Classical IR | Stanford CS224U Natural Language Understanding | Spring 2021 скачать в хорошем качестве

Classical IR | Stanford CS224U Natural Language Understanding | Spring 2021

For more information about Stanford’s Artificial Intelligence professional and graduate programs, visit: https://stanford.io/ai To learn more about this course visit: https://online.stanford.edu/courses/c... To follow along with the course schedule and syllabus visit: https://web.stanford.edu/class/cs224u/ Omar Khattab PhD student in Computer Science at Stanford University Professor Christopher Potts Professor and Chair, Department of Linguistics Professor, by courtesy, Department of Computer Science 0:00 Introduction 1:23 How do we conduct ranked retrieval? 3:29 Term-Document Weighting: Intuitions 5:00 Term-Document Weighting: TF-IDF 6:44 Term-Document Weighting: BM25 7:25 Efficient Retrieval: Inverted Indexing 8:50 Beyond term matching in classical IR... 10:45 IR Evaluation 15:27 Test Collections: TREC 16:31 Test Collections: MS MARCO Ranking Tasks 18:12 Test Collections: Other Benchmarks 20:01 IR Effectiveness Metrics: Success & MRR 21:13 IR Effectiveness Metrics: Precision & Recall 21:50 IR Effectiveness Metrics: DCG