473 research outputs found
Linear rank preservers of tensor products of rank one matrices
Let be integers larger than or equal to 2. We characterize
linear maps such that
Applying
this result, we extend two recent results on linear maps that preserving the
rank of special classes of matrices.Comment: 12 page
Incremental Prompting: Episodic Memory Prompt for Lifelong Event Detection
Lifelong event detection aims to incrementally update a model with new event
types and data while retaining the capability on previously learned old types.
One critical challenge is that the model would catastrophically forget old
types when continually trained on new data. In this paper, we introduce
Episodic Memory Prompts (EMP) to explicitly preserve the learned task-specific
knowledge. Our method adopts continuous prompt for each task and they are
optimized to instruct the model prediction and learn event-specific
representation. The EMPs learned in previous tasks are carried along with the
model in subsequent tasks, and can serve as a memory module that keeps the old
knowledge and transferring to new tasks. Experiment results demonstrate the
effectiveness of our method. Furthermore, we also conduct a comprehensive
analysis of the new and old event types in lifelong learning.Comment: Accepted to COLING'22 Main Conference (Short paper). 9 pages, 2
figures, 3 table
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