CAISA Lab

Publications

Recent publications

Showing all publications

2023

OpinionConv: Conversational Product Search with Grounded Opinions

Vahid Sadiri Javadi, Martin Potthast, Lucie Flek

Proceedings of the 24th Meeting of the Special Interest Group on Discourse and Dialogue  ·  01 Jan 2023

2022

A critical reflection and forward perspective on empathy and natural language processing

Allison Lahnala, Charles Welch, David Jurgens, Lucie Flek

Findings of the association for computational linguistics: EMNLP 2022  ·  01 Dec 2022

Unifying data perspectivism and personalization: An application to social norms

Joan Plepi, Béla Neuendorf, Lucie Flek, Charles Welch

Proceedings of the 2022 conference on empirical methods in natural language processing  ·  01 Dec 2022

Understanding interpersonal conflict types and their impact on perception classification

Charles Welch, Joan Plepi, Béla Neuendorf, Lucie Flek

Proceedings of the fifth workshop on natural language processing and computational social science (NLP+CSS)  ·  01 Nov 2022

Temporal graph analysis of misinformation spreaders in social media

Joan Plepi, Flora Sakketou, Henri-Jacques Geiss, Lucie Flek

Proceedings of TextGraphs-16: Graph-based methods for natural language processing  ·  01 Oct 2022

Mitigating toxic degeneration with empathetic data: Exploring the relationship between toxicity and empathy

Allison Lahnala, Charles Welch, Béla Neuendorf, Lucie Flek

Proceedings of the 2022 conference of the north american chapter of the association for computational linguistics: Human language technologies  ·  01 Jul 2022

Investigating user radicalization: A novel dataset for identifying fine-grained temporal shifts in opinion

Flora Sakketou, Allison Lahnala, Liane Vogel, Lucie Flek

Proceedings of the thirteenth language resources and evaluation conference  ·  01 Jun 2022

FACTOID: A new dataset for identifying misinformation spreaders and political bias

Flora Sakketou, Joan Plepi, Riccardo Cervero, Henri Jacques Geiss, Paolo Rosso, Lucie Flek

Proceedings of the thirteenth language resources and evaluation conference  ·  01 Jun 2022

CAISA at WASSA 2022: Adapter-tuning for empathy prediction

Allison Lahnala, Charles Welch, Lucie Flek

Proceedings of the 12th workshop on computational approaches to subjectivity, sentiment & social media analysis  ·  01 May 2022

Refining Diagnosis Paths for Medical Diagnosis based on an Augmented Knowledge Graph

Niclas Heilig, Jan Kirchhoff, Florian Stumpe, Joan Plepi, Lucie Flek, Heiko Paulheim

arXiv  ·  29 Apr 2022

2021

Perceived and intended sarcasm detection with graph attention networks

Joan Plepi, Lucie Flek

Findings of the association for computational linguistics: EMNLP 2021  ·  01 Nov 2021

AEDA: An Easier Data Augmentation Technique for Text Classification

Akbar Karimi, Leonardo Rossi, Andrea Prati

arXiv  ·  31 Aug 2021

Recursively Refined R-CNN: Instance Segmentation with Self-RoI Rebalancing

Leonardo Rossi, Akbar Karimi, Andrea Prati

arXiv  ·  03 Aug 2021

Exploring self-identified counseling expertise in online support forums

Allison Lahnala, Yuntian Zhao, Charles Welch, Jonathan K. Kummerfeld, Lawrence C An, Kenneth Resnicow, Rada Mihalcea, Verónica Pérez-Rosas

Findings of the association for computational linguistics: ACL-IJCNLP 2021  ·  01 Aug 2021

Context Transformer with Stacked Pointer Networks for Conversational Question Answering over Knowledge Graphs

Joan Plepi, Endri Kacupaj, Kuldeep Singh, Harsh Thakkar, Jens Lehmann

Eighteenth Extended Semantic Web Conference - Research Track  ·  05 May 2021

Suicide Ideation Detection via Social and Temporal User Representations using Hyperbolic Learning

Ramit Sawhney, Harshit Joshi, Rajiv Ratn Shah, Lucie Flek

Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics  ·  05 May 2021

UniParma at SemEval-2021 Task 5: Toxic Spans Detection Using CharacterBERT and Bag-of-Words Model

Akbar Karimi, Leonardo Rossi, Andrea Prati

arXiv  ·  12 Apr 2021

Improving BERT Performance for Aspect-Based Sentiment Analysis

Akbar Karimi, Leonardo Rossi, Andrea Prati

arXiv  ·  02 Mar 2021

Conversational Question Answering over Knowledge Graphs with Transformer and Graph Attention Networks

Joan Plepi, Endri Kacupaj, Kuldeep Singh, Harsh Thakkar, Jens Lehmann, Maria Maleshkova

European Chapter of the Association for Computational Linguistics (EACL)  ·  01 Jan 2021

PHASE: Learning Emotional Phase-aware Representations for Suicide Ideation Detection on Social Media

Ramit Sawhney, Harshit Joshi, Rajiv Ratn Shah, Lucie Flek

European Chapter of the Association for Computational Linguistics (EACL)  ·  01 Jan 2021

2020

Expressive interviewing: A conversational system for coping with COVID-19

Charles Welch, Allison Lahnala, Veronica Perez-Rosas, Siqi Shen, Sarah Seraj, Larry An, Kenneth Resnicow, James Pennebaker, Rada Mihalcea

Proceedings of the 1st workshop on NLP for COVID-19 (part 2) at EMNLP 2020  ·  01 Dec 2020

Adversarial Training for Aspect-Based Sentiment Analysis with BERT

Akbar Karimi, Leonardo Rossi, Andrea Prati

arXiv  ·  26 Oct 2020

A novel Region of Interest Extraction Layer for Instance Segmentation

Leonardo Rossi, Akbar Karimi, Andrea Prati

arXiv  ·  02 Oct 2020

A constrained optimization algorithm for learning GloVe embeddings with semantic lexicons

Flora Sakketou, Nicholas Ampazis

Knowledge-Based Systems  ·  01 May 2020

Deep Multimodal Image-Text Embeddings for Automatic Cross-Media Retrieval

Hadi Abdi Khojasteh, Ebrahim Ansari, Parvin Razzaghi, Akbar Karimi

arXiv  ·  28 Feb 2020

Common Conversational Community Prototype: Scholarly Conversational Assistant

Krisztian Balog, Lucie Flekova, Matthias Hagen, Rosie Jones, Martin Potthast, Filip Radlinski, Mark Sanderson, Svitlana Vakulenko, Hamed Zamani

arXiv  ·  22 Jan 2020

Exploring the Value of Personalized Word Embeddings

Charles Welch, Jonathan K. Kummerfeld, Verónica Pérez-Rosas, Rada Mihalcea

Association for Computational Linguistics (ACL)  ·  01 Jan 2020

Compositional Demographic Word Embeddings

Charles Welch, Jonathan K. Kummerfeld, Verónica Pérez-Rosas, Rada Mihalcea

Association for Computational Linguistics (ACL)  ·  01 Jan 2020

Improving Low Compute Language Modeling with In-Domain Embedding Initialisation

Charles Welch, Rada Mihalcea, Jonathan K. Kummerfeld

Association for Computational Linguistics (ACL)  ·  01 Jan 2020

A Hessian Free Neural Networks Training Algorithm with Curvature Scaled Adaptive Momentum

Flora Sakketou, Nicholas Ampazis

Lecture Notes in Computer Science  ·  01 Jan 2020

Returning the N to NLP: Towards Contextually Personalized Classification Models

Lucie Flek

Association for Computational Linguistics (ACL)  ·  01 Jan 2020

2019

A Matrix Factorization Algorithm for Efficient Recommendations in Social Rating Networks Using Constrained Optimization

Nicholas Ampazis, Theodoros Emmanouilidis, Flora Sakketou

Machine Learning and Knowledge Extraction  ·  11 Aug 2019

Learning From Personal Longitudinal Dialog Data

Charles Welch, Veronica Perez-Rosas, Jonathan K. Kummerfeld, Rada Mihalcea, Erik Cambria

IEEE Intelligent Systems  ·  01 Jul 2019

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

Charles Welch, Verónica Pérez-Rosas, Jonathan K. Kummerfeld, Rada Mihalcea

arXiv  ·  29 Apr 2019

Extracting an English-Persian Parallel Corpus from Comparable Corpora

Akbar Karimi, Ebrahim Ansari, Bahram Sadeghi Bigham

arXiv  ·  02 Apr 2019

On the Invariance of the SELU Activation Function on Algorithm and Hyperparameter Selection in Neural Network Recommenders

Flora Sakketou, Nicholas Ampazis

IFIP Advances in Information and Communication Technology  ·  01 Jan 2019

2018

Proceedings of the second workshop on stylistic variation

Julian Brooke, Lucie Flekova, Moshe Koppel, Thamar Solorio

Association for Computational Linguistics  ·  01 Jun 2018

Generating Recommendations by Graph Traversal in Social Rating Networks

Flora Sakketou, Nicholas Ampazis, Dimosthenis Drivaliaris

Association for Computing Machinery (ACM)  ·  01 Jan 2018

The impact of actively open-minded thinking on social media communication

Jordan Carpenter, Daniel Preotiuc-Pietro, Jenna Clark, Lucie Flekova, Laura Smith, Margaret L Kern, Anneke Buffone, Lyle Ungar, Martin Seligman

Judgment and Decision Making  ·  01 Jan 2018

Changes in Psycholinguistic Attributes of Social Media Users Before, During, and After Self-Reported Influenza Symptoms

Lucie Flekova, Vasileios Lampos, Ingemar Cox

Association for Computational Linguistics (ACL)  ·  01 Jan 2018

2016

Targeted sentiment to understand student comments

Charles Welch, Rada Mihalcea

Proceedings of COLING 2016, the 26th international conference on computational linguistics: Technical papers  ·  01 Dec 2016