PDFTriage: Question Answering over Long, Structured Documents
paper page: https://t.co/UvaJIXXCyH
Large Language Models (LLMs) have issues with document question answering (QA) in situations where the document is unable to fit in the small context length of an LLM. To overcome this issue, most existing works focus on retrieving the relevant context from the document, representing them as plain text. However, documents such as PDFs, web pages, and presentations are naturally structured with different pages, tables, sections, and so on. Representing such structured documents as plain text is incongruous with the user's mental model of these documents with rich structure. When a system has to query the document for context, this incongruity is brought to the fore, and seemingly trivial questions can trip up the QA system. To bridge this fundamental gap in handling structured documents, we propose an approach called PDFTriage that enables models to retrieve the context based on either structure or content. Our experiments demonstrate the effectiveness of the proposed PDFTriage-augmented models across several classes of questions where existing retrieval-augmented LLMs fail. To facilitate further research on this fundamental problem, we release our benchmark dataset consisting of 900+ human-generated questions over 80 structured documents from 10 different categories of question types for document QA.
[CL] Bias and Fairness in Large Language Models: A Survey
I O. Gallegos, R A. Rossi, J Barrow, M M Tanjim… [Stanford University & Adobe Research] (2023)
https://t.co/UVkmY3U1TB
- Provides definitions and a taxonomy of social biases and harms relevant to NLP, including representational and allocational harms.
- Proposes a taxonomy of metrics to evaluate bias using embeddings, probabilities, or generated text. Discusses limitations of embedding metrics.
- Categorizes datasets by counterfactual inputs or prompts. Highlights reliability and validity issues in existing datasets. Releases public datasets.
- Classifies techniques to mitigate bias via pre-processing, in-training, intra-processing, or post-processing interventions.
- Identifies challenges including addressing power imbalances, conceptualizing fairness, improving evaluation principles, expanding mitigation efforts, and exploring theoretical limits.
- Calls for centering marginalized communities, participatory research, reconstructing assumptions, expanding resources, developing fairness desiderata, rethinking social groups, examining reliability and validity, considering benefits and harms of benchmarks, expanding evaluation, enabling scalability of mitigations, developing hybrid techniques, understanding bias encoding in models, and establishing guarantees.
Call for participation
IPDPS GrAPL 2021: IPDPS Workshop on Graphs, Architectures, Programming, and Learning - May 17th, 2021
#graphs#GNN#graphdatabase#MachineLearning
https://t.co/nt0LBSjPWL
Just came across the amazing @networkrepo https://t.co/1ccNMEl0xw: A huge network data repository with interactive visualization and mining. Thank you for the effort @n_kahmed and Ryan Rossi!
Submit your work to the IPDPS Workshop on Graphs, Architectures, Programming, and Learning #IPDPS#graphs#hpc#bigdata -- Paper Deadline Extended: February 15th, 2021 -- https://t.co/nt0LBSjPWL
From Community to Role-based Graph Embeddings
“differences between roles and communities, and formalize the general mechanisms (e.g., random walks, feature diffusion) that give rise to community or role-based embeddings”
https://t.co/U1j0Mg3UYn