Search Results for author: Vagelis Hristidis

Found 7 papers, 1 papers with code

EcoRank: Budget-Constrained Text Re-ranking Using Large Language Models

no code implementations16 Feb 2024 Muhammad Shihab Rashid, Jannat Ara Meem, Yue Dong, Vagelis Hristidis

We study how to maximize the re-ranking performance given a budget, by navigating the vast search spaces of prompt choices, LLM APIs, and budget splits.

Re-Ranking

PAT-Questions: A Self-Updating Benchmark for Present-Anchored Temporal Question-Answering

no code implementations16 Feb 2024 Jannat Ara Meem, Muhammad Shihab Rashid, Yue Dong, Vagelis Hristidis

Existing work on Temporal Question Answering (TQA) has predominantly focused on questions anchored to specific timestamps or events (e. g. "Who was the US president in 1970?").

Question Answering

NORMY: Non-Uniform History Modeling for Open Retrieval Conversational Question Answering

1 code implementation7 Feb 2024 Muhammad Shihab Rashid, Jannat Ara Meem, Vagelis Hristidis

A typical OrConvQA pipeline consists of three modules: a Retriever to retrieve relevant documents from the collection, a Reranker to rerank them given the question and the context, and a Reader to extract an answer span.

Conversational Question Answering Keyphrase Extraction +1

Generalized Zero-shot Intent Detection via Commonsense Knowledge

no code implementations4 Feb 2021 A. B. Siddique, Fuad Jamour, Luxun Xu, Vagelis Hristidis

Thus, these models should seamlessly adapt and classify utterances with both seen and unseen intents -- unseen intents emerge after deployment and they do not have training data.

Intent Detection

Linguistically-Enriched and Context-Aware Zero-shot Slot Filling

no code implementations16 Jan 2021 A. B. Siddique, Fuad Jamour, Vagelis Hristidis

Thus, it is imperative that these models seamlessly adapt and fill slots from both seen and unseen domains -- unseen domains contain unseen slot types with no training data, and even seen slots in unseen domains are typically presented in different contexts.

named-entity-recognition Named Entity Recognition +3

App-Aware Response Synthesis for User Reviews

no code implementations31 Jul 2020 Umar Farooq, A. B. Siddique, Fuad Jamour, Zhijia Zhao, Vagelis Hristidis

Solving the challenge by simply building a model per app (i. e., training with review-response pairs of a single app) may be insufficient because individual apps have limited review-response pairs, and such pairs typically lack the relevant information needed to respond to a new review.

Machine Reading Comprehension Response Generation

Unsupervised Paraphrasing via Deep Reinforcement Learning

no code implementations5 Jul 2020 A. B. Siddique, Samet Oymak, Vagelis Hristidis

Our evaluation also shows that PUP achieves a great trade-off between semantic similarity and diversity of expression.

Image Captioning Paraphrase Generation +5

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