Hiroaki Ozaki
19 papers · 2019–2025 · 6 venues · across top CS/AI venues
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Natural Language Processing
(14)
Machine Learning
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pre-trained language model
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text classification
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ensemble learning
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transfer learning
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semantic parsing
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cross-lingual transfer
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biaffine attention
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zero-shot learning
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deep learning
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multi-task learning
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annotation projection
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multilingual nlp
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self-supervised learning
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image classification
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multimodal learning
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argument mining
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dependency parsing
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universal dependencies
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natural language processing
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syntactic parsing
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Papers
Structure Modeling Approach for UD Parsing of Historical Modern Japanese
ACL 2025
Long Unit Word Tokenization and Bunsetsu Segmentation of Historical Japanese
ACL 2024
Hitachi at SemEval-2023 Task 3: Exploring Cross-lingual Multi-task Strategies for Genre and Framing Detection in Online News
SemEval 2023
Hitachi at SemEval-2023 Task 4: Exploring Various Task Formulations Reveals the Importance of Description Texts on Human Values
SemEval 2023
How does the task complexity of masked pretraining objectives affect downstream performance?
ACL 2023
Hitachi at SemEval-2022 Task 10: Comparing Graph- and Seq2Seq-based Models Highlights Difficulty in Structured Sentiment Analysis
SemEval 2022
Hitachi at SemEval-2022 Task 2: On the Effectiveness of Span-based Classification Approaches for Multilingual Idiomaticity Detection
SemEval 2022
Rethinking Fanoβs Inequality in Ensemble Learning
ICML 2022
i-Parser: Interactive Parser Development Kit for Natural Language Processing
AAAI 2021
Project-then-Transfer: Effective Two-stage Cross-lingual Transfer for Semantic Dependency Parsing
EACL 2021
Hitachi at MRP 2020: Text-to-Graph-Notation Transducer
CoNLL 2020
Hitachi at SemEval-2020 Task 10: Emphasis Distribution Fusion on Fine-Tuned Language Models
SemEval 2020
Hitachi at SemEval-2020 Task 11: An Empirical Study of Pre-Trained Transformer Family for Propaganda Detection
SemEval 2020
Hitachi at SemEval-2020 Task 12: Offensive Language Identification with Noisy Labels Using Statistical Sampling and Post-Processing
SemEval 2020
Hitachi at SemEval-2020 Task 3: Exploring the Representation Spaces of Transformers for Human Sense Word Similarity
SemEval 2020
Hitachi at SemEval-2020 Task 7: Stacking at Scale with Heterogeneous Language Models for Humor Recognition
SemEval 2020
Hitachi at SemEval-2020 Task 8: Simple but Effective Modality Ensemble for Meme Emotion Recognition
SemEval 2020
Towards Better Non-Tree Argument Mining: Proposition-Level Biaffine Parsing with Task-Specific Parameterization
ACL 2020
Hitachi at MRP 2019: Unified Encoder-to-Biaffine Network for Cross-Framework Meaning Representation Parsing
CoNLL 2019