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Efficiently Extracting Information from Hybrid Long Documents with LLMs


Core Concepts
The author introduces an Automated Information Extraction (AIE) framework to efficiently extract information from Hybrid Long Documents (HLDs) using Large Language Models (LLMs).
Abstract
The content discusses the challenges of processing Hybrid Long Documents (HLDs) containing both textual and tabular data. It introduces the AIE framework with four modules: Segmentation, Retrieval, Summarization, and Extraction. The experiments conducted on the Financial Reports Numerical Extraction (FINE) dataset demonstrate the effectiveness of AIE in handling HLDs. Large Language Models (LLMs) have shown proficiency in various natural language tasks but face limitations in comprehending hybrid text like HLDs. The study explores the adaptability of LLMs for extracting information from HLDs through the AIE framework. Various strategies such as table serialization formats, retrieval quantities, summarization techniques, numerical precision enhancement, keyword completion, and shot numbers are analyzed for their impact on information extraction accuracy. The results indicate that AIE significantly improves LLMs' ability to handle HLDs across different domains like financial reports, scientific papers, and Wikipedia articles. Limitations include model ability constraints and cost considerations. Further research is needed to evaluate LLM capabilities in other aspects beyond information extraction.
Stats
In FINE, ground truth values are presented in millions. Largest document contains 234,900 tokens. Smallest document comprises 13,022 tokens. Average token count per document is 59,464. Example: "(COMPANY, three months ended 2022.12.31, Revenue, 12345.00)"
Quotes

Deeper Inquiries

How can the AIE framework be adapted for multi-modal content extraction?

In order to adapt the AIE framework for multi-modal content extraction, several modifications and enhancements can be implemented: Integration of Multi-Modal Models: Incorporate models that are specifically designed to handle different types of data such as images, diagrams, or complex visualizations alongside textual and tabular data. This integration will enable the framework to process and extract information from diverse sources effectively. Enhanced Segmentation Techniques: Develop segmentation methods that can identify and separate different modalities within a document. This could involve pre-processing steps to isolate image regions, text sections, and tables before feeding them into respective modules in the AIE framework. Multi-Modal Retrieval Strategies: Implement retrieval strategies that consider multiple modalities when selecting relevant segments related to a given keyword. Utilizing embeddings specific to each modality can help improve the accuracy of segment retrieval. Adaptive Summarization Approaches: Modify summarization techniques to generate cohesive summaries that encompass information from all modalities present in a document. This may involve fusion mechanisms or hierarchical summarization structures tailored for multi-modal inputs. Cross-Modal Knowledge Integration: Develop mechanisms for cross-modal knowledge integration where information extracted from one modality informs the processing of another modality within the AIE framework. This interconnected approach can enhance overall understanding and extraction capabilities across different data types. By incorporating these adaptations, the AIE framework can effectively handle multi-modal content extraction tasks with improved accuracy and efficiency.

What are the implications of cost constraints when using large language models for information extraction?

Cost constraints play a significant role when utilizing large language models (LLMs) like GPT-3 or GPT-4 for information extraction tasks: Computational Expenses: Training and deploying LLMs require substantial computational resources which translate into high operational costs, especially when dealing with extensive datasets or real-time processing requirements. Infrastructure Costs: Setting up infrastructure capable of supporting LLMs efficiently adds additional expenses in terms of hardware procurement, maintenance, cooling systems, electricity consumption, etc. Model Fine-Tuning Expenses: Fine-tuning LLMs on domain-specific data incurs costs related to annotation efforts by subject matter experts as well as iterative training cycles which demand computational power. 4..Data Annotation Costs: Annotating training datasets with ground truth labels is essential but costly due to manual labor involved in labeling vast amounts of data accurately. 5..Operational Overheads: Continuous monitoring, model updates/upgrades along with ongoing support services contribute towards operational overheads adding up over time. To mitigate these cost implications: Optimize model architecture Use transfer learning techniques Employ efficient hardware setups Consider cloud-based solutions

How can prompt engineering enhance LLM performance in handling ambiguous expressions in documents?

Prompt engineering plays a crucial role in enhancing Large Language Models' (LLMs) ability to handle ambiguous expressions effectively: 1..Precision Control Prompts: By providing precision control instructions within prompts during value extractions from ambiguous expressions helps guide LLMs towards producing more accurate results based on required numerical precision levels specified directly through prompts 2..Contextual Cues Prompting: Crafting prompts that provide contextual cues around ambiguous terms enables better disambiguation by offering additional context clues aiding LLM's comprehension 3..Example-Based Prompts: Including examples illustrating how similar ambiguities were resolved previously guides LLMs towards making informed decisions based on past instances leading them towards more accurate interpretations 4..Domain-Specific Prompting: Tailoring prompts specific to certain domains assists LLMs comprehend industry jargon or specialized terminology prevalent within documents containing ambiguity 5...Feedback Loop Mechanisms: Implementing feedback loops where initial outputs are refined iteratively based on user input allows continuous improvement addressing ambiguities progressively By implementing these prompt engineering strategies intelligently within an Information Extraction system leveraging Large Language Models enhances their capability significantly while handling ambiguous expressions proficiently
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