We develop a highly parsimonious model to describe and predict stock-keeping unit (SKU) choice in any frequently-bought consumer packaged good category. The model has 20 parameters for a category that has 3 salient attributes, and in general it has 8 + 4 ¢ k parameters for a k-attribute product category. This parsimony is accomplished by neither discarding part of the data nor aggregating the l...

In this paper we present eFarnel, a new electronic voting scheme based on the paper-based Farnel protocol. The new scheme corrects problems observed in previous proposes to simulate Farnel electronically. Moreover, we also define a new kind of mix net, called F-Mix-Net, which is required by our protocol.

A MIX net takes a list of ciphertexts (c1; ; cN) and outputs a permuted list of the plaintexts (m1; ; mN) without revealing the relationship between (c1; ; cN) and (m1; ; mN). This paper shows that the Jakobsson's ash MIX of PODC'99, which was believed to be the most eecient robust MIX net, is broken. The rst MIX server can prevent computing the correct output with probability 1 in our attack. ...