نتایج جستجو برای: artificial networks

تعداد نتایج: 656609  

Journal: :journal of computer and robotics 0
hadi zare university of tehran faculty of new sciences and technology mahdi hajiabadi university of tehran faculty of new sciences and technology

community detection is a task of fundamental importance in social network analysis. community structures enable us to discover the hidden interactions among the network entities and summarize the network information that can be applied in many applied domains such as bioinformatics, finance, e-commerce and forensic science. there exist a variety of methods for community detection based on diffe...

Journal: :آب و خاک 0
زارع ابیانه زارع ابیانه قاسمی قاسمی بیات ورکشی بیات ورکشی معروفی معروفی

abstract evapotranspiration as one of the important elements in agriculture has a considerable role in water resource management. therefore, using a more exact estimation method is an essential step of agricultural development, especially in arid semi-arid area. in this research, in order to exact estimate of garlic evapotranspiration using lysimeteric data, an artificial neural network (ann) m...

Journal: :journal of rangeland science 2011
a. ariapour m. nassaji zavareh

evaporation is one of the most important components of hydrologic cycle.accurate estimation of this parameter is used for studies such as water balance,irrigation system design, and water resource management. in order to estimate theevaporation, direct measurement methods or physical and empirical models can beused. using direct methods require installing meteorological stations andinstruments ...

Journal: :international journal of advanced biological and biomedical research 2014
ahmad ghanbari yasaman vaghei sayyed mohammad reza sayyed noorani

in recent years, researches on reinforcement learning (rl) have focused on bridging the gap between adaptive optimal control and bio-inspired learning techniques. neural network reinforcement learning (nnrl) is among the most popular algorithms in the rl framework. the advantage of using neural networks enables the rl to search for optimal policies more efficiently in several real-life applicat...

Journal: :international journal of environmental research 2015
s. yildiz m. degirmenci

in general, amount of sludge will definitely increase in near future and composting processes, optimum composting conditions and compost use as fertilizer and soil amendment will then be significant research topics. the present study was conducted for o2 parameter estimation by multiple regression and artificial neural networks methods. daily temperature, ch4, h2s, co2 and o2 measurements were ...

Journal: :journal of paramedical sciences 0
yadulla manavy science and research branch, islamic azad university, tehran, iran mona zamanian-azodi proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran. samira gilanchi proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran. roghieh omidi proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran.

artificial neural networks are used in many smart apparatus and different fields such as signal processing pattern diagnoses, military systems, medicine, financial systems, and artificial intelligence. in this article using quality of neural networks in optimizing energy cost in moving limb and its effectiveness in organization a cognitive function founded by presenting an algorithm for use in ...

Journal: :آب و خاک 0
فرزین پرچمی عراقی سیدمجید میرلطیفی شجاع قربانی دشتکی محمدحسین مهدیان

abstract infiltration process is one of the most important components of the hydrological cycle. on the other hand, the direct measurement of infiltration process is laborious, time consuming and expensive. in this study, the possibility of predicting cumulative infiltration in specific time intervals, using readily available soil data and artificial neural networks (anns) was investigated. for...

Journal: :اقتصاد و توسعه کشاورزی 0
رضا مقدسی میترا ژاله رجبی

abstract autoregressive integrated moving average (arima) has been one of the widely used linear models in time series forecasting during the past three decades. recent studies revealed the superiority of artificial neural network (ann) over traditional linear models in forecasting. but neither arima nor anns can be adequate in modeling and forecasting time series since the first model cannot d...

Journal: :iran agricultural research 2014
a. jafari a. bakhshipour r. hemmatian

abstract-manual harvesting of saffron as a laborious and exhausting job; it not only raises production costs, but also reduces the quality due to contaminations. saffron quality could be enhanced if automated harvesting is substituted. as the main step towards designing a saffron harvester robot, an appropriate algorithm was developed in this study based on image processing techniques to recogn...

Journal: :journal of optimization in industrial engineering 2010
babak abbasi behrouz afshar nadjafi

as is well known, estimating parameters of the tree-parameter weibull distribution is a complicated task and sometimes contentious area with several methods vying for recognition. weibull distribution involves in reliability studies frequently and has many applications in engineering. however estimating the parameters of weibull distribution is crucial in classical ways. this distribution has t...

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