Papers by Dirk Hovy
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| Challenge: | Existing studies show that incorporating demographic factors in language representations improves performance on downstream NLP tasks. |
| Approach: | They use continuous language modeling and dynamic multi-task learning to adapt pre-trained Transformers to incorporate demographic information into their representations. |
| Outcome: | The proposed model shows that the results are consistent with previous studies. |
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| Challenge: | Existing approaches to evaluating AI tools in this domain remain fragmented and inconsistent. |
| Approach: | They propose a taxonomy of AI mental health support types that integrates clinical soundness, social context, and equity to provide a structured basis for evaluation. |
| Outcome: | The proposed framework integrates clinical soundness, social context, and equity, providing a structured basis for evaluation. |
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| Challenge: | Current NLP models focus on information content while ignoring language’s social factors. |
| Approach: | They propose that NLP systems focus on information content while ignoring language’s social factors to improve performance. |
| Outcome: | The proposed approach improves the performance of existing systems, open up new applications, and increase fairness and usability for all users. |
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| Challenge: | Prior work on persona prompting has shown mixed results on its effectiveness . prior work did not consider when and why personas should affect performance . |
| Approach: | They analyze literature on persona prompting and distill three desiderata for their effectiveness . they propose mitigation strategies to improve robustness but find they only work for the largest, most capable models . |
| Outcome: | The authors find that expert personas usually lead to positive or non-significant performance changes . they propose mitigation strategies to improve robustness but only for the largest models . |
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| Challenge: | Large language models are helping millions of users write texts about diverse issues . issue bias is where an LLM tends to present just one perspective on a given issue . |
| Approach: | They construct a set of 2.49m realistic English-language prompts to measure issue bias in LLM writing assistance using 3.9k templates and 212 political issues from real user interactions. |
| Outcome: | The proposed model aligns more with US Democrat than Republican voter opinion on a subset of issues. |
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| Challenge: | pedagogical theories are not aligned with teaching strategies for educational tasks . quiet students may be disengaged or not thinking critically because they do not speak up . |
| Approach: | They propose a taxonomy that links pedagogical methods to personality profiles to map teaching strategies to student personality traits. |
| Outcome: | The proposed model improves the use of less common, high-impact strategies such as role-playing . the model also increases the use less common strategies such role-players . |
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| Challenge: | Emotion analysis (EA) is a rapidly growing field in natural language processing . there is no consensus on scope, direction, or methods for EA . |
| Approach: | They review 154 relevant NLP papers on emotion analysis from the last decade . they ask: how are EA tasks defined in NLP? what are the most prominent emotion frameworks and which emotions are modeled? |
| Outcome: | The authors examine 154 relevant NLP papers on emotion analysis from the last decade . they find that there is no consensus on scope, direction, or methods . |
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| Challenge: | Multiple choice questions are one of the most popular evaluation formats for understanding the capabilities of autoregressive large language models (LLMs). |
| Approach: | They evaluated how aligned first-token evaluation is with the text output along several dimensions, namely final option choice, refusal rate, choice distribution and robustness under prompt perturbation. |
| Outcome: | The proposed evaluation methods are misaligned on all dimensions, reaching mismatch rates over 60%. |
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| Challenge: | a political party's manifestos are published before any election, but do they follow through? a new study uses neural models to distinguish between actual pledges and general statements . |
| Approach: | They use election manifestos of Swedish and Indian political parties to learn neural models that distinguish actual pledges from generic positions. |
| Outcome: | The proposed model can predict election year and manifesto's party, while context introduces noise. |
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| Challenge: | linguistic studies have shown the prevalence of various lexical and grammatical patterns in texts authored by a person of a particular gender, but models for part-of-speech tagging and dependency parsing have not adapted to account for these differences. |
| Approach: | They annotate the Wall Street Journal part of the Penn Treebank with the gender information of the articles’ authors and build taggers and parsers trained on this data. |
| Outcome: | The proposed model can account for gendered differences in syntactic tasks and highlight future venues for developing more accurate taggers and parsers. |
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| Challenge: | despite growing concerns surrounding fairness and bias in NLP, there is a dearth of studies delving into the effects it may have on NLP systems. |
| Approach: | They argue that NLP systems’ performance is affected by speakers’ SES, potentially disadvantaging less-privileged socioeconomic groups. |
| Outcome: | The proposed model shows that NLP systems perform better on tasks with social class, ethnicity and geographical variation than those without social class. |
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| Challenge: | Using coherence scores to choose topics, we test whether the results help us to understand user interests and concerns. |
| Approach: | They analyze user reviews from Best Buy US website for smart speakers to determine whether they provide useful information for product analysis. |
| Outcome: | The proposed models capture brand performance and differences and differentiate the market into two distinct groups with different properties. |
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| Challenge: | a study of 5,500 chat interactions shows that successful communicators are successful in other domains. |
| Approach: | They annotate chat interactions with four dimensions of interaction styles to predict success . they find successful communicators are also successful in other domains . |
| Outcome: | The results show that successful communicators are successful in other domains. |
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| Challenge: | 199 million people communicate on twitter daily, making it essential to study policy and decision-making. |
| Approach: | They propose a flow-based tool to augment Twitter data with additional information about tweets and users. |
| Outcome: | The proposed tool is designed to enhance Twitter data with additional information about tweets and users. |
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| Challenge: | Previous work has shown that LLMs display biases in emotion attribution along gender lines. |
| Approach: | They examine how different religions are represented in LLMs by examining emotion attribution and cultural biases. |
| Outcome: | The findings highlight the need to address and rectify these biases in LLMs. |
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| Challenge: | Prior work shows that disagreement between annotators can be useful in training models. |
| Approach: | They propose to use disagreements as an auxiliary task in a multi-task neural network to incorporate disagreements into models. |
| Outcome: | The proposed method significantly improves performance on NLP tasks beyond the standard approach and prior work. |
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| Challenge: | Existing methods for geolocation use sparse adjacency matrices of connections, which grow exponentially with the number of users. |
| Approach: | They propose two methods to learn continuous node representations from social media posts and textual user mentions. |
| Outcome: | The proposed methods improve performance over previous sparse graph representations. |
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| Challenge: | Developing better methods for a task is a common feature of the computational linguistics literature. |
| Approach: | They propose to use bootstrap to compute significance levels with the BOOtSTrap SAmpling procedure to evaluate models that predict hard labels and soft labels as well. |
| Outcome: | The proposed method can be used to evaluate models that predict hard labels and soft labels on benchmark data sets. |
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| Challenge: | Variation in human annotation (i.e., disagreements) is common in NLP, but it is unclear whether it is possible to model this variation in LLMs. |
| Approach: | They evaluate the influence of different reasoning settings on LLM disagreement modeling . RLVR-style reasoning degrades performance in disagreement modeling, they find . |
| Outcome: | The proposed reasoning settings improve LLM disagreement modeling, while RLVR-style reasoning degrades it. |
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| Challenge: | a recent study shows that machine translations make older and more male characters sound older and older than the original. |
| Approach: | They propose to use demographicallyrepresentative data to examine how text is translated . they show that authors sound older and more male than the original . |
| Outcome: | The results suggest that translation models reflect demographic bias in the training data. |
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| Challenge: | a tutorial aims to teach students how to ethically apply NLP . the tutorial will focus on examples for university classrooms, but ideas can extend to company-internal workshops or tutorials in a variety of organizations. |
| Approach: | a tutorial aims to empower NLP researchers and practitioners to teach others about ethical NLP . the tutorial will focus on examples for university classrooms, but ideas can extend to company-internal workshops . |
| Outcome: | a tutorial aims to teach students how to ethically apply NLP techniques . the tutorial will include examples for university classrooms, but ideas can extend to company-internal workshops . |
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| Challenge: | Existing methods to classify texts as truthful or deceptive are limited by the context of the text being analyzed. |
| Approach: | They propose to use a corpus of Italian dialogues to classify texts as truthful or deceptive. |
| Outcome: | The proposed models show that not all contexts are equally useful to the task. |
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| Challenge: | a lack of research on the interplay between fairness and environmental impact is a problem in natural language processing . fairness is prone to encode and amplify stereotypical social biases, according to several studies . |
| Approach: | They evaluate a technique to reduce energy consumption of English NLP models by knowledge distillation for its impact on fairness. |
| Outcome: | The proposed method reduces energy consumption and environmental impact of English NLP models. |
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| Challenge: | obfuscation is used for English but not other languages, and even then, unevenly. |
| Approach: | They propose a multilingual community resource called PrOf to standardize profanity obfuscation processes. |
| Outcome: | The proposed tool can help scientific publications to make hate speech work accessible and comparable, irrespective of language. |
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| Challenge: | Dialects are one of the main drivers of language variation, a major challenge for natural language processing tools. |
| Approach: | They use a corpus of 16.8M anonymous online posts to learn continuous document representations of cities. |
| Outcome: | The proposed method matches dialect areas at different granularities against an existing dialect map. |
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| Challenge: | Pre-trained language models have outperformed other models on a wide range of tasks . however, there is still little understanding of their knowledge of higher-level aspects of language . |
| Approach: | They investigate whether pre-trained language models have knowledge of sociodemographics . they use traditional probing techniques to probe the knowledge of single-GPU PLMs based on multiple English data sets . |
| Outcome: | The results show that pre-trained language models outperform other models on a wide range of tasks. |
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| Challenge: | Labelled data is the foundation of most natural language processing tasks, but there are valid beliefs about what the correct data labels should be. |
| Approach: | They propose two contrasting paradigms for data annotation that encourage annotator subjectivity . they propose a descriptive paradigm that allows for the surveying and modelling of different beliefs . |
| Outcome: | The proposed paradigms encourage annotator subjectivity, while the prescriptive paradigm discourages it. |
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| Challenge: | Existing explanations for speech classification models are difficult to interpret and make mistakes. |
| Approach: | They propose to explain speech classification models by using word-level and paralinguistic attributes to measure the impact of each audio segment aligned with a word on the outcome. |
| Outcome: | The proposed explanations correctly represent the model’s inner workings and are plausible to humans. |
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| Challenge: | predicting the location of a social media post requires discretization of the coordinates, but results in poor performance. |
| Approach: | They propose to combine two approaches to predict location using supervised models . they evaluate a multitask convolutional neural network that predicts both discrete locations and continuous coordinates . |
| Outcome: | The proposed model outperforms singletask models and prior work on one dataset and shows that correlation between labels and coordinates has a marked impact on the effectiveness of a regression task. |
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| Challenge: | Wrong pronoun translations can discriminate against marginalized groups, e.g., non-binary individuals. |
| Approach: | They compare 3rd-person pronoun translations to five other languages . they propose to address gender exclusivity in future research . |
| Outcome: | The proposed method compares translations of gendered vs. gender-neutral pronouns from english to five other languages and vice versa. |
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| Challenge: | a recent study shows that social media posts are often given as continuous coordinates . but, the resulting discrete coordinates do not always correspond to existing linguistic areas . |
| Approach: | They propose an algorithm for clustering coordinates and associating them with towns using point-to-city (P2C) they compare accuracy of a state-of-the-art geolocation model with P2C labels to one with regular k-d tree labels. |
| Outcome: | The proposed method improves accuracy at 100 miles, but degrades for finer-grained distinctions . iterative k-d tree-based method can cluster coordinates and associate them with towns . |
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| Challenge: | Current modeling of 3rd person pronouns ignores neopronoun phenomena like naive pronounes, which are not (yet) widely established. |
| Approach: | They propose to validate existing and novel approaches for modeling 3rd person pronouns in language technology and validate them through a survey. |
| Outcome: | The proposed model excludes non-binary users, while ignoring gender-specific phenomena. |
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| Challenge: | a new class of multitasks, multilingual neural networks, has recently pushed the boundaries of speech-related tasks. |
| Approach: | They evaluate performance of two widely used multilingual automatic speech recognition models . they find clear gender disparities, with the advantaged group varying across languages . |
| Outcome: | The proposed models are compared on 19 languages from eight language families and two speaking conditions. |
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| Challenge: | Existing work on socio-demographic factors has focused on how much a person's socioeconomic status affects their language production and perception. |
| Approach: | They propose to include socio-economic class in future natural language processing (NLP) research aimed at understanding relationships between socio-demographic factors and language production and perception. |
| Outcome: | The proposed definition of class can be operationalised by NLP researchers and argue for including socio-economic class in future language technologies. |
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| Challenge: | Social scientists often need to develop codebooks that can be reliable but require significant human effort. |
| Approach: | They propose a mixed-initiative annotation framework that integrates human expertise with automatic annotation guided by large language models. |
| Outcome: | The proposed framework integrates human expertise with automatic annotation guided by large language models. |
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| Challenge: | 4.3% of the time, language models complete a sentence with a hurtful word . authors propose a score to quantify the amount of hurtful sentence completions in a language model. |
| Approach: | They propose a score to measure hurtful sentence completions in language models . they use a template- and lexicon-based bias evaluation methodology for six languages . |
| Outcome: | The proposed score measures the amount of hurtful sentences in language models. |
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| Challenge: | Despite efforts to align large language models with ethical guidelines, models can still be induced into unsafe behavior with jailbreaking. |
| Approach: | They investigate the impact of many-shot jailbreaking on LLMs in italian . they find models exhibit unsafe behaviors even with minimal exposure to harmful prompts . |
| Outcome: | The proposed model exhibits unsafe behaviors even with minimal exposure to harmful prompts, and this tendency rapidly escalates with more demonstrations. |
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| Challenge: | Existing studies have shown that Large Language Models (LLMs) are not fully aligned with human moral judgments. |
| Approach: | They propose a dataset of 1,618 real-world moral dilemmas paired with a distribution of human moral judgments consisting of a binary evaluation and a free-text rationale to examine how closely LLMs align with human moral judgements. |
| Outcome: | The proposed model reproduces human judgments only under high consensus; alignment deteriorates sharply when human disagreement increases. |
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| Challenge: | Socioeconomic status (SES) fundamentally influences how people interact with technology, but it is limited by proxy metrics and synthetic data. |
| Approach: | They collect 6,482 prompts from previous interactions of 1,000 individuals from ‘diverse socioeconomic backgrounds’ about their use of language technologies and generative AI. |
| Outcome: | The findings show that higher SES groups have higher levels of abstraction, convey requests more concisely, and topics like ‘inclusivity’ and ‘travel’. |
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| Challenge: | Existing topic models are language-specific and cannot be transferred in a transferable manner. |
| Approach: | They propose a zero-shot cross-lingual topic model that learns topics on one language and predicts them for unseen documents in different languages. |
| Outcome: | The proposed model learns topics on one language and predicts them for unseen documents in different languages. |
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| Challenge: | Existing work has attempted to model individual annotation behaviour rather than predicting aggregated labels. |
| Approach: | They propose to model individual annotator behaviour rather than predicting aggregated labels by adding group-specific layers to multi-annotator models to account for sociodemographics. |
| Outcome: | The proposed model does not significantly improve on toxic content detection tasks. |
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| Challenge: | Existing methods for multilingual framing differ from those used in English-speaking world . framers often use loaded vocabularies to create political images or favor a particular point of view . |
| Approach: | They use eight years of Russian-backed disinformation campaigns to examine framing . they find that disinformation campaign consistently favors specific framers . |
| Outcome: | The proposed method underperforms and shows high disagreements in Russian-language articles . the proposed method is based on eight years of Russian-backed disinformation campaigns . |
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| Challenge: | Recent neural topic models extract words from documents, but they are not coherent . coherence is crucial for topic models, but many use bag-of-words document representations as input . pre-trained language models are becoming ubiquitous in natural language processing . |
| Approach: | They combine contextualized representations with neural topic models to produce more coherent topics . they say that future improvements in language models will translate into better topic models . |
| Outcome: | The proposed approach produces more meaningful and coherent topics than bag-of-words models and recent neural models. |
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| Challenge: | Pre-trained word embeddings provide significant improvements over untrained embeddables . Feature analysis reveals structural patterns of headline popularity . |
| Approach: | They use a multi-task GRU network to model headline popularity . they find that pre-trained word embeddings provide significant improvements over untrained embeddables . |
| Outcome: | The proposed model improves on pre-trained word embeddings and untrained embeddables . it also improves with the combination of two auxiliary tasks, news-section prediction and part-of-speech tagging . |
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| Challenge: | Large Language Models (LLMs) are a powerful tool for integrating human-like communication and context-aware interactions into artificial systems. |
| Approach: | They propose to introduce and overview different aspects of artificial social intelligence and their relationship with LLMs by introducing scientific methods for evaluating social intelligence in LLM. |
| Outcome: | This tutorial will introduce scientific methods for evaluating social intelligence in LLMs, highlighting the key challenges, and identifying promising research directions. |
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| Challenge: | Several studies discuss the potential harms and benefits of large language models (LLMs) large neural models can replicate and even amplify negative, stereotypical, and derogatory associations in the data. |
| Approach: | They propose to use a first aid kit to assess the safety of conversational AI in various settings . they propose several future directions and discuss ethical considerations . |
| Outcome: | The proposed tools can provide estimates of the relative safety of systems in various settings, but they still have several shortcomings. |
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| Challenge: | Personalized stories are often preferred because they reflect a child's interests, experiences, and developmental needs. |
| Approach: | They analyze a dataset to examine how biases influence protagonists’ attributes and story elements in LLM-generated stories. |
| Outcome: | The proposed dataset shows that gender stereotypes influence protagonist attributes and story elements in LLM-generated stories. |
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| Challenge: | a new method for text classification ignores strong non-linguistic similarities like homophily . authors are typically represented via their linguistic profiles, i.e. information avail-able in the text . |
| Approach: | They use homophily cues to retrofit text-based author representations with non-linguistic information and introduce a trade-off parameter. |
| Outcome: | The proposed method improves on two author-attribute prediction tasks with large labels. |
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| Challenge: | Detecting offensive content is becoming a critical task in natural language processing . but most datasets use a single binary label for hate or incivility, even though each concept is multi-faceted . a more fine-grained multi-label approach addresses conceptual and performance issues . |
| Approach: | They propose to use a dataset to annotate offensive online speech with six labels . they propose to apply a more fine-grained approach to predicting incivility and hateful content . |
| Outcome: | The proposed approach outperforms or matches benchmark datasets on the annotated tweets. |
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| Challenge: | a growing number of studies address the effect of bias on predictions, but no unifying framework exists . a general phenomenon of biased predictive models in NLP is not recent, authors say . |
| Approach: | They propose a unifying framework for identifying and reducing bias in natural language processing . they propose to differentiate two consequences of bias and four potential origins of bias . |
| Outcome: | The proposed framework provides an overview of predictive bias in natural language processing . it differentiates two consequences of bias and four potential origins of bias: label bias, selection bias, model overamplification, and semantic bias. |
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| Challenge: | E.g., neural hate speech detection models are strongly influenced by identity terms like gay, or women, resulting in false positives, severe unintended bias, and lower performance. |
| Approach: | They propose a knowledge-free Entropy-based Attention Regularization (EAR) approach to discourage overfitting to training-specific terms. |
| Outcome: | The proposed model matches or exceeds state-of-the-art performance for hate speech classification and bias metrics on three benchmark corpora in English and Italian. |
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| Challenge: | a recent paper argues that current publications foster a gap between adoption and understanding of models . it also makes it easier to meet publication demands with method papers, argues the paper . |
| Approach: | They argue that current NLP publication models foster a gap between adoption and understanding of models . they argue that everlarger models make it harder to explain how our methods work . |
| Outcome: | The authors argue that current publications foster a gap between adoption and understanding of models . they argue that the rise of everlarger models makes it harder to explain how our methods work . |
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| Challenge: | Social scientists increasingly use demographically stratified social media data to study attitudes, beliefs, and behavior of the general public. |
| Approach: | They validated the DADIT dataset of 30M tweets of 20k Italian Twitter users, along with their bios and profile pictures. |
| Outcome: | The best XLM-based classifier improves upon the commonly used competitor M3 by up to 53% F1. |
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| Challenge: | Hate speech datasets focus on English-language content, hindering effective models . annotating hateful content is expensive, time-consuming and potentially harmful to annotators. |
| Approach: | They propose to use ISO 639-1 codes to fine-tune models on one source language and apply them to another language. |
| Outcome: | The proposed approach performs well on some tasks, but fails on many others. |
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| Challenge: | Large language models reflect societal norms and biases, especially about gender. |
| Approach: | They propose to use large language models to examine gendered emotion attribution in five state-of-the-art LLMs to investigate whether emotions are genderes and whether they are influenced by societal stereotypes. |
| Outcome: | The proposed models exhibit gendered emotions, influenced by gender stereotypes, and the results are consistent with established research in psychology and gender studies. |
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| Challenge: | Large language models (LLMs) are now being used by millions of people across the world. |
| Approach: | They propose a test suite called XSTest to identify such eXaggerated Safety behaviours in a systematic way. |
| Outcome: | The proposed test suite identifies eXaggerated Safety behaviours in a systematic way. |
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| Challenge: | Recent work has shown that LLMs perform poorly when prompted with sociodemographic attributes, suggesting limited inherent sociodemography knowledge. |
| Approach: | They propose to train large language models to be accurate sociodemographic models of annotator variation by using a curated dataset of five tasks with standardized sociodemography. |
| Outcome: | The proposed models improve in sociodemographic prompting when trained but this performance gain is largely due to models learning annotator-specific behaviour rather than sociodemography. |