Dynamic commonsense knowledge fused method for Chinese implicit sentiment analysis

Compared with explicit sentiment analysis that attracts considerable attention, implicit sentiment analysis is a more difficult task due to the lack of sentimental words. The abundant information in an external sentimental knowledge base can play a significant complementary and expansion role. In this paper, a sentimental commonsense knowledge graph embedded multi-polarity orthogonal attention model is proposed to learn the implication of the implicit sentiment. We analyzed the effectiveness of different knowledge relations in the ConceptNet knowledge base in detail, and proposed a matching and filtering method to distill useful knowledge tuples for implicit sentiment analysis automatically. By introducing the sentimental information in the knowledge base, the proposed model can extend the semantic of a sentence with an implicit sentiment. Then, a bi-directional long–short term memory model with multi-polarity orthogonal attention is adopted to fuse the distilled sentimental knowledge with the semantic embedding, effectively enriching the representation of sentences. Experiments on the SMP2019-ECISA implicit sentiment dataset show that our model fully utilizes the information of the knowledge base and improves the performance of Chinese implicit sentiment analysis.     

次强Hermiter矩阵及其性质

在次Hermiter矩阵定义的基础上给出了次强Hermiter矩阵的概念,利用次Hermiter矩阵的研究方法及性质,推出了次强Hermiter矩阵的一些性质．     

Jacobi正交多项式的一些性质

Jacobi正交多项式被广泛地应用于Jacobi谱方法的数值分析中,它的性质对于误差分析极其重要．通过总结Jacobi正交多项式的一些性质,给出了它的一些新性质．     

菲汀提取工艺的试验研究

用正交设计法设计了菲汀提取条件的方案,并对试验结果进行了方差分析。结果表明:沉淀剂的变化对菲汀收率的影响非常显著。     

实验室葡萄糖银镜反应最佳条件的探讨

拟从制约银镜反应实验的条件出发，采用正交设计的方法，对制约银镜反应实验的因素进行方差分析，寻求银镜反应实验中各因素的最佳组合条件。     

正定矩阵的性质及其应用

对正定矩阵的一些性质进行了整合,给出了正定矩阵的几个应用,并对这些应用中结论的证明作了进一步的补充.     

Noisy chaotic neural network for resource allocation in high-speed train OFDMA system

High-speed train communication system is a typical high-mobility wireless communication network. Resource allocation problem has a great impact on the system performance. However, conventional resource allocation approaches in cellular network cannot be directly applied to this kind of special communication environment. A multidomain resource allocation strategy was proposed in the orthogonal frequency-division multiple access （OFDMA） of high-speed. By analyzing the effect of Doppler shift, sub-channels, antennas, time slots and power were jointly consid- ered to maximize the energy efficiency under the constraint of total transmission power. For the purpose of reducing the computational complexity, noisy chaotic neural network algorithm was used to solve the above optimization problem. Simulation results showed that the proposed resource allocation method had a better performance than the traditional strategy.     

正交频分复用光通信实验系统设计与实现

设计了基于直接检测的正交频分复用(DD-OFDM)光通信实验系统,能够反映出OFDM光通信系统的主要特征,且离实用距离较近。DD-OFDM光通信系统包括OFDM信号的构造、OFDM信号的析构以及光纤传输3个部分功能,在实验中分别由任意信号发送器、数字系列分析仪以及自行搭建的光纤传输链路实现,实现了10 Gbit/s二进制序列经16QAM映射、64载波传输、在25 km单模光纤中的可靠传输。给出星座图和不同接收光功率条件下系统的误码性能的实验结果。为OFDM高速光通信的教学与科研提供实验平台和实验样板。     

岩爆相似材料配比试验及敏感性分析

深部隧道岩爆已成为影响工程安全施工的重要危险源,室内模拟实验是研究深部岩爆问题的重要手段之一。为研究岩爆倾向性较高的模型,使用石英砂、水泥、石膏等材料进行配置,设计正交试验方案,进行力学试验,依据岩爆倾向性指数及脆性指标,利用试验试件参数进行有限元模拟,对室内试验进行验证。结果表明,配比为石英砂55%、石膏水泥比2.5:1、松香4%、水含量23.3%的2号试件具有比其他两组试件更强的脆性,配比为石英砂70%、石膏水泥比1.5:1、松香3.5%、水含量20.6%的16 号试件具有更强的岩爆倾向性。以2 号试件为例进行数值模拟,两者数据拟合较好,模拟现象与试验现象相吻合,可为岩爆室内试验及模拟提供参考。     

商洛杜仲叶绿原酸含量测定及提取工艺研究

以商洛市所产杜仲叶为原料,乙醇为浸提溶剂,通过正交试验确定杜仲叶中绿原酸的最佳提取工艺。试验结果表明：杜仲叶中绿原酸的最佳提取条件为乙醇浓度60％,温度80℃,提取时间2．5h,料液比1：20。最佳工艺条件下绿原酸的提取率为2．114％。试验提取方法简便,结果准确可靠,可为商洛市杜仲叶中绿原酸的生产开发提供参考。