Set cover greedy algorithm is one of the commonly used algorithms for the test set problem. It is an open problem if the approximation ratio 2ln n+1 directly derived from the set cover problem can be improved.

集合覆蓋貪心算法是測(cè)試集問題的一個(gè)常用近似算法久久久久久久精品国产免，其由集合覆蓋問題得到的近似比21nn+1能否改進(jìn)是一個(gè)公開的問題人人澡人人看人人摸。

The difference update operation returns a set whose elements are members of the original set after removing elements that are members of the other set.

差更新操作返回一個(gè)集合人人收人人看人人摸人人操，該集合中的成員是去除掉另一集合中元素后的結(jié)果集亚洲天堂在线综合。

According to mapping relationship between information set and discrete point set, every user was entitled to access an information sub-set. Therefore, a correspondent template was activated, and it was used to encapsulate manufacturing information for the users.

根據(jù)信息集與離散點(diǎn)集之間的映射關(guān)系，從用戶的權(quán)限區(qū)域映射出用戶有權(quán)限的信息子集，被該子集激活的制造信息模板的實(shí)例將最終用于制造信息的共享国产理论视频。

In this paper,a necessary condition that a cut vertex belongs to every γ s set of G is discussed,and a necessary and sufficient condition of existing indepedent set dominating set in G is given.

本文討論了割點(diǎn)屬于G的任一最小集控制集的必要條件情欲综合，并且給出了G有獨(dú)立集控制集的充要條件www.免费视频com。

1 Equipment of powder materials treatment: Reduction furnace for metal powder( including push rod type, steel strip type and net strip type), device of ammonia decomposing (dew point or flux feedback control type), rotary motion double cone vacuum dryer, whole set of equipment of high pressure water atomizer, whole set of gas atomizer, whole set of equipment of vacuum gas atomizer( vacuum immediate frequency induction melting furnace included), rotary motion calcine kilnpatent awarded

粉體材料處理設(shè)備：金屬粉末還原爐（推桿式超碰免费在线91、鋼帶式、網(wǎng)帶式），氨分解發(fā)生器（可選配露點(diǎn)、流量反饋控制型）女同饮尿一区二区三区，回轉(zhuǎn)雙圓錐真空干燥器欧美资源自慰，成套高壓水霧化設(shè)備，成套氣霧化設(shè)備国产又粗又长又大又色，成套真空霧化設(shè)備（含真空中頻熔煉爐2020国内偷拍，實(shí)現(xiàn)爐溫反饋控制），回轉(zhuǎn)鍛燒爐狼友日韩三级。

In this thesis, we defined duality Fuzzy relation in a pointwise Fuzzy set by a set of duality Fuzzy point. Then we defined Fuzzy congruence and Fuzzy rough set in Fuzzy semigroups.

本文把二維模糊點(diǎn)作成的集合定義為一個(gè)點(diǎn)態(tài)化模糊集上的模糊二元關(guān)系久久性网，進(jìn)一步定義模糊同余關(guān)系，并通過它又定義點(diǎn)態(tài)化模糊集上模糊粗糙子集欧美精品亚洲精品日韩传电影，并研究了它們的一些性質(zhì)老女人性生活视频。

Introducing a neighborhood relation to set valued information systems,we established a rough set approach based on the neighborhood of every object as elementary set.

在集值信息系統(tǒng)上引入對(duì)象的鄰域關(guān)系，并以每個(gè)對(duì)象的鄰域作為基本集天堂av.com，建立了集值信息系統(tǒng)的粗糙集方法欧美视频a。

As a result, the concept of an optimal set of elementary siphons is proposed and also the algorithm which can be finished in polynomial time to find such a set. With the set of optimal elementary siphons, net supervisors can generally produce maximalreachable states.

但是上述理論雖然只需要控制基本信標(biāo)即可以控制整個(gè)系統(tǒng)，但是由于從屬信標(biāo)滿足一定的可控性條件才能完全受控91黄色视频在线免费在线观看，這意味著在控制算法的生成過程中所有的信標(biāo)都要參與欧美艹艹爱，從而大大增加了系統(tǒng)控制的復(fù)雜性。

Based on rough set theory, research in this paper mainly focuses on mining rules from decision system.Based on the research of the basic concepts of rough set, we deeply analysis and discuss the approximation set algorithm, equivalence class algorithm, core algorithm, attribute reduction algorithm, rules extract algorithm etc.

本文首先對(duì)數(shù)據(jù)挖掘和知識(shí)發(fā)現(xiàn)作一概述熟女熟妇伦aⅴ网站美利坚，并論述了粗糙集理論的重要概念及其度量18岁以下禁止观看一级毛片，基于這些概念和度量，具體分析了粗糙集理論的近似集算法jizzjizz小视频、核算法99久久久久久亚洲精品不卡、屬性約簡(jiǎn)算法、規(guī)則提取算法女人高潮奶水喷出的视频，給出了它們的算法分析以及具體實(shí)現(xiàn)步驟欧美操屄视频网。

The article uses the fuzzy method to set up an evaluation index system of accountor,the evaluation factor set and weight set of it.

應(yīng)用模糊數(shù)學(xué)的方法，通過確立會(huì)計(jì)人員綜合素質(zhì)的評(píng)價(jià)指標(biāo)亚洲欧美自拍日韩精品，建立了指標(biāo)體系的模糊評(píng)價(jià)因素集和權(quán)重集影音先锋性资源免费。