dijkstra s single source shortest path graph algorithm

... thẳng s1 s2 không cắt so s nh x đường thẳng quét vò trí x cắt hai đoạn thẳng s2 s1 – Nếu s1 s2 so s nh x giao điểm s1 với đường thẳng quét cao giao điểm s2 với đường thẳng quét đó, ta nói s1 s2 , ... (sweep-line status): Các thao tác lên T: ° INSERT(T, s) : chèn đoạn thẳng s vào T ° DELETE(T, s) : xoá đoạn thẳng s khỏi T ° ABOVE(T, s) : trả đoạn thẳng s T ° BELOW(T, s) : trả đoạn thẳng s T 13.11.2004 ... INSERT(T, s) if (ABOVE(T, s) tồn cắt s) hay (BELOW(T, s) tồn cắt s) then return TRUE if p điểm đầu mút bên phải đoạn thẳng s then if hai ABOVE(T, s) BELOW(T, s) tồn ABOVE(T, s) cắt BELOW(T, s) ...

Ngày tải lên: 19/10/2014, 00:42

... devices form separate Subsystems A /-= Subsystem connected to \ source Reliability assessment algorithm Based on the above description, the EDN reliability assessment algorithm is as follows I ... healthy state If the shortest path from node A to the source is PathA, PathA can be described by an ordered node series Assuming that the source node is C and S represents the set of all nodes in ... has occurred, it is necessary to search for the switching components that must operate (i.e circuit breakers, reclosers, disconnect/sectionalising switches, tie switches etc) Nodes are Classified...

Ngày tải lên: 03/01/2014, 19:39

... the source node, s, which has cost Step First we choose the node, which is closest to the source node, s We initialize d [s] to Add it to S Relax all nodes adjacent to source, s Update predecessor ... negative-weight edges Now we give a simple example to show that Dijkstra' s algorithm produces incorrect results in this situation Consider the digraph consists of V = {s, a, b} and E = { (s, a), (s, b), (b, ... below) Step Now, node y is the closest node, so add it to S Relax node v and adjust its predecessor (red arrows remember!) Step Now we have node u that is closest Choose this node and adjust its neighbor...

Ngày tải lên: 24/12/2014, 05:31

... items")) else if (str.equals("toclose")) else if (str.equals("done")) else if (str.equals("locked")) else if (str.equals("maxnodes")) else if (str.equals("none")) else if (str.equals("some")) else ... (str.equals("the startnode")) else if (str.equals("draw arrows")) else if (str.equals("change weights")) else if (str.equals("remove arrows")) else if (str.equals("clear / reset")) else if (str.equals("run ... else setText(str); } } Class dialog: setText(drawnodes); setText(rmvnodes); setText(mvnodes); setText(startnode); setText(drawarrows); setText(weight); setText(rmvarrows); setText(clrreset); setText(runalg);...

Ngày tải lên: 18/03/2015, 17:56

... thuật toán Dijkstra Ứng dụng thuật toán Dijkstra Shortest Path Routing Hình Thuật toán Dijkstra biểu diễn SPF tree 1.3.b.Metric của OSPF: OSPF đề cập đến metric là cost Cost của toàn ... autonomous system boundary router (ASBR) Chỉ một lần sau tất cả các OSPF router đồng bộ được link state database, mỗi router sẽ tính toán SPF tree cho mỗi đích mà nó biết S ̣ tính ... Ứng dụng thuật toán Dijkstra Shortest Path Routing Mỗi router gửi các link state advertisement (LSA) qua tất cả adjacency LSA mô tả tất cả các interface của router...

Ngày tải lên: 25/10/2013, 03:20

... 192.168.40.0/24, successors, FD is 21469856 Via Connected, Serial0 (略) 注意前面的 P 代表 passive 状态,这样的状态是正常的如果看见的是 A 即 active 状态而不是 P,说明 router 失去了到这个网络的路径并且在寻找替代路径 Open Shortest Path First(OSPF) Basics 在 个大型网络中,假如不是所有的设备都是 ... 于区域 中.OSPF 运行在 个 AS 中,而且能够连接多个 AS,连接多个 AS 的 router 为自治系 统边界 router(autonomous system boundary router,ASBR) OSPF Terminology 来看一些 OSPF 的术语: 1.link:网络或分配给网络的 router 的接口.当接口被加到 OSPF 的进程中以后,OSPF 把它认为 ... 1563.可以使用 ip ospf cost 命令来修改耗费,值的范围是 到 65535 Configuring OSPF 在 CCNA 的认证课程里,我们只讨论单域 (single area)的 OSPF 配置.配置 OSPF 的 个要素: 1.启用 OSPF 2.配置 OSPF 的区域 Enabling OSPF 启用 OSPF 在全局配置模式下使用 router ospf [进程 ID]命令,进程...

Ngày tải lên: 21/12/2013, 05:17

... block AS External LSA mà block tất c Summary LSA trừ LSA loại để quảng bá default route c/ Not-So-Stubby Area Not-so-stubby areas(NSSA): cho phép external route quảng bá vào OSPF autonomous system ... Cụ thể sau: 3.5 Một s loại Area OSPF (OSPF Area Types) a/ Stub Area Một stub area area mà External LSA không flood vào area Trong stub area LSA loại hay LSA bị block ABR cạnh stub area s dụng ... stub area Cụ thể ASBR NSSA sinh LSA loại để quảng bá external destination Những External LSA flood khắp NSSA area chúng bị block ABR Tóm lại ta có bảng tổng kết sau: Định dạng gói tin OSPF OSPF...

Ngày tải lên: 22/12/2013, 16:15

... ng i ngn nht (OSPF-open Shortest First) 18 VII Tỡm hiu v thut toỏn Dijkstra v thut toỏn A* 21 Sinh Viờn : Nguyn Th Ngha Widest Shortest Path GVHD: Hong Trng Minh Thut toỏn Dijkstra 21 Thut toỏn ... tuyn trng thỏi s dng cỏc gii thut Shortest Path First (SPF) cựng vi mt c s d liu phc v cu Sinh Viờn : Nguyn Th Ngha 20 Widest Shortest Path GVHD: Hong Trng Minh hỡnh ca mng C s d liu v cu hỡnh ... nh sn, v khụng cú chia s cỏc liờn kt vi cỏc ng dn khỏc VI Giao thc ng i ngn nht (OSPF-open Shortest First) Sinh Viờn : Nguyn Th Ngha 19 Widest Shortest Path GVHD: Hong Trng Minh Giao thc OSPF...

Ngày tải lên: 22/01/2014, 19:20

... and Indicators will be used to assess the State 's success in achieving its Urban and Community Development goals and objectives • Number of assessed rivers, streams and reservoirs designated for ... Measures and Indicators The following Management Measures and Indicators will be used to assess the State 's success in achieving its Forest Practices goals and objectives Responsible agencies ... recommends best design practices for coastal harbor design Best Management Practices The web address for this manual is: http://www.dot.state.ak.us/stwddes/desports/resources.shtml The Alaska Sea...

Ngày tải lên: 15/03/2014, 16:20

... every subpath of a shortest path is itself a shortest path between its two ends This is sometimes referred to as the “principle of dynamic programming.” 14 Paths in Graphs and when the edge is examined ... v, is of a nonnegative length Thus, δ(v) δ(w) • Since every subpath of a shortest path is shortest from its start-vertex to its end-vertex, the subpath of P from s to w is shortest, and its length ... paths from u to v, and is infinite if no such path exists In most algorithms described in this section, the scenario is as follows: We assume that there is a designated vertex s ∈ V, called the source...

Ngày tải lên: 22/03/2014, 17:20

... Traps… So, Is the Syngress Server Hosted? In the preceding Syngress example, our suspicions prove unfounded, as an examination of the WHOIS records clearly shows: % host www.syngress.com www.syngress.com ... in Houston, Texas He has provided services to clients with penetration testing, vulnerability assessment, risk assessments, and security design/architecture for enterprise networks He has over ... into IP addresses and IP address ranges With the previous two subphases, we use DNS as a means of determining ownership and end up with a list of IP addresses and IP ranges In this phase, we commence...

Ngày tải lên: 25/03/2014, 11:56

... Authors Aaron W Bayles is a senior security consultant with Sentigy, Inc of Houston,TX He provides service to Sentigy s clients with penetration testing, vulnerability assessment, and risk assessments ... these days, Chris also has extensive experience performing vulnerability assessments, forensics, and incident response Chris has spoken at several security conferences and published numerous whitepapers ... To mine as many DNS host names as possible from the domains collected and translate those into IP addresses and IP address ranges The output of this phase is a list of DNS host names (forward...

Ngày tải lên: 25/03/2014, 11:57

... hình vùng Stub, Totally stubby, NSSA Cấu hình liên kết ảo OSPF 2.6 SO S NH OSPF VÀ CÁC GIAO THỨC KHÁC   So s nh hội tụ So s nh mở rộng CHƯƠNG III: TRIỂN KHAI OPEN SHORTEST PATH FIRST (OSPF) ĐA ... Autonomous System Boundary Router ( ASBR) Các loại thông điệp LSA :  Router Link LSA : Bản tin LSA loại  Network Link (NLA) : LSA loại  Network Summary Link (NSL) : LSA loại  Autonomous System ... THỐNG OSPF (OPEN SHORTEST PATH FIRST) ĐƠN VÙNG CỦA CÔNG TY Hệ thống mạng OSPF (Open shortest path first) đơn vùng công ty định tuyến theo phương pháp trạng thái liên kết (link-state), so với...

Ngày tải lên: 23/04/2014, 20:23

... by message passing between the nodes 1.5 Design Issues Design issues and challenges in a distributed system may be broadly classified as in the area of system software and the distributed algorithms ... advantages of using a distributed system is resource sharing Access to a central resource has two disadvantages as this central site becomes a bottleneck for communications and also is a single point ... distributed system communicate by messages only Messages are communicated in rounds in synchronous message passing, where messages sent in round k are delivered to all recipients before messages...

Ngày tải lên: 24/04/2014, 15:04

... prospective studies on SBBC members demonstrated that the cohort now consists of subjects with slow disease progression (SP), as well as individuals who remain true long-term nonprogressors (LTNP) and ... Similar results were obtained in two independent experiments in the study subjects was neither necessary nor sufficient for disease progression Sequence analysis The preceding studies showed differences ... studies, DNA sequencing and sequence analysis, and the GeneScan analyses; JS, MJC and KW carried out the HTA studies; ALC assisted with the HTA studies; MJC and JS assisted with the DNA sequencing;...

Ngày tải lên: 18/06/2014, 18:20

... Supervisors Alcorn County, Mississippi We have audited the primary government financial statements of Alcorn County, Mississippi, as of and for the year ended September 30, 1996, and have issued ... procedures prescribed by the State Auditor, and accordingly, included such tests of the accounting records and such other auditing procedures as we considered necessary in the circumstances As required ... procedures were substantially less in scope than an audit, the objective of which is the expression of an opinion on the county 's compliance with these requirements Accordingly, we not express such an...

Ngày tải lên: 20/06/2014, 02:20

... going from ˜ state s to state s as cr (s, s ) For every system state s, action r ∈ A (s) and system state s such that pr (s, s ) > ˜ 0, we assume that cr (s, s ) = This represents the fact that ... for every admissible policy, it is easy to show that the system process {S( t)}∞ is also a Markov Chain, t=0 with state space S given by (2) The Markovianness of the system process is shown and verified ... considering admissible policies in the class Π A Stochastic shortest path formulation Since the wireless channel process {G(t)}∞ is Markov t=0 and since the process of the queue sizes evolves according...

Ngày tải lên: 20/06/2014, 22:20

... TEM micrographs of SnS NCs, synthesized from the single source precursor at various conditions are shown in Fig The SnS NCs synthesized by this solvothermal procedure were polydisperse in size A ... heavy metals with dithiocarbamates and Fig Bis(diethyldithiocarbamato)tin(II) used as a precursor for SnS NCs synthesis 123 146 non-phosphine containing solvents are used As it was indicated ... samples This procedure is similar to others published by O‘Brian et al [22, 23] for the synthesis of high quality semiconductor NCs (CdS, ZnS), where less toxic single- molecule organic complexes...

Ngày tải lên: 22/06/2014, 22:20

... TEM micrographs of SnS NCs, synthesized from the single source precursor at various conditions are shown in Fig The SnS NCs synthesized by this solvothermal procedure were polydisperse in size A ... heavy metals with dithiocarbamates and Fig Bis(diethyldithiocarbamato)tin(II) used as a precursor for SnS NCs synthesis 123 146 non-phosphine containing solvents are used As it was indicated ... samples This procedure is similar to others published by O‘Brian et al [22, 23] for the synthesis of high quality semiconductor NCs (CdS, ZnS), where less toxic single- molecule organic complexes...

Ngày tải lên: 22/06/2014, 22:20