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Data-Driven User Complaint Prediction for Mobile Access Networks

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Journal of Communications and Information Networks 2018年第3期3卷 9-19页

作者： Huimin Pan Sheng Zhou Yunjian Jia Zhisheng Niu Meng Zheng lu geng Department of Electronic Engineering Tsinghua UniversityBeijing 100084China College of Communication Engineering Chongqing UniversityChongqing 400044China Hitachi(China)Research&Development Cooperation Beijing 100190China

In this paper,we present a user-complaint prediction system for mobile access networks based on network monitoring *** applying machine-learning models,the proposed system can relate user complaints to network performance indicators,alarm reports in a data-driven fashion,and predict the complaint events in a fine-grained spatial area within a specific time *** proposed system harnesses several special designs to deal with the specialty in complaint prediction;complaint bursts are extracted using linear filtering and threshold detection to reduce the noisy fluctuation in raw complaint events.A fuzzy gridding method is also proposed to resolve the inaccuracy in verbally described complaint ***,we combine up-sampling with down-sampling to combat the severe skewness towards negative *** proposed system is evaluated using a real dataset collected from a major Chinese mobile operator,in which,events due to complaint bursts account approximately for only 0:3%of all recorded ***-sults show that our system can detect 30%of complaint bursts 3 h ahead with more than 80%*** will achieve a corresponding proportion of quality of experi-ence improvement if all predicted complaint events can be handled in advance through proper network maintenance.

关键词： data-driven complaint prediction complaint location network management machine learning pipeline

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工控网络安全态势感知算法实现

控制理论与应用 2016年第8期33卷 1054-1060页

作者：陆耿虹冯冬芹浙江大学工业控制技术国家重点实验室智能系统与控制研究所浙江杭州310027

为了探知工控系统的网络安全态势,准确判断系统运行状况,提出了安全态势感知方法.针对已有的完整性攻击研究,建立基于拜占庭将军问题的工控网络安全态势感知模型以及相应的安全态势感知算法.本文提出的算法主要通过三个部分实现:首先对... 详细信息

为了探知工控系统的网络安全态势,准确判断系统运行状况,提出了安全态势感知方法.针对已有的完整性攻击研究,建立基于拜占庭将军问题的工控网络安全态势感知模型以及相应的安全态势感知算法.本文提出的算法主要通过三个部分实现:首先对控制回路内的各节点信息进行采集与处理,得到系统中各节点状态;然后,利用所得节点状态,执行算法流程,确定系统内存在的恶意节点;最终获取准确的工控网络安全态势.实验结果表明:该态势感知模型与算法能准确提炼系统中的恶意节点并判断当前系统安全态势.

关键词：工业控制系统拜占庭将军问题完整性攻击网络安全态势感知

Translocation of telomerase reverse transcriptase coincided with ATP release in postnatal cochlear supporting cells

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Neural Regeneration Research 2024年第5期19卷 1119-1125页

作者： Yukai Zhang Keyong Tian Wei Wei Wenjuan Mi Fei lu Zhenzhen Liu Qingwen Zhu Xinyu Zhang Panling geng Jianhua Qiu Yongli Song Dingjun Zha Department of Otolaryngology Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina

The spontaneous bursts of electrical activity in the developing auditory system are derived from the periodic release of adenosine triphosphate(ATP)by supporting cells in the Kölliker’s ***,the mechanisms responsible for initiating spontaneous ATP release have not been *** previous study revealed that telomerase reverse transcriptase(TERT)is expressed in the basilar membrane during the first postnatal *** role in cochlear development remains *** this study,we investigated the expression and role of TERT in postnatal cochlea supporting *** results revealed that in postnatal cochlear Kölliker’s organ supporting cells,TERT shifts from the nucleus into the cytoplasm over *** found that the TERT translocation tendency in postnatal cochlear supporting cells in vitro coincided with that observed in *** analysis showed that TERT in the cytoplasm was mainly located in mitochondria in the absence of oxidative stress or apoptosis,suggesting that TERT in mitochondria plays roles other than antioxidant or anti-apoptotic *** observed increased ATP synthesis,release and activation of purine signaling systems in supporting cells during the first 10 postnatal *** phenomenon that TERT translocation coincided with changes in ATP synthesis,release and activation of the purine signaling system in postnatal cochlear supporting cells suggested that TERT may be involved in regulating ATP release and activation of the purine signaling *** study provides a new research direction for exploring the spontaneous electrical activity of the cochlea during the early postnatal period.

关键词： apoptosis ATP release Ca2+transients cochlea mitochondrial function reactive oxygen species spontaneous electrical activity supporting cells

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基于改进C-SVC的工控网络安全态势感知

控制与决策 2017年第7期32卷 1223-1228页

作者：陆耿虹冯冬芹浙江大学工业控制技术国家重点实验室杭州310027 浙江大学智能系统与控制研究所杭州310027

工控网络攻击类型多样、强度不一,在这种情况下,传统检测技术无法对多种类型的攻击进行有效识别,也无法给出全面准确的工控网络安全态势.为此,提出工控网络安全态势感知模型:首先采取改进的C-SVC算法对多源数据进行规则提取;然后利用决... 详细信息

工控网络攻击类型多样、强度不一,在这种情况下,传统检测技术无法对多种类型的攻击进行有效识别,也无法给出全面准确的工控网络安全态势.为此,提出工控网络安全态势感知模型:首先采取改进的C-SVC算法对多源数据进行规则提取;然后利用决策融合算法进行决策层融合,获取最终态势感知结果.实验结果表明:所提出的模型和算法能够有效地识别多类型攻击,准确判断出系统遭受到的攻击,并形成态势感知结果.

关键词：工业控制系统网络安全态势感知改进的C-SVC 决策融合

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基于粒子滤波的工业控制网络态势感知建模

自动化学报 2018年第8期44卷 1405-1412页

作者：陆耿虹冯冬芹浙江大学智能系统与控制研究所工业控制技术国家重点实验室杭州310027

粒子滤波(Particle filtering,PF)算法能有效地对工控系统这一类非线性、非高斯噪声系统进行状态估计,但在实际采用经典粒子滤波状态估计检测攻击时,实验结果显示该方法存在很高的漏检率,无法保障系统安全.因此改进经典算法,提出了基于... 详细信息

粒子滤波(Particle filtering,PF)算法能有效地对工控系统这一类非线性、非高斯噪声系统进行状态估计,但在实际采用经典粒子滤波状态估计检测攻击时,实验结果显示该方法存在很高的漏检率,无法保障系统安全.因此改进经典算法,提出了基于粒子滤波输入估计的态势理解算法.该算法在考虑系统输入与输出关系的同时,结合蒙特卡洛思想,提取工控系统态势特征,计算态势指标,最终实现态势理解.实验结果表明,该算法能有效地感知持续性攻击,并判断系统态势.

关键词：工控系统态势感知粒子滤波态势理解

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基于不同搜索路径下成对随机游走的推荐算法

计算机集成制造系统 2024年第4期30卷 1389-1396页

作者：耿秀丽牛璐上海理工大学管理学院上海200093

推荐系统中用户项目之间的交互及其他信息可以构成一个异构信息网络(HIN)。传统基于HIN的推荐算法往往直接构建用户项目间的异构信息网络,忽略了用户用户以及项目项目本身具有的相似性,所构建的网络不够完整,并且在计算节点关联性时鲜... 详细信息

推荐系统中用户项目之间的交互及其他信息可以构成一个异构信息网络(HIN)。传统基于HIN的推荐算法往往直接构建用户项目间的异构信息网络,忽略了用户用户以及项目项目本身具有的相似性,所构建的网络不够完整,并且在计算节点关联性时鲜有考虑不同搜索路径下的不同关联性。为解决上述问题,提出一种考虑用户及项目本身相似性的HIN推荐算法。通过查找用户与项目之间更多的搜索路径,并考虑不同的搜索路径,引入深度学习中的随机游走(RW)来度量用户项目节点之间的关联度,从而实现更加精确的推荐。将所提算法在公开的MovieLens数据集上进行了实验,实验结果表明:相较于传统的协同过滤推荐算法以及基于HIN的推荐算法,基于不同搜索路径下成对随机游走的算法具有更高的推荐性能。

关键词：推荐系统异构信息网络元路径随机游走 Hete Sim

TSCompiler: efficient compilation framework for dynamic-shape models

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Science China(Information Sciences) 2024年第10期67卷 67-84页

作者： Xiang luO Chen ZHANG Chenbo geng Yanzhi YI Jiahui HU Renwei ZHANG Zhen ZHANG Gianpietro CONSOLARO Fan YANG Tun lu Ning GU Li SHANG School of Computer Science Fudan University School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University School of Computer Science and Technology Harbin Institute of Technology Huawei Technologies Co. Ltd. Huawei Paris Research Center School of Microelectronics Fudan University

Today's deep learning models face an increasing demand to handle dynamic shape tensors and computation whose shape information remains unknown at compile time and varies in a nearly infinite range at runtime. This shape dynamism brings tremendous challenges for existing compilation pipelines designed for static models which optimize tensor programs relying on exact shape values. This paper presents TSCompiler, an end-to-end compilation framework for dynamic shape models. TSCompiler first proposes a symbolic shape propagation algorithm to recover symbolic shape information at compile time to enable subsequent optimizations. TSCompiler then partitions the shape-annotated computation graph into multiple subgraphs and fine-tunes the backbone operators from the subgraph within a hardware-aligned search space to find a collection of high-performance schedules. TSCompiler can propagate the explored backbone schedule to other fusion groups within the same subgraph to generate a set of parameterized tensor programs for fused cases based on dependence analysis. At runtime, TSCompiler utilizes an occupancy-targeted cost model to select from pre-compiled tensor programs for varied tensor shapes. Extensive evaluations show that TSCompiler can achieve state-of-the-art speedups for dynamic shape models. For example, we can improve kernel efficiency by up to 3.97× on NVIDIA RTX3090, and 10.30× on NVIDIA A100 and achieve up to five orders of magnitude speedups on end-to-end latency.

关键词： machine learning tensor compilers dynamic shape operator fusion code generation auto-tuning

Protective effects and microarray-based mechanism of sea cucumber hydrolysates against high-glucose induced nephrotoxicity in mouse glomerulus mesangial cells

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未来食品学报(英文) 2024年第3期4卷 233-240页

作者： Lingxin geng Jiaojiao Han Jun Zhou Ye Li Tinghong Ming Zhen Zhang Chenyang lu Xiurong Su State Key Laboratory for Quality and Safety of Argo-products School of Marine ScienceNingbo UniversityNingbo 315211China

Diabetic nephropathy(DN)is a common type of end-stage renal disease and glomerular mesangial cells(GMCs)are widely used as a cell model for *** study firstly investigated the inhibitory effects of the Apostichopus japonicus and Acaudina leucoprocta hydrolysates on cellular growth under high-glucose treatment,better inhibitory effect of *** hydrolysate was observed compared to that of *** ***,the global transcription profiles obtained via microarray analysis showed that 6070 and 7015 genes were identified in the *** and *** groups compared with the model group,*** them,transcriptions of the slc30a4,slc35dl,tppp3,tp53inpl,bcl-2,apafl,alox12b and adrala genes were restored from the levels of the model group to those of the control group,contributed to cell mitosis and proliferation in both treatment *** addition,other apoptosis-related genes,such as bcl-6,clu,foxo3 and akt,showed opposite trends between two groups,which might cause the difference in inhibitory *** preliminarily proposed that the regulation effects of *** and *** on the genes involved in cellular mitosis,proliferation and apoptosis,might contribute to their inhibitory activity on GMCs under high-glucose environment.

关键词： Diabetic nephropathy Apostichopus japonicus Acaudina leucoprocta Hydrolysate Rat mesangial cell Microarray

Cr25Ni35Nb和Cr35Ni45Nb合金高温渗碳浓度场的数值模拟

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材料热处理学报 2010年第7期31卷 151-156页

作者：秦小燕巩建鸣耿鲁阳南京工业大学机械与动力工程学院江苏南京210009

以Cr25Ni35Nb和Cr35Ni45Nb炉管钢为研究对象,以菲克第二定律和"平衡常数法"为理论基础,采用有限差分数值方法,实现了这两种高Cr-Ni裂解炉管材料高温渗碳时碳的扩散和碳化物析出的模拟,给出了渗层的总碳含量、基体中的碳含量、基体中合... 详细信息

以Cr25Ni35Nb和Cr35Ni45Nb炉管钢为研究对象,以菲克第二定律和"平衡常数法"为理论基础,采用有限差分数值方法,实现了这两种高Cr-Ni裂解炉管材料高温渗碳时碳的扩散和碳化物析出的模拟,给出了渗层的总碳含量、基体中的碳含量、基体中合金元素含量在不同渗碳时间沿壁厚的分布。在1000℃对两种材料进行了固体渗碳实验,分析比较了高温下两种材料的渗碳动力学规律。结果表明,浓度场模拟结果与实验测量值吻合较好。从渗碳增重曲线和浓度场模拟结果可以看出,Cr35Ni45Nb钢的抗渗碳能力强于Cr25Ni35Nb钢。

关键词：渗碳菲克第二定律平衡常数法数值模拟