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CHOOSING ML ALGORITHMS
Orange County Advance Analytics Meetup, June 2019
Chuck Chekuri, Director Data Science, SkygenUSA
CRITERIA FOR CHOOSING
• PROBLEM AT HAND
• MACHINE LEARNING TYPE
• ALGORITHM TYPE
• AVAILABLE DATA
TYPES OF ML PROBLEMS
• FORECASTING
• MEANINGFUL GROUPING
• INTERPRETATION
• AUTOMATION
PROBLEM AT HAND
MACHINE LEARNING TYPE
TYPES OF ALGORITHMS
TYPES
 TEXT
 NUMERIC
 CATEGORICAL
 DESCRETE
 CONTINUOUS
 IMAGE
 SOUND
 NUMERIC
 TIME SERIES
CHARECTERISTICS
 LOCATION ( CLOUD/DB/FILE)
 STATIC VS STREAMING
 HISTORICAL VS REAL TIME
 FREQUENCY OF CHANGE
 MACHINE GENERATED
 TRANSACTIONAL
 DEIDENTIFIED
 SUMMARIZED
QUALITY
 ACCURACY
 MISSING
 COMPLETENESS
 SYSTEMIC ERRORS
 SAMPLE SIZE
 CONFIDENCE LEVEL
 BOOSTABLITY
 CONVERTIBLITY
AVAILABLE DATA
NEED FOR AN ALGORITHM
REGRESSION CLUSTERING
IDEA OF A DISTANCE
CHOOSING AN ML TYPE
RECOMMENDER SYSTEMS
VIEWERS & SHOWS
Straight forward relationship between
viewers and shows with number of
episodes watched.
USERS
Count the number of common episodes
between viewers.
More the number, greater the similarity
between users.
SHOWS
Count the number of common
viewership between shows.
More the number, greater the similarity
between shows.
The more similar two viewers are, the more likely they will watch similar shows.
CHEAT SHEETS
https://download.microsoft.com/download/A/6/1/A613E11E-8F9C-424A-B99D-65344785C288/microsoft-machine-learning-algorithm-cheat-sheet-v7.pdf
SCIKIT-LEARN CHEAT SHEET
https://scikit-learn.org/stable/tutorial/machine_learning_map/index.html

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Ocaa ml algorithms