Papers by Sreedhar Reddy
A Retrofitting Model for Incorporating Semantic Relations into Word Embeddings (2020.coling-main)
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| Challenge: | Existing word embedding models mix semantic similarity with other types of relatedness. |
| Approach: | They propose a model that leverages relational knowledge available in a knowledge resource to improve word embeddings. |
| Outcome: | The proposed model improves word embeddings on synonymy, antonymy and hypernymy relations in WordNet and significantly improves lexical entailment detection task. |
Retrofitting Light-weight Language Models for Emotions using Supervised Contrastive Learning (2023.emnlp-main)
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| Challenge: | a novel retrofitting method to induce emotion aspects into pre-trained language models is proposed . the models are computationally less expensive and open, but do not capture affective aspects of human communication well. |
| Approach: | They propose a retrofitting method to induce emotion aspects into pre-trained language models . they retrofit text fragments exhibiting similar emotions into pretrained networks . |
| Outcome: | The proposed method produces emotion-aware text representations for sentiment analysis and sarcasm detection tasks. |
Emotion Enriched Retrofitted Word Embeddings (2022.coling-1)
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| Challenge: | Word embeddings that encode lexical-semantic relations do not capture emotion aspects of words. |
| Approach: | They propose a retrofitting method to update the vectors of emotion bearing words . they find that the retrofitted embeddings achieve better distances between clusters . |
| Outcome: | The proposed method achieves better distances between clusters and clusters for words having the same emotions. |
Learning Improvised Chatbots from Adversarial Modifications of Natural Language Feedback (2020.findings-emnlp)
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| Challenge: | Currently, user feedback contains extraneous sequences hindering their usefulness as a training sample. |
| Approach: | They propose a generative adversarial model that converts noisy feedback into a plausible natural response in a conversation and fools the discriminator which distinguishes feedback from natural responses. |
| Outcome: | The proposed model improves the original chatbot performance from 69.94%to 75.96% in ranking correct responses on the PERSONACHATdataset. |
Affective Retrofitted Word Embeddings (2022.aacl-main)
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| Challenge: | Word embeddings do not capture affective dimensions of valence, arousal, and dominance . valency, valance, and adolescence are present in words, but are not represented in text . |
| Approach: | They propose a method for updating word embeddings for affective meaning . they use a non-linear transformation function that maps pre-trained embedders to an affective vector space . |
| Outcome: | The proposed method improves inter-cluster and intra-c cluster distances for emotion-bearing words. |