Search Results for author: Qianchu Liu

Found 12 papers, 3 papers with code

Towards Better Context-aware Lexical Semantics:Adjusting Contextualized Representations through Static Anchors

no code implementations EMNLP 2020 Qianchu Liu, Diana McCarthy, Anna Korhonen

One of the most powerful features of contextualized models is their dynamic embeddings for words in context, leading to state-of-the-art representations for context-aware lexical semantics.

Improving Machine Translation of Rare and Unseen Word Senses

no code implementations WMT (EMNLP) 2021 Viktor Hangya, Qianchu Liu, Dario Stojanovski, Alexander Fraser, Anna Korhonen

The performance of NMT systems has improved drastically in the past few years but the translation of multi-sense words still poses a challenge.

Bilingual Lexicon Induction NMT +3

Measuring Context-Word Biases in Lexical Semantic Datasets

no code implementations13 Dec 2021 Qianchu Liu, Diana McCarthy, Anna Korhonen

Our findings demonstrate that models are usually not being tested for word-in-context semantics in the same way as humans are in these tasks, which helps us better understand the model-human gap.

Retrieval

MirrorWiC: On Eliciting Word-in-Context Representations from Pretrained Language Models

1 code implementation CoNLL (EMNLP) 2021 Qianchu Liu, Fangyu Liu, Nigel Collier, Anna Korhonen, Ivan Vulić

Recent work indicated that pretrained language models (PLMs) such as BERT and RoBERTa can be transformed into effective sentence and word encoders even via simple self-supervised techniques.

Contextualised Word Representations Contrastive Learning +1

AM2iCo: Evaluating Word Meaning in Context across Low-Resource Languages with Adversarial Examples

1 code implementation EMNLP 2021 Qianchu Liu, Edoardo M. Ponti, Diana McCarthy, Ivan Vulić, Anna Korhonen

In order to address these gaps, we present AM2iCo (Adversarial and Multilingual Meaning in Context), a wide-coverage cross-lingual and multilingual evaluation set; it aims to faithfully assess the ability of state-of-the-art (SotA) representation models to understand the identity of word meaning in cross-lingual contexts for 14 language pairs.

XCOPA: A Multilingual Dataset for Causal Commonsense Reasoning

1 code implementation EMNLP 2020 Edoardo Maria Ponti, Goran Glavaš, Olga Majewska, Qianchu Liu, Ivan Vulić, Anna Korhonen

In order to simulate human language capacity, natural language processing systems must be able to reason about the dynamics of everyday situations, including their possible causes and effects.

Ranked #3 on Cross-Lingual Transfer on XCOPA (using extra training data)

Cross-Lingual Transfer Translation +1

Investigating Cross-Lingual Alignment Methods for Contextualized Embeddings with Token-Level Evaluation

no code implementations CONLL 2019 Qianchu Liu, Diana McCarthy, Ivan Vuli{\'c}, Anna Korhonen

In this paper, we present a thorough investigation on methods that align pre-trained contextualized embeddings into shared cross-lingual context-aware embedding space, providing strong reference benchmarks for future context-aware crosslingual models.

Retrieval Sentence +1

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