Social networks and discovery in the enterprise (SaND)
Inbal Ronen, Elad Shahar, et al.
SIGIR 2009
An input-constrained channel is defined as the set S of finite sequences generated by a finite labeled directed graph which defines the channel. A construction based on a result of Adler, Goodwyn, and Weiss is presented for finite-state encoders for input-constrained channels. Let G = (V, E) denote a smallest deterministic presentation of S. For a given input-constrained channel S and for any rate p : q up to the capacity c(S) of S, the construction provides finite-state encoders of fixed-rate p : q that can be implemented in hardware with a number of gates which is at most polynomially large in |V|. When p/q < c(S), the encoders have order ≤ 12|V|, namely, they can be decoded by looking ahead at up to 12|V| symbols, thus improving slightly on the order of previously known constructions. A stronger result holds when p/q ≤ c(S) − ((log2 e)/(2p q)) and S is of finite memory, where the encoders can be decoded by a sliding-block decoder with look-ahead ≤ 2|V| + 1. © 1995 IEEE.
Inbal Ronen, Elad Shahar, et al.
SIGIR 2009
Yvonne Anne Pignolet, Stefan Schmid, et al.
Discrete Mathematics and Theoretical Computer Science
Khalid Abdulla, Andrew Wirth, et al.
ICIAfS 2014
Ruixiong Tian, Zhe Xiang, et al.
Qinghua Daxue Xuebao/Journal of Tsinghua University