Thailand

This study describes the model design of the NYCU-NLP system for the EXALT shared task at the WASSA 2024 workshop. We instruction-tune several large language models and then assemble various model combinations as our main system architecture for cross-lingual emotion and trigger detection in tweets. Experimental results showed that our best performing submission is an assembly of the Starling (7B) and Llama 3 (8B) models. Our submission was ranked sixth of 17 participating systems for the emotion detection subtask, and fifth of 7 systems for the binary trigger detection subtask.

ACL 2024

NYCU-NLP at EXALT 2024: Assembling Large Language Models for
Cross-Lingual Emotion and Trigger Detection

assembly mechanism

instruction fine-tuning

large language models

workshop paper

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The 62nd Annual Meeting of the Association for Computational Linguistics (ACL 2024) will take place in Bangkok, Thailand from August 11th to 16th, 2024. More information will be announced soon.

This paper describes our task 1 submission for the WASSA 2024 shared task on Explainability for Cross-lingual Emotion in Tweets. Our task is to predict the correct emotion label (Anger, Sadness, Fear, Joy, Love, and Neutral) for a dataset of English, Dutch, French, Spanish, and Russian tweets, while training exclusively on English emotion labeled data, to reveal what kind of emotion detection information is trans- ferable cross-language (Maladry et al., 2024). To that end, we used an ensemble of mod- els with a GPT-4 decider. Our ensemble con- sisted of a few-shot GPT-4 prompt system and a TwHIN-BERT system fine-tuned on the EX- ALT and additional English data. We ranked 8th place under the name WU_TLAXE with an F1 Macro score of 0.573 on the test set. We also experimented with an English-only TwHIN-BERT model by translating the other languages into English for inference, which proved to be worse than the other models.

WU_TLAXE at WASSA 2024 Explainability for Cross-Lingual Emotion in
Tweets Shared Task 1: Emotion through Translation using TwHIN-BERT
and GPT

This presentation explains our submitted systems for WASSA 2024 Shared Task 2: Cross-Lingual Emotion Detection. We implemented a BERT-based classifier and an in-context learning-based system. Our best-performing model, using English Chain of Thought prompts with trigger words, reached 3rd overall with an F1 score of 0.6015. Further analysis on the scalability and transferability of the monolingual English dataset on cross-lingual tasks demonstrates the importance of data quality over quantity. We also found that augmented multilingual data does not necessarily perform better than English monolingual data in cross-lingual tasks.

Effectiveness of Scalable Monolingual Data and Trigger Words Prompting
on Cross-Lingual Emotion Detection Task

This paper presents our system built for the WASSA-2024 Cross-lingual Emotion Detection Shared Task. The task consists of two subtasks: first, to assess an emotion label from six possible classes for a given tweet in one of five languages, and second, to predict words triggering the detected emotions in binary and numerical formats. Our proposed approach revolves around fine-tuning quantized large language models, specifically Orca 2, with low-rank adapters (LoRA) and multilingual Transformer-based models, such as XLM-R and mT5. We enhance performance through machine translation for both subtasks and trigger word switching for the second subtask. The system achieves excellent performance, ranking 1st in numerical trigger words detection, 3rd in binary trigger words detection, and 7th in emotion detection.

UWB at WASSA-2024 Shared Task 2: Cross-lingual Emotion Detection

Emotion detection from text is a crucial task in understanding natural language with wide-ranging applications. Existing approaches for multilingual emotion detection from text face challenges with data scarcity across many languages and a lack of interpretability. We propose a novel method that leverages both monolingual and multilingual pre-trained language models to improve performance and interpretability. Our approach involves 1) training a high-performing English monolingual model in parallel with a multilingual model and 2) using knowledge distillation to transfer the emotion detection capabilities from the monolingual teacher to the multilingual student model. Experiments on a multilingual dataset demonstrate significant performance gains for refined multilingual models like XLM-RoBERTa and E5 after distillation. Furthermore, our approach enhances interpretability by enabling better identification of emotion-trigger words. Our work presents a promising direction for building accurate, robust and explainable multilingual emotion detection systems.

Knowledge Distillation from Monolingual to Multilingual Models for
Intelligent and Interpretable Multilingual Emotion Detection

This paper addresses the shared task of multilingual emotion detection in tweets, presented at the Workshop on Computational Approaches to Subjectivity, Sentiment, and Social Media Analysis (WASSA) co-located with the ACL 2024 conference. The task involves predicting emotions from six classes in tweets from five different languages using only English for model training. Our approach focuses on addressing class imbalance through data augmentation, hierarchical classification, and the application of focal loss and weighted cross-entropy loss functions. These methods enhance our transformer-based model’s ability to transfer emotion detection capabilities across languages, resulting in improved performance despite the constraints of limited computational resources.

PCICUNAM at WASSA 2024: Cross-lingual Emotion Detection Task with
Hierarchical Classification and Weighted Loss Functions

This paper describes the system developed by the HITSZ-HLT team for WASSA-2024 Shared Task 2, which addresses two closely linked sub-tasks: Cross-lingual Emotion Detection and Binary Trigger Word Detection in tweets. The main goal of Shared Task 2 is to simultaneously identify the emotions expressed and detect the trigger words across multiple languages. To achieve this, we introduce a Language-agnostic Multi Task Learning (LaMTL) framework that integrates emotion prediction and emotion trigger word detection tasks. By fostering synergistic interactions between task-specific and task-agnostic representations, the LaMTL aims to mutually enhance emotional cues, ultimately improving the performance of both tasks. Additionally, we leverage large-scale language models to translate the training dataset into multiple languages, thereby fostering the formation of language-agnostic representations within the model, significantly enhancing the model's ability to transfer and perform well across multilingual data. Experimental results demonstrate the effectiveness of our framework across both tasks, with a particular highlight on its success in achieving second place in sub-task 2.

HITSZ-HLT at WASSA-2024 Shared Task 2: Language-agnostic Multi-task
Learning for Explainability of Cross-lingual Emotion Detection

This paper presents the Chinchunmei team's contributions to the WASSA2024 Shared-Task 1: Empathy Detection and Emotion Classification. We participated in Tracks 1, 2, and 3 to predict empathetic scores based on dialogue, article, and essay content. We choose Llama3-8b-instruct as our base model. We developed three supervised fine-tuning schemes: standard prediction, role-play, and contrastive prediction, along with an innovative scoring calibration method called Contrastive Reasoning Calibration during inference. Pearson Correlation was used as the evaluation metric across all tracks. For Track 1, we achieved 0.43 on the devset and 0.17 on the testset. For Track 2 emotion, empathy, and polarity labels, we obtained 0.64, 0.66, and 0.79 on the devset and 0.61, 0.68, and 0.58 on the testset. For Track 3 empathy and distress labels, we got 0.64 and 0.56 on the devset and 0.33 and 0.35 on the testset.

Chinchunmei at WASSA 2024 Empathy and Personality Shared Task:Boosting LLM’s Prediction with Role-play Augmentation and ContrastiveReasoning Calibration

In the realm of conversational empathy and emotion prediction, emotions are frequently categorized into multiple levels. This presentation seeks to enhance the performance of emotion prediction models by incorporating the Pearson correlation coefficient as a regularization term within the loss function. This regularization approach ensures closer alignment between predicted and actual emotion levels, mitigating extreme predictions and resulting in smoother and more consistent outputs. Such outputs are essential for capturing the subtle transitions between continuous emotion levels. Through experimental comparisons between models with and without Pearson regularization, our findings demonstrate that integrating the Pearson correlation coefficient significantly boosts model performance, yielding higher correlation scores and more accurate predictions. Our system officially ranked 9th at the Track 2: CONV-turn.

Zhenmei at WASSA-2024 Empathy and Personality Shared Track:
Incorporating Pearson Correlation Coefficient as a Regularization Term for
Enhanced Empathy and Emotion Prediction in Conversational Turns

For the WASSA 2024 Empathy and Personality Prediction Shared Task, we propose a novel turn-level empathy detection method that decomposes empathy into six psychological indicators: Emotional Language, PerspectiveTaking, Sympathy and Compassion, Extroversion, Openness, and Agreeableness. A pipeline of text enrichment using a Large Language Model (LLM) followed by DeBERTA finetuning demonstrates a significant improvement in the Pearson Correlation Coefficient and F1 scores for empathy detection, highlighting the effectiveness of our approach. Our system officially ranked 7th at the CONV-turn track.

Empaths at WASSA 2024 Empathy and Personality Shared Task:
Turn-Level Empathy Prediction Using Psychological Indicators

This paper proposes a novel ensemble ap- proach that combines Graph Neural Networks (GNNs) and LightGBM to enhance personal- ity prediction based on the personality Big 5 model. By integrating BERT embed- dings from user essays with knowledge graph- derived embeddings, our method accurately captures rich semantic and relational informa- tion. Additionally, a special loss function that combines Mean Squared Error (MSE), Pear- son correlation loss, and contrastive loss to im- prove model performance is introduced. The proposed ensemble model, made of Graph Convolutional Networks (GCNs), Graph At- tention Networks (GATs), and LightGBM, demonstrates superior performance over other models, with significant improvements in pre- diction accuracy for the Big Five personality traits achieved. Our system officially ranked 2nd at the Track 4: PER track

NU at WASSA 2024 Empathy and Personality Shared Task: Enhancing
Personality Predictions with Knowledge Graphs; A Graphical Neural
Network and LightGBM Ensemble Approach

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NYCU-NLP at EXALT 2024: Assembling Large Language Models for Cross-Lingual Emotion and Trigger Detection

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WU_TLAXE at WASSA 2024 Explainability for Cross-Lingual Emotion in Tweets Shared Task 1: Emotion through Translation using TwHIN-BERT and GPT

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