Permutation codes are vector quantizers whose codewords are related by permutations and, in one variant, sign changes. Asymptotically, as the vector dimension grows, optimal Variant I permutation code design is identical to optimal entropy-constrained scalar quantizer (ECSQ) design. However, contradicting intuition and previously published assertions, there are finite block length permutation c...

Generics allow programmers to design algorithms and data structures that operate in the same way regardless of the data used by abstracting over data types. Generics are useful as they improve the programmer’s productivity by raising the level of abstraction, which in turn leads to reducing code duplication and uniform interfaces. However, as data on the low-level comes in different shapes and ...

7 Abstract. Legal codes, such as the Uniform Commercial Code (UCC) examined in this article, are 8 good points of entry for AI and ontology work because of their more straightforward adaptability 9 to relationship linking and rules-based encoding. However, approaches relying on encoding solely 10 on formal code structure are incomplete, missing the rich experience of practitioner expertise that...

in this article, by using chebyshev’s polynomials and chebyshev’s expansion, we obtain the best uniform polynomial approximation out of p2n to a class of rational functions of the form (ax2+c)-1 on any non symmetric interval [d,e]. using the obtained approximation, we provide the best uniform polynomial approximation to a class of rational functions of the form (ax2+bx+c)-1 for both cases b2-4a...

The branch of coding theory that is based on formal languages has produced several methods for defining code properties, including word relations, dependence systems, implicational conditions, trajectories, and language inequations. Of those, the latter three can be viewed as formal methods in the sense that a certain formal expression can be used to denote a code property. Here we present a fo...

Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document describes a Uniform Resource Name (URN) namespace (RFC 3406) for the assignment of the Common Language Equipment Identifier (CLEI) code, which is used in messages standardized by ANSI. The URN namespac...

The goal of the flutter shutter is to make uniform motion blur invertible, by a “fluttering” shutter that opens and closes on a sequence of well chosen sub-intervals of the exposure time interval. In other words, the photon flux is modulated according to a well chosen sequence called flutter shutter code. This article provides a numerical method that computes optimal flutter shutter codes in te...

Code generation for embedded programmable processors is becoming increasingly important. Many of these processors have irregular architectures and offer instruction-level parallelism (e.g. DSPs). In order to generate code for a wide range of architectures, a code generator should be retargetable. Most of the previous code generation approaches concentrate on the datapath, not taking the peculia...

Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document describes a Uniform Resource Name (URN) namespace (RFC 3406) for the assignment of the Common Language Equipment Identifier (CLEI) code, which is used in messages standardized by ANSI. The URN namespac...

A3-code has a dishonest arbiter who may disturb the communication compared with A2-code, and the arbiter also has some secret key information used to arbitrate in the case of dispute between the senders and receivers. This paper firstly introduces the model of A3-code and the seven types of possible cheating attacks as well as their computational formula. And then a construction of A3-code is p...