Partially ordered sets

Part 2 book "Mobius inversion in physics" includes content: Arithmetic fourier transform, inverse lattice problems in low dimensions, inverse lattice problems, mobius inverse formula on a partially ordered set.

140p muasambanhan04 07-01-2024 2 1   Download

Part 2 book "Mobius inversion in physics" includes content: Arithmetic fourier transform, inverse lattice problems in low dimensions, inverse lattice problems, mobius inverse formula on a partially ordered set.

140p muasambanhan03 02-01-2024 4 2   Download

In recent years, many studies focused on the description and comparison of large sets of related bacteriophage genomes. Due to the peculiar mosaic structure of these genomes, few informative approaches for comparing whole genomes exist: dot plots diagrams give a mostly qualitative assessment of the similarity/ dissimilarity between two or more genomes, and clustering techniques are used to classify genomes.

13p vioklahoma2711 19-11-2020 11 2   Download

Let In be the symmetric inverse semigroup, and let PODIn and POIn be its subsemigroups of monotone partial bijections and of isotone partial bijections on Xn = {1, . . . , n} under its natural order, respectively.

9p nutifooddau 21-01-2019 21 2   Download

In this paper the notion of Coxeter length for a subset of a Coxeter group, as introduced in, is investigated for various subsets of a Coxeter group. Mostly cosets of various subgroups are examined as well as the associated idea of X-posets, which is a vast generalization of the Bruhat order.

17p tuongvidanh 06-01-2019 8 2   Download

In this paper, we discussed the effects of discount price on demand and profit in a diminishing market. A production plan has been suggested for an imperfect production system. Here, demand is considered to be price sensitive and negative power function of the selling price. This problem is solved by optimization, using the Hessian matrix of order three. The main objective is to find the optimal excepted average profit, optimal selling price, discount rate, backorder level, and lot-size. The recommendations are provided to offer a price discount for limited sale season on different occasions.

21p danhnguyentuongvi27 19-12-2018 24 1   Download

In this paper we address the problem of choosing the best solution(s) from a set of interpretations of the same object (in our case a segment of text). A notion of preference is stated, based on pairwise comparisons of complete interpretations in order to obtain a partial order among the competing interpretations. An experimental implementation is described, which uses Prolog-like preference statements.

6p buncha_1 08-05-2013 35 2   Download

A new account of parameter setting during grammatical acquisition is presented in terms of Generalized Categorial G r a m m a r embedded in a default inheritance hierarchy, providing a natural partial ordering on the setting of parameters. Experiments show that several experimentally effective learners can be defined in this framework. Ew)lutionary simulations suggest that a lea.rner with default initial settings for parameters will emerge, provided that learning is memory limited and the environment of linguistic adaptation contains an appropriate language. ...

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In previous work, supertag disambiguation has been presented as a robust, partial parsing technique. In this paper we present two approaches: contextual models, which exploit a variety of features in order to improve supertag performance, and class-based models, which assign sets of supertags to words in order to substantially improve accuracy with only a slight increase in ambiguity.

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Attributes are partial: it need not be the case that every attribute is d ef!ned for every complex element. The set of attribute-value structures partially ordered by the subsumption relation (together with all additional entity T that every attribute-value structure subsumes) forms a lattice, and the join operation on this lattice is called the unification operati(m 119]. Example: (from [16]). The attribute-value structure (1) has six complex elements labelled el ... e6 and two corastant elements, singular and third. ...

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This paper presents a new formalization of a unification- or join-preserving encoding of partially ordered sets that more essentially captures what it means for an encoding to preserve joins, generalizing the standard definition in AI research. It then shows that every statically typable ontology in the logic of typed feature structures can be encoded in a data structure of fixed size without the need for resizing or additional union-find operations.

8p bunmoc_1 20-04-2013 45 1   Download

Hand-coded scripts were used in the 1970-80s as knowledge backbones that enabled inference and other NLP tasks requiring deep semantic knowledge. We propose unsupervised induction of similar schemata called narrative event chains from raw newswire text. A narrative event chain is a partially ordered set of events related by a common protagonist. We describe a three step process to learning narrative event chains. The first uses unsupervised distributional methods to learn narrative relations between events sharing coreferring arguments.

9p hongphan_1 15-04-2013 53 1   Download

This book is available at a special discount when ordered in bulk quantities. For information, contact Special Sales Department, AMACOM, a division of American Management Association, 1601 Broadway, New York, NY 10019. This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. It is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional service. If legal advice or other expert assistance is required, the services of a competent professional person should be sought.

294p huetay_1 27-02-2013 55 8   Download

Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học được đăng trên tạp chí toán học quốc tế đề tài: On externally complete subsets and common fixed points in partially ordered sets

8p sting03 04-02-2012 32 3   Download

Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí toán học quốc tế đề tài: The Redheffer matrix of a partially ordered set...

5p thulanh5 13-09-2011 59 1   Download

Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí toán học quốc tế đề tài: On sums over partially ordered sets...

10p thulanh4 10-09-2011 48 2   Download

The dynamics of flexible mechanical systems that require vibration reduction are usually mathematically represented by partial differential equations (PDEs). Specifically, flexible systems are modeled by a PDE that is satisfied over all points within a domain and a set of boundary conditions. These static or dynamic boundary conditions must be satisfied at the points bounding the domain. Traditionally, PDE-based models for flexible systems have been discretized via modal analysis in order to...

15p phuphong 10-12-2009 100 4   Download