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Temporal Knowledge Graph Forecasting Without Knowledge Using In-Context Learning

Lee, Dong-Ho, Ahrabian, Kian, Jin, Woojeong, Morstatter, Fred, Pujara, Jay

arXiv.org Artificial Intelligence

Temporal knowledge graph (TKG) forecasting benchmarks challenge models to predict future facts using knowledge of past facts. In this paper, we apply large language models (LLMs) to these benchmarks using in-context learning (ICL). We investigate whether and to what extent LLMs can be used for TKG forecasting, especially without any fine-tuning or explicit modules for capturing structural and temporal information. For our experiments, we present a framework that converts relevant historical facts into prompts and generates ranked predictions using token probabilities. Surprisingly, we observe that LLMs, out-of-the-box, perform on par with state-of-the-art TKG models carefully designed and trained for TKG forecasting. Our extensive evaluation presents performances across several models and datasets with different characteristics, compares alternative heuristics for preparing contextual information, and contrasts to prominent TKG methods and simple frequency and recency baselines. We also discover that using numerical indices instead of entity/relation names, i.e., hiding semantic information, does not significantly affect the performance ($\pm$0.4\% Hit@1). This shows that prior semantic knowledge is unnecessary; instead, LLMs can leverage the existing patterns in the context to achieve such performance. Our analysis also reveals that ICL enables LLMs to learn irregular patterns from the historical context, going beyond simple predictions based on common or recent information.


Experimental radar may be used to detect stray drones in the 'immediate vicinity' of the Superbowl

Daily Mail - Science & tech

A startup funded by Microsoft owner Bill Gates is looking for permission to test a radar-powered drone detector system at the Superbowl this Sunday. Echodyne has filed an application with the Federal Communications Commission's (FCC) to experiment with the technology during the NFL's marquee event in Atlanta. It is capable of detecting drones up to 0.6 miles away and remotely disable them. The radar focused tech company from Seattle hopes to operate two experimental radars'in the immediate vicinity' of the stadium. It will be operated alongside the FBI and'alert authorities' of any unidentified drone activity during the event if it receives authorisation for the project.