This is a concept that has gained increasing attention for its ability to blend retrieval (search) with language model generation to enhance the quality and relevance of generated text: To enable conversational AI model questions with web data, or API obtained data, or other “out there in the world” data you want to query on.
1. Understanding RAG:
RAG is a hybrid model that combines the capabilities of pre-trained language models with an external knowledge retrieval component.
The primary goal of RAG is to augment the generation process with relevant information retrieved from a large corpus of text, such as Wikipedia or a domain-specific dataset. Generally obtained via API Calls.
2. The Components of RAG:
RAG typically has two main components:
The Retriever: This part of the model is responsible for fetching relevant pieces of text from a large database or corpus in response to a query. The query, in this context, is often a prompt or a question for which we seek to generate an answer or continuation. The retriever uses techniques such as vector similarity search, where both the query and the documents are represented as vectors in a high-dimensional space.
The Generator: After retrieving relevant documents, the generator, which is often a transformer-based neural network like GPT or BERT, is used to synthesize information and generate coherent and contextually appropriate text. The generator has the ability to integrate the information from the retrieved documents into the text it produces.
3. How RAG Works:
The process of using RAG for text generation typically occurs in several stages:
The query provided by the user is inputted to the AI MODEL.
The retriever component processes this query and identifies relevant documents.
These documents are then passed along to the generator.
The generator produces an output by conditioning its responses on both the query and the retrieved documents.
4. Applications of RAG:
RAG has a wide range of applications, including but not limited to:
Question Answering (QA): RAG can provide detailed and well-informed answers to questions by retrieving information that may not be contained in the pre-trained model's parameters but exists in the external data source. {the Outside World).
Chatbots and Conversational Agents: By accessing a broad repository of conversational contexts and facts, RAG enhances the quality of dialogue generated by chatbots.
Content Creation: Writers and content creators can use RAG to enhance their work with informative and topical content sourced from a vast array of information available in external databases.
5. Advantages and Limitations:
One of the main advantages of RAG is its ability to leverage external knowledge sources, making the output much more informative and relevant. However, there are challenges as well; for instance, it is dependent on the quality of the retrieved documents, and integrating external knowledge into the generation process can be complex.
6. Future Perspectives:
Research continues into optimizing the retriever and generator components, handling the trade-off between speed and accuracy in retrieval, and finding efficient ways to integrate external knowledge.
BIg Data / JSON : The 5 Vs:
Volume: a lot!
Veracity: how truthful is it
Velocity: coming in very quickly.
Value: how important is the fact in our query context
Variety: in many different modalities and formats (Video, image, text, sound, Geo location, JSON (BPEL)
In conclusion, RAG represents a significant step forward in the quest to create AI models that can understand and generate human-like text by blending the power of language models with the vast information available in external data sources.
As we move forward, we can expect to see more sophisticated versions of RAG, which will push the boundaries of what is achievable with AI-driven view points and perspectives that we create of the World.
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