Breaking Changes

• Changed riseapi mode response format (#1585).
• Removed support for TensorFlow v1.x: removed all TF-based components, removed TF mentions from documentation, default train class replaced with torch_trainer (#1574).
• TensorFlow-based models were replaced with the PyTorch-based ones, some models were renamed, various models and components were removed.
  • Replaced Models:
    • Entity Linking (#1516)
    • Context Question Answering (#1539)
    • NER (#1545)
    • Classifier models (#1565)
  • Removed Models
    • Classifiers, Doc Retrieval, Go-Bot, Neural Morphological Tagging, NER, ODQA, Ranking, Spelling Correction, Context Question Answering (#1523)
    • ASR, TTS (#1526)
    • ELMO (#1533)
    • Chinese Context Question Answering (#1534)
    • Ranking Models (#1537)
    • Go-Bot (#1544)
    • KBQA, Multitask BERT (#1560)
    • Intent Catcher (#1564)
    • Morpho/Syntax Models (#1573)
  • Removed Components
    • Connectors to: Telegram, Microsoft Bot Framework, Amazon Alexa, Yandex Alice (#1548)
    • Various components (#1563)
• Removed serialization mechanism

Major Features and Improvements

• Python 3.8/3.9 support (#1525).
• Added nested configs overwriting mechanism (#1561).
• Added case-agnostic distil NER for DREAM (#1570).
• Added DeepPavlov Topics Classifier model (#1584).
• Added Russian SuperGLUE models (#1577).
• Added external metrics support (#1546).
• Added Jupyter Notebook support to documentation (#1592).

Bug Fixes and Other Changes

• Requirements updated (#1578).
• Models deprecation mechanism (#1547).
• Uploaded DeepPavlov BERT models with MLM & NSP heads parameters (#1502).
• Fixed en_core_web_sm loading error (#1524)
• Fixed NER models table view (#1529)
• Removed special version of Transformers library for certain components (#1532)
• Fixed tests (#1543)
• Updated library output during model training (#1572)
• Fixed ConnectionResetError handling in simple_download (#1586)
• Minor fixes in KBQA models (#1591)
• Added iterations count and speed output during training (#1593)
• Fixed datasets version (#1596)