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Recently researchers working in the LFG framework have proposed algorithms for taking advantage of the implicit context-free components of a unification grammar [Maxwell 96]. This paper clarifies the mathematical foundations of these…

cmp-lg · Computer Science 2008-02-03 Marc Dymetman

In the continuously advancing AI landscape, crafting context-rich and meaningful responses via Large Language Models (LLMs) is essential. Researchers are becoming more aware of the challenges that LLMs with fewer parameters encounter when…

Computation and Language · Computer Science 2024-10-17 Somnath Banerjee , Amruit Sahoo , Sayan Layek , Avik Dutta , Rima Hazra , Animesh Mukherjee

We focus on a conversational question answering task which combines the challenges of understanding questions in context and reasoning over evidence gathered from heterogeneous sources like text, knowledge graphs, tables, and infoboxes. Our…

Computation and Language · Computer Science 2024-07-16 Parag Jain , Mirella Lapata

Isomorphisms allow human cognition to transcribe a potentially unsolvable problem from one domain to a different domain where the problem might be more easily addressed. Current approaches only focus on transcribing structural information…

Computation and Language · Computer Science 2021-05-14 Andrew Broekman , Linda Marshall

This paper proposes to improve visual question answering (VQA) with structured representations of both scene contents and questions. A key challenge in VQA is to require joint reasoning over the visual and text domains. The predominant…

Computer Vision and Pattern Recognition · Computer Science 2017-03-31 Damien Teney , Lingqiao Liu , Anton van den Hengel

We propose a novel framework that leverages LLMs for full causal graph discovery. While previous LLM-based methods have used a pairwise query approach, this requires a quadratic number of queries which quickly becomes impractical for larger…

Machine Learning · Computer Science 2026-04-06 Thomas Jiralerspong , Xiaoyin Chen , Yash More , Vedant Shah , Yoshua Bengio

In the talk at the workshop my aim was to demonstrate the usefulness of graph techniques for tackling problems that have been studied predominantly as problems on the term level: increasing sharing in functional programs, and addressing…

Logic in Computer Science · Computer Science 2019-02-07 Clemens Grabmayer

We study the problem of grammar-constrained context-free language reachability in graphs, focusing on complexity and empirical performance. We present an algorithmic framework for evaluating reachability queries constrained by context-free…

Data Structures and Algorithms · Computer Science 2026-03-02 Faruk Alpay , Levent Sarioglu

The integration of knowledge graphs (KGs) with large language models (LLMs) offers significant potential to improve the retrieval phase of retrieval-augmented generation (RAG) systems. In this study, we propose KG-CQR, a novel framework for…

Computation and Language · Computer Science 2025-09-09 Chi Minh Bui , Ngoc Mai Thieu , Van Vinh Nguyen , Jason J. Jung , Khac-Hoai Nam Bui

In modern mathematics, graphs figure as one of the better-investigated class of mathematical objects. Various properties of graphs, as well as graph-processing algorithms, can be useful if graphs of a certain kind are used as denotations…

Logic in Computer Science · Computer Science 2007-05-23 Alex Shkotin

In order to facilitate the accesses of general users to knowledge graphs, an increasing effort is being exerted to construct graph-structured queries of given natural language questions. At the core of the construction is to deduce the…

Artificial Intelligence · Computer Science 2024-04-01 Ruijie Wang , Meng Wang , Jun Liu , Michael Cochez , Stefan Decker

Most of the machine learning algorithms are limited to learn from flat data: a recordset with prefixed structure. When learning from a record, these types of algorithms don't take into account other objects even though they are directly…

Databases · Computer Science 2017-08-15 Pedro Almagro-Blanco , Fernando Sancho-Caparrini

The Kronecker product-based algorithm for context-free path querying (CFPQ) was proposed by Orachev et al. (2020). We reduce this algorithm to operations over Boolean matrices and extend it with the mechanism to extract all paths of…

Databases · Computer Science 2021-03-30 Ekaterina Shemetova , Rustam Azimov , Egor Orachev , Ilya Epelbaum , Semyon Grigorev

Graph plays a significant role in representing and analyzing complex relationships in real-world applications such as citation networks, social networks, and biological data. Recently, Large Language Models (LLMs), which have achieved…

Machine Learning · Computer Science 2024-04-25 Yuhan Li , Zhixun Li , Peisong Wang , Jia Li , Xiangguo Sun , Hong Cheng , Jeffrey Xu Yu

The most approaches to Knowledge Base Question Answering are based on semantic parsing. In this paper, we address the problem of learning vector representations for complex semantic parses that consist of multiple entities and relations.…

Computation and Language · Computer Science 2018-08-14 Daniil Sorokin , Iryna Gurevych

Machine learning on graphs is an important and ubiquitous task with applications ranging from drug design to friendship recommendation in social networks. The primary challenge in this domain is finding a way to represent, or encode, graph…

Social and Information Networks · Computer Science 2018-04-11 William L. Hamilton , Rex Ying , Jure Leskovec

Causal structure discovery from observations can be improved by integrating background knowledge provided by an expert to reduce the hypothesis space. Recently, Large Language Models (LLMs) have begun to be considered as sources of prior…

Machine Learning · Computer Science 2024-05-24 Victor-Alexandru Darvariu , Stephen Hailes , Mirco Musolesi

We present a novel parsing algorithm for all context-free languages, based on computing the relation between configurations and reaching transitions in a recursive transition network. Parsing complexity w.r.t. input length matches the state…

Formal Languages and Automata Theory · Computer Science 2019-02-19 Grzegorz Herman

The use of knowledge graphs for grounding agents in real-world Q&A applications has become increasingly common. Answering complex queries often requires multi-hop reasoning and the ability to navigate vast relational structures. Standard…

Artificial Intelligence · Computer Science 2026-04-03 Taraneh Ghandi , Hamidreza Mahyar , Shachar Klaiman

In this paper, we propose a novel method for question answering over knowledge graphs based on graph-to-segment mapping, designed to improve the understanding of natural language questions. Our approach is grounded in semantic parsing, a…

Computation and Language · Computer Science 2025-09-03 Sijia Wei , Wenwen Zhang , Qisong Li , Jiang Zhao