Papers by Silviu Vlad Oprea
Multi-Stage Framework with Refinement Based Point Set Registration for Unsupervised Bi-Lingual Word Alignment (2022.coling-1)
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| Challenge: | Existing unsupervised approaches to cross-lingual word embeddings suffer from instability and convergence issues. |
| Approach: | They propose a multi-stage framework for unsupervised mapping of bi-lingual word embeddings onto a shared vector space by combining adversarial initialization, refinement procedure and point set registration. |
| Outcome: | The proposed framework shows robustness against variable adversarial performance on diverse languages. |
LoRA-Guard: Parameter-Efficient Guardrail Adaptation for Content Moderation of Large Language Models (2024.emnlp-main)
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| Challenge: | Existing model-based guardrails have not been designed for resource-constrained computational portable devices such as mobile phones. |
| Approach: | They propose a parameter-efficient guardrail adaptation method that relies on knowledge sharing between LLMs and guardrail models to adapt to content moderation tasks. |
| Outcome: | The proposed method outperforms existing guardrail methods with lower parameter overhead and higher accuracy on the generative task. |
Should a Chatbot be Sarcastic? Understanding User Preferences Towards Sarcasm Generation (2022.acl-long)
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| Challenge: | sarcasm generation research focused on creating more human-like interactions . previous research focused only on how to generate text that people perceive as sarkastic . |
| Approach: | They propose a theory-driven framework for generating sarcastic responses that allows us to control linguistic devices included during generation. |
| Outcome: | The proposed framework allows us to control the linguistic devices included during generation. |