This work develops a method, called network component analysis, for uncovering hidden regulatory signals from outputs of networked systems, when only a partial knowledge of the underlying network topology is available.Expand

A constructive proof of the existence of mutually biased bases for dimensions that are powers of primes is presented and it is proved that in any dimension d the number of mutually unbiased bases is at most d+1.Expand

Simulation results for larger-sized problems showed that this genetic-algorithm-based approach outperformed two nonevolutionary heuristics and a random search.Expand

A novel independent component analysis algorithm, which is truly blind to the particular underlying distribution of the mixed signals, is introduced, which consistently outperformed all state-of-the-art ICA methods and demonstrated the following properties.Expand

It is shown that $2n$ random classical bits are both necessary and sufficient for encrypting any unknown state of n quantum bits in an informationally secure manner and a connection is made between quantum encryption and quantum teleportation that allows for a different proof of optimality of teleportation.Expand

The utility of network component analysis in determining multiple transcription factor activities based on transcriptome profiles and available connectivity information regarding network connectivity is demonstrated.Expand

An automated antispam tool exploits the properties of social networks to distinguish between unsolicited commercial e-mail - spam - and messages associated with people the user knows.Expand

Algorithms for maximum likelihood estimation of Gaussian graphical models with conditional independence constraints and efficient implementations of Newton's method and the conjugate gradient method are described, by embedding the graph in a chordal graph.Expand

The dynamics reported in this paper can be used to craft protocols for designing highly dynamic peer-to-peer networks and also to account for the power-law exponents observed in existing popular services.Expand