What's new

Here's what's new in each version of the Splunk Machine Learning Toolkit:

Version 4.2.0

Features and improvements

• Introduction of the DensityFunction algorithm for anomaly detection.
• Introduction of the StateSpaceForecast algorithm for time series analysis.
• Introduction of the ICA algorithm for feature extraction.
• Introduction of a 3D Scatter Plot visualization. Use this visualization to see clusters of similar data points, or to drill down to see singular data points.
• Experiment Assistant alerts have been updated. When creating an alert you now go directly to the Save As Alert where you can select from standard Trigger Conditions, as well as new Machine Learning Conditions.
• Cloud customers can now use GitHub to add more algorithms via the Splunk GitHub for Machine learning app. Cloud customers need to create a support ticket to have this app installed.
• Wasserstein distance is now available as a statstest scoring method.
• Pairwise distances scoring now fully supports the wildcard (*) character.
• Pairwise distances scoring now supports the Kolmogorov-Smirnov (2 samples) and Wasserstein distance metrics.
• The following score commands now support the wildcard (*) character in 1-to-n cases: Silhouette score, Accuracy score, F1-score, Precision score, Recall score, R2 score, Explained variance score, Mean absolute error score, Mean squared error score, T-test (2 independent samples) score, T-test (2 related samples) score.
• Models created using the PCA algorithm can be inspected with the summary command.
• Models created using the FieldSelector algorithm can be inspected with the summary command.
• Version 1.4 of the Python for Scientific Computing add-on is now available in Splunkbase. Version 1.4 of the PSC add-on is required to run certain new features including the DensityFunction algorithm for anomaly detection.

Linux 32-bit support is not available should you upgrade to version 1.4 of the Python for Scientific Computing add-on.

Version 4.1.0

Features and improvements

• The wildcard character (*) is now enabled for single array scoring methods. For more information, see Using the score command.
• Introduction of the Hashing vectorizer algorithm.
• Introduction of the Pairwise distances scoring method.
• Introduction of the Imputer preprocessing algorithm.
• When using the BernoulliNB algorithm, GaussianNB algorithm, and MLPClassifier algorithm you can now inspect trained models using the summary command.
• The variance parameter is now available when using the PCA algorithm.
• The anomaly_score parameter is now available when using the LocalOutlierFactor algorithm.
• The fit_intercept and normalize parameters are now available when using the Lasso algorithm.
• The Box plot visualization option has been updated and improved.
• The Machine Learning Toolkit as deployed on Splunk Enterprise now sends anonymized data to Splunk Inc. Learn more here.
• An updated version of the Machine Learning Toolkit Quick Reference Guide now available. Use as a handy cheat sheet of ML-SPL commands and machine learning algorithms in the Splunk Machine Learning Toolkit.
• We've also published a new document to capture the most Frequently Asked Questions regarding the Machine Learning Toolkit.

Version 4.0.0

Features and improvements

• A number of new demos have been added to the Showcase tab based on customer requests.
• The Experiment History tab now captures the model history from scheduled retraining.
• Introduction of the LocalOutlierFactor algorithm. Accessing this algorithm requires an upgrade to PSC version 1.3.
• The MLPClassifier algorithm now supports partial_fit for incremental learning.
• Introduction of the score command to validate models and statistical tests for any use case.
• Introduction of k-fold cross validation as a method to help test for model overfitting.
• A new tab called Settings is now part of the MLTK nav bar. Users with admin access can work within this interface to configure the toolkit settings of the fit and apply commands. Ensure you know the impact of setting changes by adding the ML-SPL Performance App for the Machine Learning Toolkit to your setup.
• Customers can now share and reuse custom algorithms in the Splunk Community for MLTK on GitHub.
• The Splunk MLTK Connector for Apache Spark™ allows users to leverage their own Spark clusters for large data sets. This is a limited availability release. Reach out to Splunk's ML Spark team for LAR application access.
• The Splunk MLTK Container for TensorFlow™ is an add-on docker container, allowing multiple local GPU/ CPU acceleration. This is available via Splunk's Professional Services department.
• For bug fixes, see Fixed issues.

Version 3.4.0

Features and improvements

• Version 1.3 of the Python for Scientific Computing add-on is now available in Splunkbase. Upgrading to version 3.4 of the MLTK requires upgrading to PSC version 1.3 .
• Introduction of the MLPClassifier algorithm. Accessing this algorithm requires an upgrade to PSC version 1.3.
• Introduction of Boxplot Chart to the search visualization options.
• Models created within the Experiments framework can now be published and more easily used outside of the MLTK environment.
• For bug fixes, see Fixed issues.

Upgrading to version 3.4.0 of the MLTK requires upgrading to version 1.3 of the Python for Scientific Computing add-on. Two previous versions of the MLTK (3.2.0 and 3.3.0) will successfully operate on version 1.2 or 1.3 of the PSC add-on. However, users cannot access new features in the 3.4.0 MLTK without updating to that version.

Version 3.3.0

Features and improvements

• Introduction of another preprocessing method - TFIDF (term frequency-inverse document frequency).
• Addition of the RobustScaler algorithm.
• For bug fixes, see Fixed issues.

Version 3.4.0 of the MLTK will require an update to Version 1.3 of Python for Scientific Computing. The release for the MLTK 3.4.0 will coincide with the availability of PSC 1.3 in Splunkbase.

Version 3.2.0

Features and improvements

• Introduction of the Experiment Management Framework. This framework ties the experiment, along with any alerts or scheduled trainings, together. Users can now see which alerts or scheduled trainings are assigned to any experiment, and which experiment has or has not undergone pre-processing steps. See Using the Splunk Machine Learning Toolkit and Experiments.
• Relocation within the Machine Learning Toolkit of the previously free-standing Assistant module. This version of Assistants now lives under the Legacy tab of the MLTK bar. It is recommended that you do not create Models via this version of Assistants, and instead create Models via the Experiments Management Framework. Doing so will ensure that you can both:
  • Create Alerts and Scheduled Trainings on the saved Experiment
  • See Alerts and Scheduled Trainings organized by Experiment
• The Splunk Machine Learning Toolkit version 3.2 does not support Splunk Enterprise version 6.4 or earlier.
• For bug fixes, see Fixed issues.

Version 3.1.0

Features and improvements

• The FieldSelector algorithm can now be used in the preprocessing panel. See FieldSelector in the Machine Learning Toolkit User Guide.
• The maximum number of distinct values supported for categorical fields, formerly 100, can now be configured for both features fields and target fields.
  • Use max_distinct_cat_values to change the setting for feature fields, the input to your ML algorithm.
  • Use max_distinct_cat_values_for_classifiers to change the setting for a target field, the field you are trying to predict, in classifier algorithms.
• The Splunk Machine Learning Toolkit has a new clustering algorithm:
  • X-Means
• For bug fixes, see Fixed issues.

Version 3.0.0

Features and improvements

Introduced a new interface for managing models. You can now easily see what types of models you have, inspect the settings of each model (such as which variables were used to train it), and view or update each model's sharing settings. For more information, see Manage models.

Version 2.4.0

Features and improvements

• You must update any custom algorithms from earlier releases (before 2.4.0) to use the algos.conf file. See Register an algorithm in the ML-SPL API Guide.
• You can now package and distribute custom algorithms as apps. See Package an algorithm for Splunkbase in the ML-SPL API Guide.
• The Splunk Machine Learning Toolkit has two new algorithms.
  • Gradient Boosting Classifier
  • Gradient Boosting Regressor
• For bug fixes, see Fixed issues.

Version 2.3.0

Features and improvements

• The Splunk Machine Learning Toolkit's custom search commands are now fully integrated with Splunk's knowledge object permissions. For more details, see Models.

• Entries in the "Load Existing Settings" tab are now unique per-user instead of being shared with all users. Entries created prior to version 2.3 will continue to be accessible by all users.

• Two new algorithms have been added:
  • ACF (autocorrelation function)
  • PACF (partial autocorrelation function)
• The Forecast Time Series assistant now allows for the selection of the ARIMA forecasting algorithm. Additional panels have been added for inspecting properties unique to ARIMA models.

Version 2.2.1

This version contains bug fixes. See Fixed issues for details.

Version 2.2.0

Features and improvements

• The preprocessing feature has been redesigned and is offered in the Predict Numeric Fields, Predict Categorical Fields, and Clustering Numeric Events assistants. See Preprocessing for information.

• The ML-SPL API has been updated to make it easier for developers and partners to import custom algorithms in order to extend the capabilities of the Splunk Machine Learning Toolkit. See ML-SPL API Guide for information.

• A new video overview of what's new in versions 2.1.0 and 2.2.0 of the Splunk Machine Learning Toolkit.

Version 2.1.0

Features and improvements

Enhancements to the Detect Numeric Outliers assistant:

• You can now specify one or more fields to split by (up to 5). Specifying one or more split by fields enables you to see the values of the field you are analyzing grouped by the values of the split by fields in visualizations.
• Enhanced visualizations including a new Data Distribution histogram that shows the number of data points within the threshold and the number of data points outside the threshold.

For more information, see Detect Numeric Outliers.

Version 2.0.1

The Downsampled Line Chart custom visualization now supports the same drilldown actions as the built-in Line Chart visualization.

Version 2.0.0

Features and improvements

• The app has been renamed to "Machine Learning Toolkit."
• New Cluster Numeric Events assistant that steps you through how to perform clustering on your own data. This assistant includes the ability to preprocess data by applying StandardScaler, PCA, or KernelPCA methods. See Cluster Numeric Events.
• Updated examples for the Cluster Numeric Events showcase.
• A streaming_apply setting has been added to the mlspl.conf file, which allows you to run the apply command on your indexers. For details, see Use your indexers to apply models.
• The Predict Numeric Fields and Predict Categorical Fields assistants now support multiple algorithms.
• A new visualization type has been added: Scatterplot matrix. This visualization is available in the Cluster Numeric Events assistant.
• The Machine Learning Toolkit app has a walk-through tour and each assistant has its own walk-through tour.
• A link to machine learning video tutorials has been added to the top menu bar and the Showcase page.
• Tooltips have been added for the fields in each of the assistants.

Algorithms

• The SGDClassifier algorithm is now supported. For details, see Algorithms.
• The SGDRegressor algorithm is now supported. For details, see Algorithms.
• The ARIMA algorithm is now supported. For details, see Algorithms.
• The LogisticRegression algorithm supports a new parameter probabilities=<true|false>. For details, see Algorithms.
• Summary support has been added to the RandomForestClassifier and RandomForestRegressor algorithms. For details, see Algorithms.
• The BernoulliNB, GaussianNB, Birch, and StandardScaler algorithms support a new parameter partial_fit=<true|false>. For details, see Algorithms.

Version 1.3.0

Features and improvements

• You can now create alerts within the Machine Learning Toolkit from some of the panels in the assistants. Alerts can be viewed under Scheduled Jobs > Alerts.
• You can now schedule model training in the Predict Numeric Fields and Predict Categorical Fields assistants by clicking the icon on the right side of the Fit Model button.

Schedules can be viewed under Scheduled Jobs > Scheduled Training.

• The Training/Test split can now be set to a 100/0 split (no split).

Version 1.2.0

Features and improvements

• The DecisionTreeClassifier and DecisionTreeRegressor algorithms are now supported. For details, see Algorithms.
• The Detect Numeric Outliers assistant now includes an Include current point checkbox to support the "current" parameter of the streamstats command.
• The Predict Numeric Fields assistant has an improved Actual vs. Predicted Line Chart, which replaces the Actual vs. Predicted Overlay.
• Two macros in the Forecast Time Series assistant have been merged into one macro.
• The max_features parameter of the RandomForestClassifier and RandomForestRegressor algorithms now accepts values with the float data type.
• The Remove from history confirmation dialog box has been improved.
• A basic framework has been implemented for displaying Bootstrap's modal dialog boxes in the Machine Learning Toolkit and Showcase UI.

Version 1.1.0

Features and improvements

• The visualizations in the Cluster Events showcase have been updated.
• The Predict Numeric Fields and Predict Categorical Fields assistants now allow you to enter wildcards in Fields to use for predicting. For example, to specify both the Packets Received and Packets Sent fields, enter "Packets*". Wildcards are case sensitive.
• The Select All and Select None buttons on the Predict Numeric Fields and Predict Categorical Fields assistants have been moved inside the dropdown list.

Algorithms

• The KernelRidge regression algorithm is now supported. For details, see Algorithms.

Bug fixes

The following bugs were fixed:

• Changing the time range or search mode on assistant search bars will now re-run the search in the search bar, the same as the default Search page in Splunk Enterprise.
• Custom visualizations will now display time stamps correctly when the event time differs from browser time.
• Caching issues have been fixed, and the app no longer loads old versions of resources after an update.
• Exit points in assistants now correctly have the same time range as that assistant's search bar

Version 1.0.0

This is the first release of the Machine Learning Toolkit and Showcase app.