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NatLibFi/Annif: Annif 0.49

Osma Suominen; juhoinkinen; Tuomo Virolainen; Bruno P. Kinoshita; Sara Veldhoen; Mats Sjöberg; Moritz Fürneisen; Philipp Zumstein; Robin Neatherway; monalehtinen

This release introduces the hyperopt CLI command for hyperparameter optimization. Initially it can only be used for finding optimal ensemble weights. The Web UI now follows the same visual style as the annif.org website. There are also some improvements to CLI commands, memory optimizations and bug fixes.

New features:

  • #240/#321/#414 Hyperparameter optimization of ensemble weights

Improvements:

  • #424/#426 New style for Web UI
  • #430 Define short form for CLI options and fix some of their docstrings
  • #428 Memory optimization: Avoid orgdouble allocation of NumPy arrays in eval operation

Maintenance:

  • #437 Upgrade TensorFlow to version 2.3.0 (from 2.2.0)

Bug fixes:

  • #431 Problem parsing timestamps from Maui Server
  • #432 Make modification timestamps timezone-aware

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