Capitalization and Punctuation Restoration: a Survey
It provides a comprehensive overview for researchers and practitioners working on text pre-processing in NLP, but it is incremental as a survey paper.
This survey reviews historical and state-of-the-art techniques for restoring punctuation and capitalization in text, addressing challenges in sources like speech recognition outputs and social media.
Ensuring proper punctuation and letter casing is a key pre-processing step towards applying complex natural language processing algorithms. This is especially significant for textual sources where punctuation and casing are missing, such as the raw output of automatic speech recognition systems. Additionally, short text messages and micro-blogging platforms offer unreliable and often wrong punctuation and casing. This survey offers an overview of both historical and state-of-the-art techniques for restoring punctuation and correcting word casing. Furthermore, current challenges and research directions are highlighted.