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Kraken Release Notes: January 22, 2021

With a new year comes enhanced Kraken functionality, including improvements to Driver Influence calculations, optimized Random Forest algorithm settings as well as more flexible Data Pipeline find and replace options.

Updates in this release

  • Kraken leverages the latest scikit-learn permutation importance to calculate Driver Influence for your binary, multi-class and regression models, using the automatic holdout data from your input dataset. Driver Influence is calculated independently for each algorithm in your analysis. All new analyses will use the new Driver Influence calculations automatically; you can also retrain your existing models and compare new Driver Influence values to those calculated previously. Click here to get all the details on Driver Influence.
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  • We've updated two hyperparameters used in Random Forest algorithms to better accommodate a wide variety of input datasets, resulting in improved predictive accuracy and less chance of overfitting. All new models will use the new hyperparameters automatically; you can retrain existing models to generate a new version of your analysis that uses the new hyperparameters. 
    • The number of estimators is 100 (previously it was 10)
    • max_depth is 10 (previously it was infinite)
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  • When adding a Data Pipeline "Find and Replace" step on string fields, you have two new options for more flexible and robust find and replace actions:
    • Allow partial matches (to search on part of a string)
    • Replace text with empty string (to remove text)
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  • We've also implemented several bug fixes as well as performance and interface improvements.

Reminder: If Kraken is misbehaving, check KIKI first.

Registered Kraken users have access to KIKI, a.k.a. "Kraken Important Known Issues". If you're experiencing an issue with Kraken, KIKI is your first stop to determine if we're aware of the issue. Where possible, we provide suggested workarounds while we work to eliminate issues. KIKI will be updated as we eliminate issues through Kraken product updates, as well as when new issues are identified.

Reminder: SONAR© Guide content is just a click away!

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As a Kraken user, you have access to SONAR© Guide, the proven training methodology from Big Squid and your key to learning everything you need to know to use Kraken effectively and become a citizen data scientist hero in the process. A link to the SONAR© Guide content library is accessible whenever you access Kraken help screens; just look for the SONAR© Guide logo on the right-hand side. It's also available in the SONAR© Guide section of support.bigsquid.com.

 

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