This tool is a Retrieval-Augmented Generation (RAG) system designed to enhance document retrieval and content generation. It integrates semantic search with generative capabilities, enabling efficient retrieval of relevant documents and the generation of contextually accurate responses. The system leverages OpenAI and HuggingFace embeddings for transforming documents into vector representations, supported by scalable databases such as Chroma, PostgreSQL (PGVector), and Elasticsearch. This flexible architecture allows for powerful, context-aware search and generation, making it suitable for a variety of use cases such as question answering, document summarization, and intelligent search. The tool combines state-of-the-art technologies to offer an adaptable and high-performance solution for document processing and retrieval.
The repository for this system, including the code, datasets, and supplementary materials, can be accessed at:
The proposed system utilizes a Retrieval-Augmented Generation (RAG) model that involves two main components: a retrieval process and a generative process. Initially, documents are preprocessed and transformed into vector embeddings using either OpenAI Embeddings or HuggingFace embeddings. These embeddings represent the semantic content of the documents and facilitate efficient similarity-based retrieval.
The system supports multiple database types for storing and searching embeddings, including Chroma, PostgreSQL with PGVector, and Elasticsearch. By selecting the appropriate database via configuration, the system enables scalable and flexible storage for large document sets, enhancing retrieval accuracy and performance.
For the retrieval phase, the system performs semantic searches to retrieve the most relevant documents based on user queries. The generative phase uses these retrieved documents to create precise, contextually aware answers, ensuring that responses are tailored to the user's needs. The framework also incorporates document chunking to handle long documents and optimize the retrieval process by splitting them into smaller, manageable sections.
The system is highly configurable, supporting different embedding models and databases, which allows for seamless adaptation to various use cases, from question-answering to document summarization.
Despite significant advancements in document retrieval and content generation, existing approaches often rely on keyword-based search methods that fail to capture the true semantic meaning of queries. Traditional search techniques lack the ability to generate contextually accurate responses, leading to lower retrieval accuracy and less relevant results. Moreover, while some RAG-based solutions exist, they are often constrained by limited scalability, rigid database dependencies, or inadequate memory capabilities that hinder long-term contextual understanding.
This system aims to bridge these gaps by integrating multiple embedding models and vector databases, ensuring flexibility and scalability. Additionally, the inclusion of advanced memory features enhances personalization and contextual retention, surpassing the capabilities of existing solutions. The proposed approach provides a more adaptable and efficient document retrieval and generation framework that addresses these unaddressed problems in the current research landscape.
The proposed RAG framework demonstrated robust performance in semantic document retrieval and answer generation tasks. Through multiple test scenarios, the system consistently retrieved relevant documents, even when dealing with large corpora. The use of embeddings allowed for deep semantic understanding, leading to high-quality, context-aware responses.
In comparison to traditional keyword-based search methods, the RAG framework significantly improved the accuracy of retrieved results. Additionally, the generative model was able to produce answers that were more coherent and contextually relevant to the queries posed, outperforming other baseline models in terms of response quality.
The system's ability to scale with different databases also proved effective, as it efficiently handled varying data sizes and types without sacrificing performance. Whether using Chroma, PostgreSQL, or Elasticsearch, the retrieval process remained fast and reliable, confirming the system's flexibility and adaptability.
The combination of semantic search and generation ensures that the system can serve a wide range of applications, from automated customer support to more complex knowledge-based systems.
The repository contains a modularized document retrieval system with two interfaces:
Both systems support fetching documents from local files, Confluence pages, and MantisBT issues, and use vector databases (Chroma, PostgreSQL or Elasticsearch) for efficient querying.
Document Sources:
*.pdf, *.txt, *.html)Vector Databases:
pgvectorEmbeddings:
Query Options:
Session Management:
pgvector)While the system demonstrates strong performance, there are several limitations to consider:
Embedding Bias: The quality and accuracy of the retrieved results depend on the embedding model used, which may carry biases inherent in the training data.
Scalability Constraints: Although the system supports multiple vector databases, handling extremely large-scale data efficiently may require additional optimizations.
Document Type Restrictions: The system currently focuses on text-based document retrieval. Support for more complex document types (e.g., heavily formatted PDFs, scanned documents) may require additional preprocessing steps.
For production deployment, the following factors should be considered:
Infrastructure Requirements: Ensure adequate computational resources, especially for large-scale vector searches and real-time generation.
Database Optimization: Choosing the right vector database based on query load and latency requirements.
Integration Challenges: Compatibility with existing enterprise knowledge bases and document storage systems.
Security and Access Control: Implement authentication and authorization mechanisms to protect sensitive data.
The Intelligent Document Retrieval System effectively enhances document search and retrieval by combining multiple data sources, advanced embedding techniques, and efficient vector databases. Its modular design and support for various interfaces make it a versatile tool adaptable to different organizational needs. Future developments may focus on expanding supported data sources, optimizing embedding models for specific domains, and enhancing user interface features to further improve usability and performance.
In the future, this system will evolve into a multimodal retrieval system that can handle not only text-based documents but also images, audio, tables, figures, and other types of media. This will allow users to query across a diverse set of document types, improving the richness and depth of answers provided by the system.
Key features to be added include:
Image Retrieval: Integration of models like CLIP that can generate embeddings for images and link them with text. This will allow image-based searches alongside traditional text-based searches. Additionally, OCR (Optical Character Recognition) will be incorporated to extract text from images.
Audio Retrieval: Implementation of speech-to-text models (e.g., Google Speech-to-Text or DeepSpeech) to transcribe audio files into text, which can then be used in the same way as textual data for querying.
Table and Figure Extraction: Enhancements to document loaders to support extracting and processing data from tables and figures. This will allow the system to retrieve structured data (e.g., tables from PDFs) and images (e.g., charts and graphs) based on textual queries.
Multimodal Embeddings: Utilization of models like CLIP or similar to create unified embeddings for text, images, and audio. This will enable searching across all modalities using a single query, such as combining image and text-based information to retrieve the most relevant documents and media.
These additions will significantly expand the system's capabilities, enabling more dynamic and comprehensive query handling.
To make interactions with the system more personalized and context-aware, the memory capabilities will be enhanced to provide a richer user experience. Current plans for memory enhancements include:
Contextual Memory: Implementing a memory buffer that stores past interactions, allowing the system to maintain the context of the conversation across multiple queries. This will help to provide more consistent and relevant answers based on previous conversations and queries.
Long-Term Memory: Integrating a long-term memory system that can store important information across sessions, enabling the system to "remember" critical data and adapt responses based on past interactions. This could be stored in a database or vector store for efficient retrieval.
User-Specific Memory: Allowing users to opt into a personalized memory system where the model retains preferences, interests, or frequently asked questions. This will enhance the relevance and personalization of responses in future sessions.
These memory enhancements will make the system more intelligent, capable of adapting over time to better suit the needs of individual users.
By combining multimodal capabilities with advanced memory features, the system will become more dynamic, intelligent, and user-friendly, offering richer interactions and more powerful document retrieval from a wide variety of data sources.
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