Closure under stuttering in temporal formulas

  • 0.24 MB
  • 3438 Downloads
  • English
by
National Library of Canada , Ottawa
SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative. --
ID Numbers
Open LibraryOL21612691M
ISBN 100612462080
OCLC/WorldCa47690280

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Linear time temporal logic (LTL) has received a lot of attention as a language for program specification and verification. Unfortunately, not all properties expressed in LTL are closed under stuttering, a property important from both the practical and philosophical perspectives.

However, this aspect does not influence the satisfaction of the LTL formula, because of a specific property of LTL -X, namely closure under stuttering (Lamport, ; Paun & Chechik, ). This. Linear-time temporal logic (LTL) is a formalism that has been used extensively by researchers for program specification and verification.

One of the desired properties of LTL formulas is closure under stuttering. That is, we do not want the interpretation of formulas to change over traces where some states are by: Closure Under Stuttering in Temporal Closure under stuttering in temporal formulas book.

By Dimitrie Octavian Paun. Abstract. Linear time temporal logic (LTL) has received a lot of attention as a language for program specification and verification.

Unfortunately, not all properties expressed in LTL are closed under stuttering, a property important from both the practical and Author: Dimitrie Octavian Paun.

Further, determining whether a given LTL property is closed under stuttering is PSPACE-complete. In this paper, we introduce a notion of edges of LTL formulas and present a formal theory of. A simple and elegant formulation of compositional proof systems for concurrent programs results from a refinement of temporal logic semantics.

The refined temporal language we propose is closed under w- stuttering and, thus, provides a fully abstract semantics with. Use of the next-time operator of propositional linear temporal logic (PLTL, see [10]) can lead to a violation of invariance under stuttering.

Consider, for instance, the property "next P", often written "XP", which defines the set of all computations in which the second position satisfies P. Dimitrie O. P-aun. Closure under stuttering in temporal formulas. Master’s thesis, Department of Computer Science, University of Closure under stuttering in temporal formulas book, Toronto, Ontario M5S 3G4, CANADA, April.

Google Scholar. utilized under the supervision and direction of a licensed and certified SLP. • Talking about the experience of stuttering with an SLP can aid in being reassured that feelings surrounding stuttering are typical, expected, and can be challenging.

Paradoxically, DAF can improve fluency in people who stutter (it decreases fluency in control subjects). Some stutterers also have an anatomically atypical planum temporale. A study published in Neurology by Foundas et al.

() sought to determine whether there was a relation between the paradoxical DAF effect and planum temporale anatomy. THE APPEARANCE, "reappearance," and disappearance of stuttering speech in association with brain injury are rare and poorly understood.

Stuttering has been described as a symptom of stroke in both the dominant and nondominant 2,5, hemispheres, and in all lobes except the occipital. We describe 4 cases of stuttering acquired in association with stroke.

Hence, checking the closure of a specification is no more difficult than checking satisfiability of a temporal formula. Among the closure properties we are able to handle, one finds trace closedness, stutter closedness and projective closedness, for all of which we are also able to prove a PSPACE lower bound.

The Algorithm Given P and N, let N' be the closure of N under stuttering. Our algorithm is summarized in the figure below. Instead of using N, SPIN uses N' and computes its intersection with P.

Since the automaton N' is known to be closed under stuttering, this can be done using partial-order reductions. The refined temporal language we propose is closed under w- stuttering and, thus, provides a fully abstract semantics with respect to some chosen observation level w.

This avoids incorporating irrelevant detail in the temporal semantics of parallel programs. Invariance Under Stuttering in Branching-Time Temporal Logic Ron Gross Technion - Computer Science Department - Thesis MSC - A temporal formula or speciflcation is stutter-invariant if it does not distinguish between stutter-equivalent struc-tures.

Preschool-Age Stuttering ( Years) In preschool (ages ), therapy is usually most often about changing the environment around the child who stutters so their brain can figure out to get them more fluent on their own, instead of making a very young child master intricate speech techniques (this is also called indirect therapy).

For more about dopamine, see Wikipedia article Dopamine or the book The Edge Effect, by Eric Braverman (ISBN ). Tourette's and Stuttering. Three genes that correlate with stuttering also correlate with Tourette's Syndrome (see the chapter Genetics of Stuttering).

Tourette's and stuttering have many commonalities, suggesting that the. † Invariance under stuttering. † Temporal existential quantiflcation. † Taking as atomic formulas not just state predicates but also action for-mulas.

Here is what prompted these additions. When Pnueli flrst introduced temporal logic to computer science in the s, it was clear to me that it provided the right logic for expressing the.

Linear temporal property is a temporal logic formula that describes a set of infinite sequences for which it is true Purpose Translate the properties which are written using the natural languages into LTL by using special syntax. By given the TS and LTL formula φ, we can check if φ hold in TS or not.

here is given in [AS85], it coincides with the de nition of limit closure de ned in [Eme83], and is di erent from the de nition in [Lam85], which also refers to the property being closed under stuttering.

Linear properties of nonterminating systems are often speci ed using Buc hi automata on in nite words or linear temporal logic (LTL) formulas. Determining if an arbitrary LTL formula is closed under stuttering is hard-it has been proven to be PSPACE-complete. We relax the restriction on LTL that guarantees closure under stuttering, introduce the notion of edges in the context of LTL, and provide theorems that enable syntactic reasoning about closure under stuttering of LTL formulas.

The X operator asserts the truth of the sub-formula that follows it for the next system state that is reached. The use of this operator can void the validity of the partial order reduction algorithm that is used in Spin.

Details Closure under stuttering in temporal formulas EPUB

To show that this is not the case requires a proof that the property that is specified is closed under stuttering. By Soo-Eun Chang, Ph.D. Aug From the Dana Foundation. Editor’s note: After many decades of attributing stuttering to causes ranging from childhood trauma to overly anxious personalities, scientists have used neuroimaging techniques to uncover measurable differences in the brain activity of people who stutter versus fluent speakers.

The actual characterization is done in two steps. First we discuss how stuttering equivalence can be characterized as a temporal logic formula. Observational determinism is then expressed in terms of the stuttering equivalence characterization. This results in a conjunction of n LTL and a CTL formula, that are amenable to model checking.

Selected Temporal, Grammatical, and Phonological Characteristics of Conversational Utterances Produced by Children Who Stutter Kenneth J. Logan and Edward G.

Download Closure under stuttering in temporal formulas EPUB

Conture Journal of Speech, Language, and Hearing Research () 1 Feb Books at Amazon. The Books homepage helps you explore Earth's Biggest Bookstore without ever leaving the comfort of your couch. Here you'll find current best sellers in books, new releases in books, deals in books, Kindle eBooks, Audible audiobooks, and so much more.

For any temporal formula F and variable v, the formula ∃∃∃∃∃∃v:F is defined approximatelyasfollows. A behaviorσ satisfies ∃∃∃v:F iffthere existsabehavior τ satisfying F such that τ is identical to σ except for the values its states assign to v.

The precise definition is more complicated because a temporal formula. acute form of stuttering speech, which places them under a great economic and social handicap.

Description Closure under stuttering in temporal formulas PDF

This can be corrected if given the proper training. (Martin) 2There are no quick or magical answers to your stuttering. (Barbara) 3This book has been translated into 12 foreign languages: German, French, Spanish, Japanese, Lithuanian, Finnish.

Closure Properties Büchi-recognizable languages are closed under • (alphabet) projection and union Same algorithms as Finite Automata • intersection Different construction from Finite Automata • complement i.e., from a Büchi automaton A recognizing L one.

Written by Hillel Wayne. This work is licensed under a Creative Commons Attribution International License. About Ask for Help Github Donate Introduction About This Guide An Example PlusCal Models Concurrency Temporal Properties Techniques Appendix from Grav and Hugo Built with because I can't do websites to save my life Learn TLA+.

The temporal claim makes a formal statement of the possible orders in which propositions on the reachable system states can become true and false during system execution. especially claims that are closed under stuttering, To translate an LTL formula into a never claim, we have to consider first whether the formula expresses a positive.

Using the 1st formula: x 60 = ; ÷ 80 = 87 WPM. The student reading rate appears to be 87 WPM (end of grade level benchmark). However, using the 2nd formula that calculates the correct number of words read, the fluency rate changes dramatically.

95 x .Summary. Lamport's "Temporal Logic of Actions" is a temporal logic that includes actions — i.e. transitions between states. The conventional Tableau technique of Clarke and Emmerson [], used to verify temporal formulas, does not handle actions.

We present the Action Tableau technique, which does handle actions. The technique was partly developed and implemented during a summer .