Iterated Function Systems (IFS) are interesting parametric models for generating fractal sets and functions. The general idea is to compress, deform and translate a given set or function with a collection of operators and to iterate the procedure. Under weak assumptions, IFS possess a unique fixed point which is in general fractal. IFS were introduced in a deterministic context, then were gener...

This paper describes a seminar course designed by IBM and Columbia University on the topic of Semantic Technologies, in particular as used in IBM WatsonTM — a large scale Question Answering system which famously won at Jeopardy! R © against two human grand champions. It was first offered at Columbia University during the 2013 spring semester, and will be offered at other institutions starting i...

Propargyl groups are attractive functional groups for labeling purposes, as they allow CuAAC-mediated bioconjugation. Their size minimally exceeds that of a methyl group, the latter being frequent in natural nucleotide modifications. To understand under which circumstances propargyl-containing oligodeoxynucleotides preserve base pairing, we focused on the exocyclic amine of cytidine. Residues a...