Nils Reimers on Cohere Search AI - Weaviate Podcast #63!
Aug 17, 2023
auto_awesome
Nils Reimers, AI researcher, discusses the collaboration between Weaviate and Cohere, temporal queries, metadata extraction, long document representation, and future directions for Retrieval-Augmented Generation in the Weaviate Podcast. They also explore the challenges of search analysis, fine-tuning language models, and user preferences in search.
The Cohere re-rank model improves search quality by providing highly relevant results for complex queries and domains with multiple facets or complex information.
The Cohere re-rank model addresses the limitations of embedding models by using a different technology that assesses relevance based on a collection of documents, resulting in improved search quality for complex queries.
The Cohere re-rank model ensures the accuracy and usefulness of search results by providing constantly updated information through an easy-to-update API, overcoming the limitations of outdated data in embedding models.
Deep dives
Cohere's integration with WeVA and announcement of the cohere re-rank model
The podcast episode starts with a discussion about the exciting integration between Cohere and WeVA, specifically focusing on the announcement of the cohere re-rank model. The cohere re-rank model is a powerful tool that allows users to easily add re-ranking capabilities to their search systems. It simplifies the process of re-ranking documents and provides highly relevant results. The model can be used both by users who are not yet on WeVA and those who are already using WeVA for semantic search. It is particularly effective for complex queries and helps improve search quality, especially in domains with multiple facets or complex information.
Challenges in semantic search and the benefits of the cohere re-rank model
The podcast episode delves into the challenges faced in semantic search, particularly with embedding models, such as producing accurate embeddings for complex queries. The cohere re-rank model offers an effective solution to these challenges by using a different technology that assesses the relevance of documents based on a collection of documents provided as input. This approach improves search quality, especially for complex queries with multiple aspects or intricate requirements. The cohere re-rank model demonstrates a strong boost in search quality, particularly in complex domains where embedding models struggle to produce accurate results.
The necessity of constantly updated information in embedding models
The dangers of relying on outdated data in embedding models are discussed in the episode. The limitations of using embeddings for semantic search are highlighted, as these models lack a temporal understanding and can produce inaccurate results when confronted with queries about time-sensitive topics. Embedding models often retrieve information from outdated datasets, resulting in erroneous answers or inadequate relevance. The cohere re-rank model aims to address this issue by providing constantly updated information through an easy-to-update API, ensuring the accuracy and usefulness of search results.
The importance of context in long documents and challenges in encoding it
The challenges posed by long documents in semantic search and embedding models are explored in the podcast. Long documents can present difficulties in understanding contextual information and breaking down the content into individual facts. The contextualization problem arises when important information, such as names or time references, is not explicitly mentioned in the text itself. Decontextualization techniques are discussed as a way to overcome these challenges and make the information more accessible and relevant for effective search and comprehension.
The future direction of search and the development of a foundation model
The podcast episode ends with a discussion about the future of search and the development of a new foundation model. The goal is to address the existing challenges in search such as non-documents, temporal information, multiple fields, multi-modality, popularity, and recency. The foundation model aims to provide solutions in these areas, introducing significant advancements and innovations. The focus is on improving search quality, offering diverse search capabilities, and enabling efficient and accurate results across various domains and requirements.
Hey everyone! Thank you so much for watching the 63rd Weaviate Podcast, I couldn't be more excited to welcome Nils Reimers back to the podcast!! Similar to our debut episode together, we began by describing the latest collaboration of Weaviate and Cohere (episode 1, new multilingual embedding models; episode 2, rerankers!), and then continued into some of the key questions around search technology. In this one, we discussed the importance of temporal queries and metadata extraction, long document representation, and future directions for Retrieval-Augmented Generation! I hope you enjoy the podcast, as always I am more than happy to answer any questions or discuss any ideas you have about the content in the podcast! Thank you so much for watching!
Learn more about Cohere Rerankers and how to use it in Weaviate here: https://weaviate.io/developers/weaviate/modules/retriever-vectorizer-modules/reranker-cohere
Chapters
0:00 Introduction
1:30 Cohere Rerankers
7:02 Dataset Curation at Cohere
10:30 New Rerankers and XGBoost
14:35 Temporal Queries
17:55 Metadata Extraction from Unstructured Text Chunks
21:52 Soft Filters
24:58 Chunking and Long Document Representation
38:00 Retrieval-Augmented Generation
45:40 Retrieval-Aware Training to solve Hallucinations
49:50 Learning to Search and End-to-End RAG
54:35 RETRO
59:25 Foundation Model for Search
Get the Snipd podcast app
Unlock the knowledge in podcasts with the podcast player of the future.
AI-powered podcast player
Listen to all your favourite podcasts with AI-powered features
Discover highlights
Listen to the best highlights from the podcasts you love and dive into the full episode
Save any moment
Hear something you like? Tap your headphones to save it with AI-generated key takeaways
Share & Export
Send highlights to Twitter, WhatsApp or export them to Notion, Readwise & more
AI-powered podcast player
Listen to all your favourite podcasts with AI-powered features
Discover highlights
Listen to the best highlights from the podcasts you love and dive into the full episode