Decoding Inside Information

Decoding Inside Information

Exploiting the fact that insiders trade for a variety of reasons, we show that there is predictable, identifiable “routine” insider trading that is not informative for the future of firms. A portfolio strategy that focuses solely on the remaining “opportunistic” traders yields value-weighted abnormal returns of 82 basis points per month, while abnormal returns associated with routine traders ar...

Information Geometry and Iterative Decoding

Motivated by the success of iterative decoding algorithms, we consider the general problem of making inferences based on observed data, which are known a-priori to satisfy multiple sets of constraints. We consider relative entropy minimisation and an iterative algorithm for its calculation, which exploits the presence of multiple constraints. Using these principles, optimal iterative decoders, ...

Decoding "Coding": Information and DNA

Decoding Information in Cell Shape

Shape is an indicator of cell health. But how is the information in shape decoded? We hypothesize that decoding occurs by modulation of signaling through changes in plasma membrane curvature. Using analytical approaches and numerical simulations, we studied how elongation of cell shape affects plasma membrane signaling. Mathematical analyses reveal transient accumulation of activated receptors ...

Quantum Information Set Decoding Algorithms

The security of code-based cryptosystems such as the McEliece cryptosystem relies primarily on the difficulty of decoding random linear codes. The best decoding algorithms are all improvements of an old algorithm due to Prange: they are known under the name of information set decoding techniques. It is also important to assess the security of such cryptosystems against a quantum computer. This ...