CSE 572 Data Mining

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CSE 572 Data Mining

• Huan Liu, CSE, CEAS, ASU
• http//www.public.asu.edu/huanliu/DM05S/cse572.ht
  ml

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CSE 591

• Contents of basic and advanced topics
• Classification, Clustering, Association, and
  Applications
• Format - A semi-seminar course with a lot of
  assignments and Work
• Paper reading, discussion, project, presentation
• Assessment
• Class participation, assignments, project
  proposal, presentations, exam(s)

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• You
• TA Yin Ding, yin.ding_at_asu.edu
• Me Huan Liu, huanliu_at_asu.edu
• Where Brickyard 566
• When see on the class website, or by appointment
• No pain, no gain if you cannot commit your
  time to this class, think again if you should
  take it
• MyASU will be used, so make sure your email
  address is correct wont miss important
  announcement

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Course Format

• An experiment since Fall 2000 about effective
  teaching of graduate data mining
• Research papers - the main categories to be found
  on the course web site
• You can choose one of the textbooks listed. A
  reference list is an entering point for you to
  access related subjects
• Everyone is expected to read research papers and
  participate in class discussion
• Selected research paper presentation
• Project presentations will be evaluated during
  presentation

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Point distribution (tentative)

• Projects (30)
• Reading/presentation assignment (10)
• Exam(s) (40)
• Assignments (20), and class participation,
  quizzes (up to 10 extra credit)
• Late penalty, YES, increased expoentially.
• Academic integrity (http//www.public.asu.edu/hua
  nliu/conduct.html)

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Research paper reading

• Each group will be responsible to select one
  paper and find additional different papers based
  on the group size (3 4 students each group)
• All are expected to search for and read the
  selected papers.
• What is it about (e.g., key idea, basic
  algorithm)?
• What are points to discuss and improve?
• What can we do with it?
• What to submit? (see more on the class website)
• A brief report that describes the above and 2
  questions suitable for quizzes/tests with
  solutions
• A set of presentation slides for 20 minutes
• Due date 2/11 Friday, midnight, use digital drop
  box
• The grade will be given based on (1) quality of
  additional papers, (2) slides for presentation,
  (3) the report, and (4) oral presentation will be
  selected among the best submissions and
  presenters will be given extra credit based on
  presentation
• Earliest presentation will likely start from
  2/17/04

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Project

• Proposal
• Proposal presentation, discussion, revision
• A project that can be completed in a semester
• Project
• Class presentation and/or demo
• Report
• One key goal of this course is to take advantage
  of your intelligence and experience to create
  something useful and with impact

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Topic Distribution (tentative)
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Categories of interests (including design and
implementation)

• Data and application security
• Data mining and privacy
• Data reduction and selection
• Streaming data reduction
• Dealing with large data (column- row-wise)
• Selection bias
• Learning algorithms
• Ensemble methods
• Incremental learning
• Active learning and co-training
• Bioinformatics for CBS 598 or others
• A discussion board was created

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Your first assignment

• Think about what you want to accomplish.
• List 2 your areas of interests (dont be
  restricted by the previous list).
• Pick an area of interest and choose a general
  topic for paper presentation.
• Complete the above and submit it in the 3rd class
  (next Tuesday 1/25).

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2nd Assignment due in two weeks

• First, choose your category of interest
• Second, form presentation groups (3-4 a group)
• Third, each group picks a paper from the given
  list of papers and find additional 2 high-quality
  relevant papers
• Submit it through myASU
• TA will help you and compile a list of all papers
  at the end
• Write a summary for each paper including
• What is it about
• Why is it significant and relevant
• Where is it published and when

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Introduction

• The need for data mining
• Data mining
• Web mining (log, link, content)
• Applications

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What is data mining

• Data mining is
• extraction of useful patterns from data sources,
  e.g., databases, texts, web, image.
• the analysis of (often large) observational data
  sets to find unsuspected relationships and to
  summarize the data in novel ways that are both
  understandable and useful to the data owner.

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Patterns (1)

• Patterns are the relationships and summaries
  derived through a data mining exercise.
• Patterns must be
• valid
• novel
• potentially useful
• understandable

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Patterns (2)

• Patterns are used for
• prediction or classification
• describing the existing data
• segmenting the data (e.g., the market)
• profiling the data (e.g., your customers)
• Detection (e.g., intrusion, fault, anomaly)

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Data (1)

• Data mining typically deals with data that have
  already been collected for some purpose other
  than data mining.
• Data miners usually have no influence on data
  collection strategies.
• Large bodies of data cause new problems
  representation, storage, retrieval, analysis, ...

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Data (2)

• Even with a very large data set, we are usually
  faced with just a sample from the population.
• Data exist in many types (continuous, nominal)
  and forms (credit card usage records, supermarket
  transactions, government statistics, text,
  images, medical records, human genome databases,
  molecular databases).

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Typical DM tasks

• Classification
• mining patterns that can classify future data
  into known classes.
• Association rule mining
• mining any rule of the form X ?? Y, where X and Y
  are sets of data items.
• Clustering
• identifying a set of similar groups in the data

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• Sequential pattern mining
• A sequential rule A? B, says that event A will
  be immediately followed by event B with a certain
  confidence
• Deviation/anomaly/exception detection
• discovering the most significant changes in data
• Data visualization using graphical methods to
  show patterns in data.
• High performance computing
• Bioinformatics

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Why data mining

• Rapid computerization of businesses produces huge
  amounts of data
• How to make best use of data?
• A growing realization knowledge discovered from
  data can be used for competitive advantage and to
  increase business intelligence.

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• Make use/sense of your data assets
• Many interesting things you want to find cannot
  be found using database queries
• find me people likely to buy my products
• Who are likely to respond to my promotion
• Fast identify underlying relationships and
  respond to emerging opportunities

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Why now

• The data is abundant.
• The data is being collected or warehoused.
• The computing power is affordable.
• The competitive pressure is increasingly.
• Data mining tools have become available.
• New challenges
• New data types evolve
• New applications emerge

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DM fields

• Data mining is an emerging multi-disciplinary
  field
• Statistics
• Machine learning
• Databases
• Visualization
• OLAP and data warehousing
• High-performance computing
• ...

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Summary

• What is data mining?
• KDD - knowledge discovery in databases
  non-trivial extraction of implicit, previously
  unknown and potentially useful information
• Why do we need data mining?
• Wide use of computer systems - data explosion -
  knowledge is power but were data rich,
  knowledge poor useful, understandable and
  actionable knowledge ...
• Data mining is not a plug-and-play, so we are not
  done yet and need to continue this class

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An Overview of KDD Process (Guess which is which)
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Web mining an application

• The Web is a massive database
• Semi-structured data
• XML and RDF
• Web mining
• Content
• Structure
• Usage