A better way to search through scientific papers

ARTIFICIAL intelligence (AI) is not just for playing games. It also has important practical uses. One such is in Semantic Scholar, a system developed by researchers at the Allen Institute for Artificial Intelligence, in Seattle, for the purpose of ferreting out the scientific papers most relevant to a particular problem. This week Marie Hagman, the project’s leader, and her colleagues have launched an updated version of the system. They have added 26m biomedical-research papers to the 12m previously contained in its database, and upgraded the way that the database’s contents can be searched and correlated. Instead of relying on citations in other papers, or the frequency of recurring phrases to rank the relevance of papers, as it once did and rivals such as Google Scholar still do, the new version of Semantic Scholar applies AI to try to understand the context of those phrases, and thus achieve better results.

Like most AI systems, the new Semantic Scholar relies on a…

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Source:: The Economits – Science and technology

Traces of old hurricanes show how hard climate science is

Incoming!

THAT hurricanes are likely to become more powerful as the climate warms is not a matter much debated among researchers. A warmer climate will increase sea-surface temperatures relative to those of the adjacent atmosphere in some regions, leading to more evaporation, more clouds and stronger storms. You might expect this to be reflected in the geological record. But a study just published in Geology by Michael Toomey of the United States Geological Survey suggests, counter-intuitively, that the hurricanes which struck Florida during a cool period 12,000 years ago were more powerful than those during a subsequent time of warmth.

Dr Toomey’s findings stem from his analysis of sediment cores collected near the Dry Tortugas, islands off Florida’s coast. These contain strata laid down during the Younger Dryas, a time when the climate cooled, and also during the warmer years that followed it. The Younger Dryas is thought to have…

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Source:: The Economits – Science and technology

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