Search Results for author: Charles Welch

Found 21 papers, 8 papers with code

Knowledge Enhanced Reflection Generation for Counseling Dialogues

no code implementations ACL 2022 Siqi Shen, Veronica Perez-Rosas, Charles Welch, Soujanya Poria, Rada Mihalcea

We propose a pipeline that collects domain knowledge through web mining, and show that retrieval from both domain-specific and commonsense knowledge bases improves the quality of generated responses.

Retrieval

Counseling-Style Reflection Generation Using Generative Pretrained Transformers with Augmented Context

no code implementations SIGDIAL (ACL) 2020 Siqi Shen, Charles Welch, Rada Mihalcea, Verónica Pérez-Rosas

We introduce a counseling dialogue system that seeks to assist counselors while they are learning and refining their counseling skills.

CAISA at WASSA 2022: Adapter-Tuning for Empathy Prediction

1 code implementation WASSA (ACL) 2022 Allison Lahnala, Charles Welch, Lucie Flek

We build a system that leverages adapters, a light weight and efficient method for leveraging large language models to perform the task Em- pathy and Distress prediction tasks for WASSA 2022.

Corpus Considerations for Annotator Modeling and Scaling

1 code implementation2 Apr 2024 Olufunke O. Sarumi, Béla Neuendorf, Joan Plepi, Lucie Flek, Jörg Schlötterer, Charles Welch

We introduce a composite embedding approach and show distinct differences in which model performs best as a function of the agreement with a given dataset.

Style Locality for Controllable Generation with kNN Language Models

no code implementations1 Nov 2023 Gilles Nawezi, Lucie Flek, Charles Welch

Nearest neighbor models have been explored for controllable generation but have not examined the use of locality levels.

Challenges of GPT-3-based Conversational Agents for Healthcare

no code implementations28 Aug 2023 Fabian Lechner, Allison Lahnala, Charles Welch, Lucie Flek

The potential to provide patients with faster information access while allowing medical specialists to concentrate on critical tasks makes medical domain dialog agents appealing.

Question Answering

A Critical Reflection and Forward Perspective on Empathy and Natural Language Processing

no code implementations29 Oct 2022 Allison Lahnala, Charles Welch, David Jurgens, Lucie Flek

We review the state of research on empathy in natural language processing and identify the following issues: (1) empathy definitions are absent or abstract, which (2) leads to low construct validity and reproducibility.

Nearest Neighbor Language Models for Stylistic Controllable Generation

no code implementations27 Oct 2022 Severino Trotta, Lucie Flek, Charles Welch

Recent language modeling performance has been greatly improved by the use of external memory.

Language Modelling

Unifying Data Perspectivism and Personalization: An Application to Social Norms

1 code implementation26 Oct 2022 Joan Plepi, Béla Neuendorf, Lucie Flek, Charles Welch

Instead of using a single ground truth for language processing tasks, several recent studies have examined how to represent and predict the labels of the set of annotators.

Understanding Interpersonal Conflict Types and their Impact on Perception Classification

1 code implementation18 Aug 2022 Charles Welch, Joan Plepi, Béla Neuendorf, Lucie Flek

Studies on interpersonal conflict have a long history and contain many suggestions for conflict typology.

Classification

Mitigating Toxic Degeneration with Empathetic Data: Exploring the Relationship Between Toxicity and Empathy

no code implementations NAACL 2022 Allison Lahnala, Charles Welch, Béla Neuendorf, Lucie Flek

Large pre-trained neural language models have supported the effectiveness of many NLP tasks, yet are still prone to generating toxic language hindering the safety of their use.

Text Generation

Modeling Proficiency with Implicit User Representations

no code implementations15 Oct 2021 Kim Breitwieser, Allison Lahnala, Charles Welch, Lucie Flek, Martin Potthast

We introduce the problem of proficiency modeling: Given a user's posts on a social media platform, the task is to identify the subset of posts or topics for which the user has some level of proficiency.

Exploring the Value of Personalized Word Embeddings

no code implementations COLING 2020 Charles Welch, Jonathan K. Kummerfeld, Verónica Pérez-Rosas, Rada Mihalcea

Our results show that a subset of words belonging to specific psycholinguistic categories tend to vary more in their representations across users and that combining generic and personalized word embeddings yields the best performance, with a 4. 7% relative reduction in perplexity.

Authorship Attribution Language Modelling +1

Compositional Demographic Word Embeddings

1 code implementation EMNLP 2020 Charles Welch, Jonathan K. Kummerfeld, Verónica Pérez-Rosas, Rada Mihalcea

Word embeddings are usually derived from corpora containing text from many individuals, thus leading to general purpose representations rather than individually personalized representations.

Language Modelling Word Embeddings

Improving Low Compute Language Modeling with In-Domain Embedding Initialisation

1 code implementation EMNLP 2020 Charles Welch, Rada Mihalcea, Jonathan K. Kummerfeld

In the process, we show that the standard convention of tying input and output embeddings does not improve perplexity when initializing with embeddings trained on in-domain data.

Language Modelling

Expressive Interviewing: A Conversational System for Coping with COVID-19

no code implementations EMNLP (NLP-COVID19) 2020 Charles Welch, Allison Lahnala, Verónica Pérez-Rosas, Siqi Shen, Sarah Seraj, Larry An, Kenneth Resnicow, James Pennebaker, Rada Mihalcea

The ongoing COVID-19 pandemic has raised concerns for many regarding personal and public health implications, financial security and economic stability.

Look Who's Talking: Inferring Speaker Attributes from Personal Longitudinal Dialog

1 code implementation25 Apr 2019 Charles Welch, Verónica Pérez-Rosas, Jonathan K. Kummerfeld, Rada Mihalcea

We examine a large dialog corpus obtained from the conversation history of a single individual with 104 conversation partners.

Attribute

Targeted Sentiment to Understand Student Comments

no code implementations COLING 2016 Charles Welch, Rada Mihalcea

We address the task of targeted sentiment as a means of understanding the sentiment that students hold toward courses and instructors, as expressed by students in their comments.

Decision Making Entity Extraction using GAN +1

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