Papers by Weizhi Fei
Wasserstein-Fisher-Rao Embedding: Logical Query Embeddings with Local Comparison and Global Transport (2023.findings-acl)
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| Challenge: | Existing methods for answering complex queries on knowledge graphs lack a local and global scoring function. |
| Approach: | They propose a convolution-based algorithm for linear time computation and a block diagonal kernel to enforce the trade-off between local and global embeddings. |
| Outcome: | The proposed model outperforms existing methods on standard datasets, evaluation sets with combinatorially complex queries, and hierarchical knowledge graphs. |
Extending Complex Logical Queries on Uncertain Knowledge Graphs (2025.acl-long)
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| Challenge: | Existing studies on logical queries on knowledge graphs overlook the incompleteness of KGs. |
| Approach: | They propose an ML-based approach to answer soft queries on uncertain knowledge . they propose to use forward inference and backward calibration to avoid catastrophic errors . |
| Outcome: | The proposed method ensures there are no catastrophic cascading errors while maintaining the same complexity as state-of-the-art inference algorithms for first-order queries. |
Extending Context Window of Large Language Models via Semantic Compression (2024.findings-acl)
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| Challenge: | Existing models rely on a quadratic computation to generate long texts . current models impose limitations on the length of text inputs . |
| Approach: | They propose a semantic compression method that extends the context window of large language models . the method reduces the semantic redundancy of long inputs before passing them to the LLMs . |
| Outcome: | The proposed method extends the context window of large language models across tasks . it exhibits consistent fluency in text generation while reducing associated computational overhead. |