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A Data Mining Model by Using ANN for Predicting Real Estate Market: Comparative Study 被引量:1
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作者 Itedal Sabri Hashim Bahia 《International Journal of Intelligence Science》 2013年第4期162-169,共8页
This paper aims to demonstrate the importance and possible value of housing predictive power which provides independent real estate market forecasts on home prices by using data mining tasks. A (FFBP) network model an... This paper aims to demonstrate the importance and possible value of housing predictive power which provides independent real estate market forecasts on home prices by using data mining tasks. A (FFBP) network model and (CFBP) network model are one of these tasks used in this research to compare results of them. We estimate the median value of owner occupied homes in Boston suburbs given 13 neighborhood attributes. An estimator can be found by fitting the inputs and targets. This data set has 506 samples. “ousing inputs” is a 13 × 506 matrix. The “housing targets” is a 1 × 506 matrix of median values of owner-occupied homes in $1000’s. The result in this paper concludes that which one of the two networks appears to be a better indicator of the output data to target data network structure than maximizing predict. The CFBP network which is the best result from the Output_network for all samples are found from the equation output = 0.95 * Target + 1.2. The regression value is approximately 1, (R = 0.964). That means the Output_network is matching to the target data set (Median value of owner-occupied homes in $1000’s), and the percent correctly predict in the simulation sample is 96%. 展开更多
关键词 CASCADE FORWARD BACK PROPAGATION (cfbp) Feed FORWARD BACK PROPAGATION (FFBP) Data Mining HOUSE PRICE
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碳纤维约束高强混凝土柱轴压力学性能试验
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作者 马岩峰 刘廷权 《河北联合大学学报(自然科学版)》 CAS 2014年第2期102-105,共4页
进行了对C40-C60强度等级下46个混凝土短柱包裹不同层数CFRP布后的轴心受压试验研究。通过对试验结果的比对,研究了轴压短柱中CFRP布包裹加固中不同混凝土强度等级对以及不同CFRP布包裹层数对短柱轴压性能的影响,并从材料微观角度对加... 进行了对C40-C60强度等级下46个混凝土短柱包裹不同层数CFRP布后的轴心受压试验研究。通过对试验结果的比对,研究了轴压短柱中CFRP布包裹加固中不同混凝土强度等级对以及不同CFRP布包裹层数对短柱轴压性能的影响,并从材料微观角度对加固效果的影响因素作出分析。 展开更多
关键词 CFRP 约束混凝土 轴心受压 水灰比 三相受力
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