Potential roadmap items 2016+:Some potential roadmap ideas for 2018+ below.  For more details please see the JIRAs. 

Predictive models

• Multi-class SVM 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1037

• Mixed effects modeling 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-987

• Gradient boosted machines
• Novelty detection using 1-class SVM  MADLIB-990
• Mixed effects modeling  MADLIB-987
• Factorization machines
• k-nearest neighbors (kNN)  MADLIB-927
• Geographically Weighted Regression (GWR) MADLIB-1023
• MCMC Probit and Logit regression
• Gaussian Mixture Model using Expectation Maximization (EM) algorithm algorithm 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-410

• Multi-layer Perceptron
• Hierarchical clustering

Graph

• Shortest path  MADLIB-992
• Standard traversal
  • depth first search
  • breadth first search
  • topological sort
• One mode projection (converting a bi-partitite graph of user-item graph to user-user or item-item graph)
• Connected components
• Page rank
• Hierarchical graph cut
• Between-ness centrality
• Minimum spanning tree

Utilities

• Hierarchical clustering
• k-NN improvements 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1061

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1181

• Deep learning

Graph

• Personalized PageRank 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1084

• Betweenness centrality 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1121

• Graph cut 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1074

• Triangle counting 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1125

• Minimum spanning tree
• Eigenvector centrality 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1123

• APSP performance improvements 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1155

Utilities

• Balanced datasets 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1168

  
  Summary - add more statistics 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1167

• Anonymization  

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-911

• URI tools  

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-910

• Path functions (phase 2)  MADLIB-977
• Prediction metrics  MADLIB-907
• Sessionization  MADLIB-909
• Pivoting  MADLIB-908
• Anonymization  MADLIB-911
• URI tools  MADLIB-910
• Stratified sampling  MADLIB-986

Usability

• Expand coverage for PivotalR
• Expand coverage for PMML export??? (or perhaps switch to PFA???)
• Interface improvement and consistency
• Interface improvement and consistency for 2.0 release (does not need to be backward compatible) 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1157

  Implement an interface using named parameters
• Python API

Performance and scalability

• Work around PostgreSQL 1 GB field size limit  MADLIB-991
• GPU support

Platform

• Mini-batching 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1048

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1037

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1200

• Improve decision tree and random forest performance for run-time and memory usage 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1057

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-976

Platforms and Frameworks

• PostgreSQL 10 support 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1185

• Support modern versions of gcc 

  Jira
  server ASF JIRA serverId 5aa69414-a9e9-3523-82ec-879b028fb15b key MADLIB-1025

• Tensorflow support, or another deep learning framework
• GPU
• Support for PostgreSQL 9.5 and 9.6  MADLIB-944
• Tensorflow support