نتایج جستجو برای: ga bp
تعداد نتایج: 89676 فیلتر نتایج به سال:
In order to improve the problem of low oxygen supply efficiency during aerobic composting and prolong maturity, a genetic algorithm was used optimize initial weights thresholds standard BP neural network obtain optimal parameters, then clonal selection mutation operator in duplicate operator. A CGA-BP based on an aeration prediction model constructed, predicted by ferment compost accelerate pro...
The current commercial intelligent driving systems still take the optimal strategy judged by machine to be only goal. Therefore, in order improve experience of following scene, based on assumption that environmental factors remain unchanged for a short time, five important parameters affecting scene are selected through correlation analysis, and vehicle-following research is carried out. This p...
This paper is to frame qualitative Bankruptcy Prediction (BP) rules using the concept of Ant Colony Algorithm. There are various researches in the area of qualitative BP, among them Genetic Algorithm (GA) seems to more effective. But the redundancy and over lapping of the generated rules cannot be overcome by GA. In our work, we are proposing ACO for generating the rules for qualitative BP. The...
Two Amerindian demographic shifts are attributed to climate change in the northwest plains of North America: at approximately 11,000 calendar years before present (yr BP), Amerindian culture apparently split into foothills-mountains vs. plains biomes; and from 8,000-5,000 yr BP, scarce archaeological sites on the open plains suggest emigration during xeric "Altithermal" conditions. We reconstru...
Neural network has been popular in time series prediction in financial areas, because of their advantages in handling nonlinear systems. This paper hybridizes genetic algorithm and artificial neural network method (GABP), and hybridizes principal component analysis and support vector machine (PCA-SVM) to predict the next opening price in stock markets. Principal component analysis method is app...
Grit blasting as a pretreatment process for the substrate surface before thermal spraying is of great importance assuring service performance coatings. In this work, novel hybrid artificial neural network (ANN) was presented to optimize grit improve structural properties and corrosion resistance Different parameters were combined pretreat surface, corresponding roughness, interface adhesion str...
مقدار کل کربن آلی (TOC) مهمترین پارامتر جهت ارزیابی پتانسیل هیدروکربنزائی سنگ منشأ میباشد. اندازهگیری TOC، مستلزم انجامِ آزمایشات ژئوشیمیاییِ پرهزینه و وقتگیر است، که روی تعداد محدودی نمونه صورت میگیرد. از این جهت، هدف اصلی این پژوهش برآورد پارامتر ژئوشیمیاییِ TOC از دادههای پتروفیزیکی است که امروزه از تمامی چاههای حفاری تهیه شده و کم هزینهتر میباشند. برای این منظور از سیستم ترکیبیGA-BP ...
Temperature is a predominant environmental factor affecting grass germination and distribution. Various thermal-germination models for prediction of grass seed germination have been reported, in which the relationship between temperature and germination were defined with kernel functions, such as quadratic or quintic function. However, their prediction accuracies warrant further improvements. T...
Abstract In order to design a solid rocket motor with high mass ratio, it is necessary find out the parameters of grain shape meet structural strength under volume loading fraction condition. A rapid optimization method for complex motors based on parametric modeling and GA-BP proposed. Based this, neural network prediction results are optimized as function fitness in GA, show that maximum Von ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید