi Morishita (University of Tokyo).

K nearest neighbor

Task 2: the genes of one

particular type of organism

A gene/protein can have more than one function, but only one localization.

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molecular biology : Two tasks Task 1: Document

extraction from biological articles

Task 2: Classification of proteins based on gene deletion experiments

Winners: Task 1: ClearForest

and Celera, USA Yizhar Regev and

Michal Finkelstein Task 2: Telstra

Research Laboratories, Australia

Adam Kowalczyk and Bhavani Raskutti

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2003 KDDCUP Information

Retrieval/Citation Mining of Scientific research papers

based on a very large archive of research papers

First Task: predict how many citations each paper will receive during the three months leading up to the KDD 2003 conference

Second Task: a citation graph of a large subset of the archive from only the LaTex sources

Third Task: each paper's popularity will be estimated based on partial download logs

Last Task: devise their own questions

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2004 Tasks and Results (Particle physics; plus protein homology

prediction ） Winners of the two tasks：

David S. Vogel, Eric Gottschalk, and Morgan C. Wang

Bernhard Pfahringer, Yan Fu, RuiXiang Sun, Qiang Yang, Simin He, Chunli Wang, Haipeng Wang, Shiguang Shan, Junfa Liu, Wen Gao.

Past KDDCUP Overview: 2005-2010Year Host Task Technique Winner

2005 Microsoft Web query categorization

Feature Engineering, Ensemble

HKUST （ Shen, Yang, etc.）

2006 Siemens Pulmonary emboli detection

Multi-instance, Non-IID sample, Cost sensitive, Class Imbalance, Noisy data

AT&T, Budapest University of Technology & Economics

2007 Netflix Consumer recommendation

Collaborative Filtering, Time series, Ensemble

IBM Research, Hungarian Academy of Sciences

2008 Siemens Breast cancer detection from medical images

Ensemble, Class imbalance, Score calibration

IBM Research,National Taiwan University

2009 Orange Customer relationship prediction in telecom

Feature selection,Ensemble

IBM Research, University of Melbourne

2010 PSLC Data Shop

Student performance prediction in E-Learning

Feature engineering, Ensemble,Collaborative filtering

National Taiwan University （ CJ Lin, S. Lin, etc.)

KDDCUP’11 Dataset 11 years of data Rated items are

Tracks Albums Artists Genres

Items arranges in a taxonomy Two tasks

Track 1 Track 2

#ratings 263M 63M

#items 625K 296K

#users 1M 249K

Items in a Taxonomy

Track 1 Details

Track 1 Highlights Largest publicly available dataset Large number of items (50 times more

than Netflix) Extreme rating sparsity (20 times more

sparse than Netflix) Taxonomy can help in combating

sparsely rated items. Fine time stamps with both date and

time allow sophisticated temporal modeling.

Track 2 Details

Track 2 Highlights Performance metric focus on ranking/

classification, which differs from traditional collaborative filtering.

No validation data provided, need to self-construct binary labeled data from rating data.

Unlike track 1, track 2 removed time stamps to focus more than long term preference rather than short term behaviors.

Submission Stats

Winners

Track 1 Track 2

1st place National Taiwan University National Taiwan University

2nd place Commendo (Netflix Prize Winnder)

Chinese Academy of Science,Hulu Labs

3rd place Hong Kong University of Science and Technology,Shanghai Jiaotong University

Commendo (Netflix Prize Winnder)

Chinese Teams at KDDCUP (NTU, CAS, HKUST)

Nathan Liu:

HKUST CSE

PhD student

KDDCUP 2012 Tencent Task 1: Micro-blog (Weibo) User

Recommendation Recommends a popular person / an organization / a group TO a user

Task 2: Ad click-through rate prediction from search log How often will an Ad be clicked by a user?

Task1: User recommendation UI

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Popular user recommendation

Task2: Ad click-through rate prediction

Ad click-through rate prediction

Task1 Data – User-Item Matrix

rec_log_train.txt / rec_log_test.txt

UserID ItemID ?followed TimeStamp ~75M records in training data ?followed: -1/1, user accepts the recommendation or not

In test data, it is filled with 0, to be predicted as -1/1. TimeStamp: unix-timestamp

Seconds from 70.1.1 00:00:00 (UTC time)

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2088948 1760350 -1 13183487852088948 1774722 -1 13183487852088948 786313 -1 1318348785601635 1775029 -1 1318348785601635 1902321 -1 1318348785601635 462104 -1 13183487851529353 1774509 -1 1318348786

Task2 Data – Main Data Table

Extremely Large Training Data ~150M records 10Gig raw csv file + keywords + userProfiles Predicting CTR to helps search provider to rank/price ads correctly

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Winners

Track 1 Track 2

1st place Shanghai Jiao Tong University

National Taiwan University

2nd place Steffen Rendle, University of Konstanz

Opera Solutions

3rd place Team FICO Model Builder Steffen Rendle, University of Konstanz

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Summary To place on top of KDDCUP requires

Team work Expertise in domain knowledge as well as

mathematical tools Often done by world famous institutes and

companies Recent trends:

Dataset increasingly more realistic Participants increasingly more professional Tasks are increasingly more difficult

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Summary

KDD Cup is an excellent source to learn the state-of-art KDD techniques

KDDCUP dataset often becomes the standard benchmark for future research, development and teaching

Top winners are highly regarded and respected

References: http://www.sigkdd.org/kddcup/index.php