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3 edition of Detection of global state predicates found in the catalog.

Detection of global state predicates

Detection of global state predicates

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Published by Dept. of Computer Science, Cornell University, National Aeronautics and Space Administration, National Technical Information Service, distributor in Ithaca, N.Y, [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Predicate (Logic),
  • Electronic data processing -- Distributed processing.

  • Edition Notes

    StatementKeith Marzullo, Gil Neiger.
    SeriesNASA contractor report -- NASA CR-189499.
    ContributionsNeiger, Gil., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15374039M

    Robust Fault Detection Based on State Observers for Networked Control Systems: /ch With the development of network and control technology, networked control systems (NCS) have been widely studied recently, especially in the area of complexAuthor: Zhang-qing Zhu, Chunlin Chen. The likely range of the human contribution to the global mean temperature increase over the period – is ° to °F (° to °C), and the central estimate of the observed warming of °F (°C) lies within this range (high confidence).This translates to a likely human contribution of 93%–% of the observed – change.

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Detection of global state predicates Download PDF EPUB FB2

Global predicate detection, which is an important problem in testing and debugging distributed programs, is very hard due to the combinatorial explosion of the global state space.

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Global State Finite State Automaton Asynchronous System Synchronous System Vector Clock These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm by: Addeddate Documentid Identifier nasa_techdoc_ Identifier-ark ark://t39z9wq71 Ocr ABBYY FineReader Ppi.

An architectural framework for detecting global predicates in dynamic systems has been formulated that consists of two basic components. One copes with the information collection and predicate evaluation over consistent global states. Detection of global predicates: Techniques and their limitations.

Earlier algorithms for detection of global predicates proposed by Chandy and Lamport work only for stable predicates. A predicate is stable if it does not turn false once it becomes : Scott Stoller.

text of an abstract problem called Global Predicate Evaluation (GPE). The goal of GPE is to determine whether the global state of the system satis-fies some predicate. Global predicates are constructed so as to encode system properties of interest in terms of state variables.

Examples of dis-Cited by: The detection of distributed predicates has several applications, including the following: • Detection of when a distributed application reaches some stable state: This includes conditions that once become true they will not turn false anymore.

For example, deadlock detection and loss of token in a token by: 2. BibTeX @INPROCEEDINGS{Marzullo91detectionof, author = {Keith Marzullo and Keith Marzullo and Gil Neiger and Gil Neiger}, title = {Detection of Global State Predicates}, booktitle = {In Proc.

5th Int'l. Workshop on Distributed Algorithms (WDAG '91}, year = {}, pages = {}, publisher = {Springer-Verlag}}. GLOBAL DETECTION SYSTEMS N. BLANCO LOCKHART,TX KEN PRICE - PRESIDENT. Click to Access The Contact Form. Stable predicates are distinguished by the fact that once they are true in some consistent global state, they remain true indefinitely.

We present a protocol for the detection of stable predicates within dynamic systems (in which process membership may not be static).Cited by: 1. These predicates may depend on the global state of the system and may be unstable in nature.

However, the detection algorithms given guarantee to detect such predicates should one ever become true. The main results of this work are a logic for expressing unstable distributed predicates and detection methods for certain unstable distributed.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): AbstractÐGlobal predicate detection, which is an important problem in testing and debugging distributed programs, is very hard due to the combinatorial explosion of the global state space.

This paper presents several techniques to tackle the state explosion problem in detecting whether an arbitrary predicate is true. The class of linear predicates is fairly broad. For example, classic problems such as detection of termination and computation of global virtual time are instances of conjunctions of linear channel predicates.

Linear predicates can be functions of the number of messages in the channel, or can be based upon the actual contents of the by: 7. Keywords: global predicate detection, consistent global states, partially-synchronous systems, distributed debugging, real-time monitoring 1 Introduction A history of a distributed system can be modeled as a sequence of events in their order of : Scott Stoller.

Object detection, tracking and recognition in images are key problems in computer vision. This book provides the reader with a balanced treatment between the theory and practice of selected methods in these areas to make the book accessible to a range of researchers, engineers, developers and postgraduate students working in computer vision and related by: The lattice of global states is used as a basis to define and to detect global predicates, including predicates with modal and temporal clauses.

The global predicate detection technique is used to detect violations of correctness and safety conditions in a distributed control : J. Vila, F. Buendia. We study the problem of global predicate detection in presence of permanent and transient failures.

We term the transient failures as small faults. We show that it is impossible to detect predicates in an asynchronous distributed system prone to small faults even if nodes are equipped with a powerful device known as failure detector sequencer Author: Felix C.

Freiling and Arshad Jhumka. Global Predicate Detection and Event Ordering. Our Problem To compute predicates over the state of a global predicate (say, deadlock) holds.

Draw arrow from to if has received a The global state saved by the snapshot. Early detection is essential to the control of emerging, reemerging, and novel infectious diseases, whether naturally occurring or intentionally introduced. Containing the spread of such diseases in a profoundly interconnected world requires active vigilance for signs of an outbreak, rapid recognition of its presence, and diagnosis of its microbial cause, in addition to strategies and.One can define subclasses of predicates such as stable predicates, linear predicates, and observer-independent predicates for efficient detection under special cases.

These results are shown in C. M. Chase, V. K. Garg, Efficient Detection of Global Predicates in a Distributed System, Distributed Computing, Vol.

11, No. 4,pp. -- PREDICATE LOGIC “Interpretations” for expressions of predicate logic are possible meanings for the predicates and variables (Section ). They are analogous to truth as-signments in propositional logic. Tautologies of predicate logic are expressions that are true for all Size: KB.