Challenge: Emotion and sentiment classification in dialogues has gained popularity in recent times . a number of datasets are imbalanced in representing different emotions and consist of an only single emotion.
Approach: They propose to use a dataset to analyze emotions and sentiments in dialogues . they use text, audio and video to identify the correct emotions with the appropriate intensity and sentiment in an utterance of a dialogue .
Outcome: The proposed datasets are balanced in representing different emotions and consist of only one emotion.

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Challenge: Emotion recognition in conversations has gained popularity due to its potential applications. Until now, a large multimodal multi-party emotional conversational database containing more than two speakers per dialogue was missing.
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MPDD: A Multi-Party Dialogue Dataset for Analysis of Emotions and Interpersonal Relationships (2020.lrec-1)

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Challenge: Existing datasets with emotion and relation labels for dialogues are limited.
Approach: They use a Chinese dialogue dataset to annotate emotions and interpersonal relationships on each utterance.
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EmoInHindi: A Multi-label Emotion and Intensity Annotated Dataset in Hindi for Emotion Recognition in Dialogues (2022.lrec-1)

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Challenge: Existing datasets for emotion recognition in dialogues are in English . existing datasets are limited to a few languages like Hindi .
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UniMSE: Towards Unified Multimodal Sentiment Analysis and Emotion Recognition (2022.emnlp-main)

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Challenge: Existing studies study sentiment and emotion separately and do not fully exploit the complementary knowledge behind the two.
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Multimodal Emotion Recognition in Conversations: A Survey of Methods, Trends, Challenges and Prospects (2025.findings-emnlp)

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Challenge: Multimodal Emotion Recognition in Conversations (MERC) is a new way to enhance human-computer interaction.
Approach: This survey offers a systematic overview of Multimodal Emotion Recognition in Conversations . it examines motivations, core tasks, representative methods, and evaluation strategies .
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EmotionLines: An Emotion Corpus of Multi-Party Conversations (L18-1)

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Challenge: Emotion is a critical characteristic to distinguish people from machines.
Approach: They propose a dataset with emotions labeling on all utterances in each dialogue . they use Friends TV scripts and Facebook messenger dialogues to collect the data .
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M3ED: Multi-modal Multi-scene Multi-label Emotional Dialogue Database (2022.acl-long)

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Challenge: Existing data resources to support multimodal affective analysis in dialogues are limited in scale and diversity.
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A Multimodal Corpus for Emotion Recognition in Sarcasm (2022.lrec-1)

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Challenge: sarcasm and emotion are often used in conversational systems to generate the right response.
Approach: They use a sarcastic expression dataset pre-annotated with 9 emotions to detect emotion . they identify and correct 343 incorrect emotion labels and label each sarkastic utterance with one of four sarcasm types.
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Aspect-Based Emotion Analysis and Multimodal Coreference: A Case Study of Customer Comments on Adidas Instagram Posts (2022.lrec-1)

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Challenge: Aspect-based sentiment analysis of user-generated content has been relatively unexplored in recent years.
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MELD-ST: An Emotion-aware Speech Translation Dataset (2024.findings-acl)

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Challenge: Emotion plays a crucial role in human conversation.
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