简介:PriorityorderedBPneuralnetworkandtheapplicationforspeakeridentification;ProbingmodificationofBPneuralnetworklearning-rate;Real-timeoptimalexcitationcontrollerusingneuralnetwork;ResearchonthemodelingoftheaxialloaddistributioncoefficientofcylindricalgearsingearCADbasedonANN;Short-termsystemmarginalpriceforecastingwithhybridmodule;StudyonautomaticcreatingmethodofpublictransportationdispatchingformbasedonBPneuralnetwork。
简介:有这么一句话:穷透骨头的乞丐,往上数也必有曾经富贵过的祖先。这话是宣扬一种哲学还是诠释一种规律抑或是推演一种理论我觉得都有那么点意思。就拿我笔下这位带BP机的乞丐说,他的祖上在明朝末期就很富贵过一阵子。该祖上尊姓施,官至陕西布政使,家中宅院深深,田产颇丰,还在风光秀丽的七机岩盖下过漂亮的山庄别墅。据说,一六六四年在西安建立过大顺农民革命政权,而后直逼北京,推翻了明王朝统治的李自成起义,最初还是这位施姓的布政使催粮逼税,高压统治引发而成的呢。书归正传,还说这位带BP机的乞丐,便是那布政使的十几代孙。其人长得中等个头,身板粗壮如北方山区背粪的篓子。他前额挺而突出,下颌弯而翘起,鼻子眼都窝在前额与下颌间如古时朝堂上用的笏板的凹面内。一见之下给人最初的印象
简介:Thecapabilityofmultilayerperceptrons(MLPs)forapproximatingcontinuousfunctionswitharbitraryaccuracyhasbeendemonstratedinthepastdecades.Backpropagation(BP)algorithmisthemostpopularlearningalgorithmfortrainingofMLPs.Inthispaper,asimpleiterationformulaisusedtoselecttheleamingrateforeachcycleoftrainingprocedure,andaconvergenceresultispresentedfortheBPalgo-rithmfortrainingMLPwithahiddenlayerandalinearoutputunit.Themonotonicityoftheerrorfunctionisalsoguaranteedduringthetrainingiteration.
简介:摘要胰岛素样生长因子2 mRNA结合蛋白1(IGF2BP1)是机体发育过程中mRNA代谢和转运的关键调控因子。近年来研究发现,IGF2BP1在肝癌、肺癌、结肠癌、卵巢癌、乳腺癌等多种肿瘤中异常表达。IGF2BP1不仅与肿瘤细胞的增殖、迁移和侵袭有关,而且还与患者不良预后密切相关。进一步研究IGF2BP1在恶性肿瘤中的作用机制有望为肿瘤靶向治疗提供新的方法。