نتایج جستجو برای: heuristic

تعداد نتایج: 56366  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم ریاضی و مهندسی کامپیوتر 1392

heuristics are often used to provide solutions for flow shop scheduling problems.the performance of a heuristic is usually judged by comparing solutions and run times on test cases.this investigation proposes an analytical alternative ,called asymptotic convergence ,which tests the convergence of the heuristic to a lower bound as problem size grows. the test is a stronger variation of worst cas...

Journal: :journal of computer and robotics 0
ali jahanian it & computer engineering dept, amirkabir university of tech morteza saheb zamani it & computer engineering dept, amirkabir university of tech esmaeil khorram it & computer engineering dept, amirkabir university of tech

in recent years, size of vlsi circuits is dramatically grown and layout generation of current circuits has become a dominant task in design flow. standard cell placement is an effective stage of physical design and quality of placement affects directly on the performance, power consumption and signal immunity of design. placement can be performed analytically or heuristically. analytical placer...

Journal: :Journal of the Operational Research Society 2011

Journal: :روش های عددی در مهندسی (استقلال) 0
فریماه مخاطب رفیعی و محمد معطر حسینی f. mokhatab-rafiei and m. moattar hosaini

this paper considers the economic lot scheduling problem, that is, the problem of scheduling several products on a single facility so as to minimize holding and setup costs. combination of frequency and timing as well as production quantity make this problem np-hard. a heuristic is developed to obtain a good solution to elsp. the proposed heuristic makes use of the simulated annealing technique...

Journal: :The Computer Journal 1971

Journal: :international journal of pediatrics 0
amir jamshidnezhad department of health information technology, faculty of allied health sciences, ahvaz jundishapur university of medical sciences, ahvaz, iran. ahmad azizi department of health information technology, faculty of allied health sciences, ahvaz jundishapur university of medical sciences, ahvaz, iran. saeed shirali department of laboratory sciences, faculty of allied health sciences, ahvaz jundishapur university of medical sciences, ahvaz, iran. sara rekabeslamizadeh department of health information technology, faculty of allied health sciences, ahvaz jundishapur university of medical sciences, ahvaz, iran. maryam haddadzadeh faculty of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran. yalda sabaghan ahvaz imam educational hospital, ahvaz, iran.

background: acute appendicitis is one of the common and urgent illnesses among children.  children usually are unable to help the physicians completely due to weakness in describing the medical history. moreover, acute appendicitis overlaps with conditions of other diseases in terms of symptoms and signs in the first hours of presentation. these conditions lead to unwanted biases as well as err...

Journal: :Journal of Artificial Intelligence Research 2007

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