Large Language Model
AFRIDOC-MT: Document-level MT Corpus for African Languages
Alabi, Jesujoba O., Azime, Israel Abebe, Zhang, Miaoran, España-Bonet, Cristina, Bawden, Rachel, Zhu, Dawei, Adelani, David Ifeoluwa, Odoje, Clement Oyeleke, Akinade, Idris, Maab, Iffat, David, Davis, Muhammad, Shamsuddeen Hassan, Putini, Neo, Ademuyiwa, David O., Caines, Andrew, Klakow, Dietrich
This paper introduces AFRIDOC-MT, a document-level multi-parallel translation dataset covering English and five African languages: Amharic, Hausa, Swahili, Yor\`ub\'a, and Zulu. The dataset comprises 334 health and 271 information technology news documents, all human-translated from English to these languages. We conduct document-level translation benchmark experiments by evaluating neural machine translation (NMT) models and large language models (LLMs) for translations between English and these languages, at both the sentence and pseudo-document levels. These outputs are realigned to form complete documents for evaluation. Our results indicate that NLLB-200 achieved the best average performance among the standard NMT models, while GPT-4o outperformed general-purpose LLMs. Fine-tuning selected models led to substantial performance gains, but models trained on sentences struggled to generalize effectively to longer documents. Furthermore, our analysis reveals that some LLMs exhibit issues such as under-generation, repetition of words or phrases, and off-target translations, especially for African languages.
Towards a Probabilistic Framework for Analyzing and Improving LLM-Enabled Software
Baldonado, Juan Manuel, Bonomo-Braberman, Flavia, Braberman, Víctor Adrián
Ensuring the reliability and verifiability of large language model (LLM)-enabled systems remains a significant challenge in software engineering. We propose a probabilistic framework for systematically analyzing and improving these systems by modeling and refining distributions over clusters of semantically equivalent outputs. This framework facilitates the evaluation and iterative improvement of Transference Models -- key software components that utilize LLMs to transform inputs into outputs for downstream tasks. To illustrate its utility, we apply the framework to the autoformalization problem, where natural language documentation is transformed into formal program specifications. Our case illustrates how probabilistic analysis enables the identification of weaknesses and guides focused alignment improvements, resulting in more reliable and interpretable outputs. This principled approach offers a foundation for addressing critical challenges in the development of robust LLM-enabled systems.
Gender-Neutral Large Language Models for Medical Applications: Reducing Bias in PubMed Abstracts
Schaefer, Elizabeth, Roberts, Kirk
This paper presents a pipeline for mitigating gender bias in large language models (LLMs) used in medical literature by neutralizing gendered occupational pronouns. A dataset of 379,000 PubMed abstracts from 1965-1980 was processed to identify and modify pronouns tied to professions. We developed a BERT-based model, "Modern Occupational Bias Elimination with Refined Training," or "MOBERT," trained on these neutralized abstracts, and compared its performance with "1965Bert," trained on the original dataset. MOBERT achieved a 70% inclusive replacement rate, while 1965Bert reached only 4%. A further analysis of MOBERT revealed that pronoun replacement accuracy correlated with the frequency of occupational terms in the training data. We propose expanding the dataset and refining the pipeline to improve performance and ensure more equitable language modeling in medical applications. Introduction Background Large language models (LLMs) are now widely used for a range of applications, from creating customer service chatbots to advertising that targets specific clients to predicting financial outcomes from potential economic indicators. LLMs have also increased in presence in the medical sector, ranging from accessible diagnostics to comprehensive literature retrieval, where they hold the promise of leading to a more informed level of care. Given the critical nature of these uses, it is essential to ensure that such LLMs remain free from biases that could potentially impact patient treatment and outcomes.
Large Language Models Share Representations of Latent Grammatical Concepts Across Typologically Diverse Languages
Brinkmann, Jannik, Wendler, Chris, Bartelt, Christian, Mueller, Aaron
Human bilinguals often use similar brain regions to process multiple languages, depending on when they learned their second language and their proficiency. In large language models (LLMs), how are multiple languages learned and encoded? In this work, we explore the extent to which LLMs share representations of morphosyntactic concepts such as grammatical number, gender, and tense across languages. We train sparse autoencoders on Llama-3-8B and Aya-23-8B, and demonstrate that abstract grammatical concepts are often encoded in feature directions shared across many languages. We use causal interventions to verify the multilingual nature of these representations; specifically, we show that ablating only multilingual features decreases classifier performance to near-chance across languages. We then use these features to precisely modify model behavior in a machine translation task; this demonstrates both the generality and selectivity of these feature's roles in the network. Our findings suggest that even models trained predominantly on English data can develop robust, cross-lingual abstractions of morphosyntactic concepts.
On Creating A Brain-To-Text Decoder
Lamprou, Zenon, Moshfeghi, Yashar
Brain decoding has emerged as a rapidly advancing and extensively utilized technique within neuroscience. This paper centers on the application of raw electroencephalogram (EEG) signals for decoding human brain activity, offering a more expedited and efficient methodology for enhancing our understanding of the human brain. The investigation specifically scrutinizes the efficacy of brain-computer interfaces (BCI) in deciphering neural signals associated with speech production, with particular emphasis on the impact of vocabulary size, electrode density, and training data on the framework's performance. The study reveals the competitive word error rates (WERs) achievable on the Librispeech benchmark through pre-training on unlabelled data for speech processing. Furthermore, the study evaluates the efficacy of voice recognition under configurations with limited labeled data, surpassing previous state-of-the-art techniques while utilizing significantly fewer labels. Additionally, the research provides a comprehensive analysis of error patterns in voice recognition and the influence of model size and unlabelled training data. It underscores the significance of factors such as vocabulary size and electrode density in enhancing BCI performance, advocating for an increase in microelectrodes and refinement of language models.
Multi-Agent Collaboration Mechanisms: A Survey of LLMs
Tran, Khanh-Tung, Dao, Dung, Nguyen, Minh-Duong, Pham, Quoc-Viet, O'Sullivan, Barry, Nguyen, Hoang D.
With recent advances in Large Language Models (LLMs), Agentic AI has become phenomenal in real-world applications, moving toward multiple LLM-based agents to perceive, learn, reason, and act collaboratively. These LLM-based Multi-Agent Systems (MASs) enable groups of intelligent agents to coordinate and solve complex tasks collectively at scale, transitioning from isolated models to collaboration-centric approaches. This work provides an extensive survey of the collaborative aspect of MASs and introduces an extensible framework to guide future research. Our framework characterizes collaboration mechanisms based on key dimensions: actors (agents involved), types (e.g., cooperation, competition, or coopetition), structures (e.g., peer-to-peer, centralized, or distributed), strategies (e.g., role-based or model-based), and coordination protocols. Through a review of existing methodologies, our findings serve as a foundation for demystifying and advancing LLM-based MASs toward more intelligent and collaborative solutions for complex, real-world use cases. In addition, various applications of MASs across diverse domains, including 5G/6G networks, Industry 5.0, question answering, and social and cultural settings, are also investigated, demonstrating their wider adoption and broader impacts. Finally, we identify key lessons learned, open challenges, and potential research directions of MASs towards artificial collective intelligence.
Understanding How Paper Writers Use AI-Generated Captions in Figure Caption Writing
Yin, Ho, Ng, null, Hsu, Ting-Yao, Min, Jiyoo, Kim, Sungchul, Rossi, Ryan A., Yu, Tong, Jung, Hyunggu, Huang, Ting-Hao 'Kenneth'
Figures and their captions play a key role in scientific publications. However, despite their importance, many captions in published papers are poorly crafted, largely due to a lack of attention by paper authors. While prior AI research has explored caption generation, it has mainly focused on reader-centered use cases, where users evaluate generated captions rather than actively integrating them into their writing. This paper addresses this gap by investigating how paper authors incorporate AI-generated captions into their writing process through a user study involving 18 participants. Each participant rewrote captions for two figures from their own recently published work, using captions generated by state-of-the-art AI models as a resource. By analyzing video recordings of the writing process through interaction analysis, we observed that participants often began by copying and refining AI-generated captions. Paper writers favored longer, detail-rich captions that integrated textual and visual elements but found current AI models less effective for complex figures.
BioAgents: Democratizing Bioinformatics Analysis with Multi-Agent Systems
Mehandru, Nikita, Hall, Amanda K., Melnichenko, Olesya, Dubinina, Yulia, Tsirulnikov, Daniel, Bamman, David, Alaa, Ahmed, Saponas, Scott, Malladi, Venkat S.
Creating end-to-end bioinformatics workflows requires diverse domain expertise, which poses challenges for both junior and senior researchers as it demands a deep understanding of both genomics concepts and computational techniques. While large language models (LLMs) provide some assistance, they often fall short in providing the nuanced guidance needed to execute complex bioinformatics tasks, and require expensive computing resources to achieve high performance. We thus propose a multi-agent system built on small language models, fine-tuned on bioinformatics data, and enhanced with retrieval augmented generation (RAG). Our system, BioAgents, enables local operation and personalization using proprietary data. We observe performance comparable to human experts on conceptual genomics tasks, and suggest next steps to enhance code generation capabilities. Large language models (LLMs) have been applied to various domain-specific contexts, including scientific discovery in medicine [45, 49, 56], chemistry [6, 7], and biotechnology [31]. Recent advances in LLMs have spurred their use in bioinformatics [13], a field encompassing data-intensive tasks such as genome sequencing, protein structure prediction, and pathway analysis. One of the most significant applications has been AlphaFold3, which uses transformer architecture with triangular attention to predict a protein's three-dimensional (3-D) structure from amino acid sequences [2].
Bactrainus: Optimizing Large Language Models for Multi-hop Complex Question Answering Tasks
Barati, Iman, Ghafouri, Arash, Minaei-Bidgoli, Behrouz
In recent years, the use of large language models (LLMs) has significantly increased, and these models have demonstrated remarkable performance in a variety of general language tasks. However, the evaluation of their performance in domain-specific tasks, particularly those requiring deep natural language understanding, has received less attention. In this research, we evaluate the ability of large language models in performing domain-specific tasks, focusing on the multi-hop question answering (MHQA) problem using the HotpotQA dataset. This task, due to its requirement for reasoning and combining information from multiple textual sources, serves as a challenging benchmark for assessing the language comprehension capabilities of these models. To tackle this problem, we have designed a two-stage selector-reader architecture, where each stage utilizes an independent LLM. In addition, methods such as Chain of Thought (CoT) and question decomposition have been employed to investigate their impact on improving the model's performance. The results of the study show that the integration of large language models with these techniques can lead to up to a 4% improvement in F1 score for finding answers, providing evidence of the models' ability to handle domain-specific tasks and their understanding of complex language. Keywords Large Language Models, Multi-hop Question Answering, Task Decomposition, Knowledge Distillation, HotpotQA Introduction In recent years, LLMs have become one of the most significant achievements in natural language processing, demonstrating exceptional performance in a wide range of general language tasks, such as translation, summarization, and text generation. However, existing evaluations are often based on general benchmarks and employ zero-shot or few-shot approaches. While these methods showcase the overall capabilities of the models, they do not provide a thorough and in-depth analysis of their performance on specific tasks. In other words, these evaluations do not compare the models' capabilities to traditional methods or models optimized for a particular task. Therefore, investigating how to improve the performance of language models on domain-specific tasks and identifying their limitations remains an important and underexplored research gap.
Dafny as Verification-Aware Intermediate Language for Code Generation
Li, Yue Chen, Zetzsche, Stefan, Somayyajula, Siva
We will revisit this example later on. Using large language models (LLMs) to generate source code In this paper, we propose to utilise Dafny as an intermediate from natural language prompts is a popular and promising technology within a code-generating chatbot prototype idea with a wide range of applications. One of its limitations on the way to higher quality mainstream-language code. is that the generated code can be faulty at times, often in a Dafny is particularly well-suited for this purpose, because: subtle way, despite being presented to the user as correct. In this paper, we explore ways in which formal methods can assist with increasing the quality of code generated by an LLM. Instead of emitting code in a target language directly, we propose that the user guides the LLM to first generate 1. It allows for a clear distinction between the specification an opaque intermediate representation, in the verificationaware of a program--derived from a natural language language Dafny, that can be automatically validated prompt using an LLM--and its implementation, which for correctness against agreed on specifications. The correct can again be dialogically derived using an LLM with Dafny program is then compiled to the target language and verification feedback in the loop.