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ISAX
Mark Chan, Hacker & Data Scientist, H2O.ai
ISAX
• Time series data compression algorithm, implemented on H2O’s distributed
architecture
• Find groups of similar time series patterns in one billion
○ http://blog.h2o.ai/2016/11/indexing-1-billion-time-series-with-h2o-and-isax/
• ISAX applied to fields such as IoT, Finance, BioInformatics,Image/Sound
processing.
○ http://www.cs.ucr.edu/~eamonn/SAX.htm
• Compress your time series data and run:
• ○ Clustering
• ○ Classification
• ○ Anomaly Detection
• ○ Predictive analytics
Good H2O code examples
● https://github.com/h2oai/h2o-3/blob/master/h2o-core/src/main/java/water/rapi
ds/ast/prims/reducers/AstCumu.java
● https://github.com/h2oai/h2o-3/blob/master/h2o-core/src/main/java/water/rapi
ds/ast/prims/timeseries/AstIsax.java
● http://blog.h2o.ai/2014/03/h2o-architecture/

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ISAX

  • 1. ISAX Mark Chan, Hacker & Data Scientist, H2O.ai
  • 2. ISAX • Time series data compression algorithm, implemented on H2O’s distributed architecture • Find groups of similar time series patterns in one billion ○ http://blog.h2o.ai/2016/11/indexing-1-billion-time-series-with-h2o-and-isax/ • ISAX applied to fields such as IoT, Finance, BioInformatics,Image/Sound processing. ○ http://www.cs.ucr.edu/~eamonn/SAX.htm • Compress your time series data and run: • ○ Clustering • ○ Classification • ○ Anomaly Detection • ○ Predictive analytics
  • 3.
  • 4.
  • 5.
  • 6. Good H2O code examples ● https://github.com/h2oai/h2o-3/blob/master/h2o-core/src/main/java/water/rapi ds/ast/prims/reducers/AstCumu.java ● https://github.com/h2oai/h2o-3/blob/master/h2o-core/src/main/java/water/rapi ds/ast/prims/timeseries/AstIsax.java ● http://blog.h2o.ai/2014/03/h2o-architecture/