Parallel LLM Reasoning for Bias-Resilient, Robust Conceptual Abstraction
For practitioners using LLMs for long document analysis, this method reduces cumulative bias and improves reliability, though it is an incremental improvement over existing chunking and consolidation techniques.
The paper proposes a parallel chunk-level processing framework with evidence-anchored consolidation to reduce bias and improve robustness in LLM-based long document analysis. Results show 84% reduction in omission error, 130% increase in evidence traceability, and 91% reduction in unsupported claims.
Large language models (LLMs) have been increasingly used to analyze text. However, they are often plagued with contextual reasoning limitations when analyzing long documents. When long documents are processed sequentially, early or dominant concepts can overshadow less visible but meaningful interpretations, leading to cumulative analytical bias, omission error, and over-generalization. Additionally, independently generated outputs are often merged without systematic grounding, introducing redundancy, conceptual drift, and unsupported claims. This study proposes a structured framework combining parallel chunk-level processing with evidence-anchored consolidation. Texts are first divided into semantically coherent chunks and processed independently in parallel to remove influence from earlier processing. The independently generated interpretations are then consolidated using explicit evidence anchoring and prioritization that reduces dominance and over-generalization while improving traceability. Experiments with multiple model types and sizes indicate that parallel processing significantly reduces omission error by approximately 84%, increases evidence traceability by up to 130%, and reduces unsupported claims by up to 91%. Smaller models benefited most, suggesting that efficient parallel chunking and consolidation play a critical role in achieving reliable and scalable textual analysis.