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Mallet v2.1 Release Notes

Release Date: 2019-06-13 // almost 6 years ago

  • 🚀 This is a serialization-breaking release due to the switch to HPPC, which affects feature alphabets.

    ➕ Added

    • Nonnegative Matrix Factorization
    • 👯 Word embeddings (word2vec clone)
    • 👍 PagedInstanceList supports iteration correctly
    • lebiathan added stratified sampling of InstanceList
    • This file!

    🔄 Changed

    • 🔀 All merging and propagation of sampling statistics for topic modeling is now multi-threaded (if num-threads is more than 1), leading to a 5-10% speed boost.
    • 🚚 The primitive collections library (for example mapping String to int) has been changed from GNU trove to Carrotlabs HPPC. This change removes all GNU dependencies.
    • The license has been changed from CPL to Apache.
    • 👉 Use of VMID for unique identifier for serialized objects. (Breaks serialization!)
    • 🛠 Many small fixes suggested by ErrorProne.
    • 🚚 Unneeded imports removed.

    ✂ Removed

    • 🚚 The Matrix2 class has been removed.
    • 📦 GRMM has been moved to a separate package.

    🛠 Fixed

    • 🛠 Te Rutherford fixed a bug where non-String instance IDs were being cast as Strings.

Previous changes from v2.0.8

  • 🔄 Changed

    • ⏪ The default format for document-topic proportions now prints values for all topics in order. The earlier file format (sparse listing of topic/proportion) can be restored using command line options.