ECOLOGY/EVOLUTION: One if by Land, Two if by Sea

Two “what if” experiments

Three perspectives are better than one. And it has been over 15 years since the two papers under discussion were published--a long time to remember who was thinking what. So the three of us (Roger, Jun, and I) will have three separate goes at reconstructing the events. For over 10 years, and through the early 1980s, our lab had concentrated on gene regulation in phage lambda. By 1985 we had cle...

Determining if Two Documents are by the Same Author

Almost any conceivable authorship attribution problem is reducible to one fundamental problem: was a pair of (possibly short) documents written by the same author. In this paper, we offer an (almost) unsupervised method for solving this problem with surprisingly high accuracy. The main idea is to use repeated feature sub-sampling methods to determine if one document of the pair allows us to sel...

Determining if two documents are written by the same author

Almost any conceivable authorship attribution problem can be reduced to one fundamental problem: whether a pair of (possibly short) documents were written by the same author. In this article, we offer an (almost) unsupervised method for solving this problem with surprisingly high accuracy. The main idea is to use repeated feature subsampling methods to determine if one document of the pair allo...

Embedding If and Only If

Compounds of indicative conditionals present some puzzling phenomena. Perhaps most striking, some nested indicative conditionals are uninterpretable. Proponents of NTV hold that indicative conditionals do not have truth values, and they use this to explain why nested indicative conditionals are sometimes uninterpretable: the embedded conditional does not provide the truth conditions needed by t...

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