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Novelty detection using 1-class SVM https://issues.apache.org/jira/browse/ MADLIB-990
Mixed effects modeling https://issues.apache.org/jira/browse/ MADLIB-987
k-nearest neighbors (kNN) https://issues.apache.org/jira/browse/ MADLIB-927
MCMC Probit and Logit regression
Factorization machines
Gaussian Mixture Model using Expectation Maximization (EM) algorithm
Multi-layer Perceptron
Geographically Weighted Regression (GWR)

Graph

Shortest path https://issues.apache.org/jira/browse/ 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

Path functions (phase 2) https://issues.apache.org/jira/browse/ MADLIB-977
Prediction metrics https://issues.apache.org/jira/browse/ MADLIB-907
Sessionization https://issues.apache.org/jira/browse/ MADLIB-909
Pivoting https://issues.apache.org/jira/browse/ MADLIB-908
Anonymization https://issues.apache.org/jira/browse/ MADLIB-911
URI tools https://issues.apache.org/jira/browse/ MADLIB-910
Stratified sampling https://issues.apache.org/jira/browse/ MADLIB-986

Usability

Expand coverage for PivotalR
Expand coverage for PMML export
Interface improvement and consistency
Implement an interface using named parameters
Python API

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Work around PostgreSQL 1 GB field size limit https://issues.apache.org/jira/browse/ MADLIB-991

Platform

Support for PostgreSQL 9.5 https://issues.apache.org/jira/browse/ MADLIB-944