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双语推荐:区间划分

该文提出一种音频情感区间划分方法。该方法以提取音频情感语义方面为目的,可以有效地划分出视频流中音频通道的情感区间。首先,事先选定若干种音频中层情感认知类型,并采用基于分层二叉树SVM分类算法对每个音频段进行中层情感认知初分类,然后提出一种基于规则的分类结果平滑策略对初分类结果进行平滑。最后,利用从中层认知到高层情感感知的映射机制,将中层认知映射到高层情感感知以识别高层情感语义,最终完成音频情感区间划分。实验证明,该方法对音频情感区间划分具有良好的效果。
This paper proposes a emotion perception based division approach of audio emotional range, which starts with the au-dio emotional semantic analysis and works well. Firstly, several kinds of middle-level emotional cognitive type are selected in ad-vance. An hierarchical binary tree based SVM classifier algorithm is performed to classify the middle-level emotional cognitive type initially. Next, for the purpose of finishing emotion labeling, a rule based smoothing strategy for emotional ranges is proposed to smooth the former classification results. Finally, a mapping mechanism, from middle-level cognitive types to high-level emo-tional perceptional types, is adopted to synchronize the high-level audio emotional perception results onto the horizontal axis of audio energy curve. Experimental results demonstrate that the proposed scheme is effective for audio emotional range division.
提出了一种易于学生掌握的《信号与系统》课程中卷积运算图解法的教学方法。在卷积运算的图解法中,参变量t的不同区间划分是教学的重点和难点,总结多年教学实践,提出了“每次只允许一次边界跨越”的参变量t区间划分的原则。按照该原则,学生很容易掌握参变量t的区间划分方法和积分上下限的确定,计算出准确的卷积积分结果。多年的教学经验表明,此方法深受学生欢迎,同时也取得了较好的教学效果。
A teaching method for the graphical method to convolution operation in the course of"Signal and System"is proposed, which is easy to be mastered by students. In the method, the division of different intervals of parameter t is an important and difficult point in teaching. Based on the author''s long-term teaching practice, a principle to divide intervals of parameter t that"only crossing border once in every interval is allowed"is presented. According to that principle, students are easy to master the dividing method of intervals of parameter t and the determination of the integration range, and obtain the convolution result. The teaching experience for many years shows that this method is well accepted by the students and the teaching effect is satisfactory.

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在模糊时间序列模型的构架中,介绍了广义模糊时间序列模型建立过程和常用的模糊区间划分方法,提出了基于均匀划分、模糊C均值聚类和自动聚类3种模糊区间划分方法的广义模糊时间序列模型,并用Alabama大学入学人数和沪市股指两组数据对模型进行了详细的分析.实验结果不仅揭示了这3种方法对模型预测结果的影响,还证明了广义模型优于传统模型.
In the framework of fuzzy time series model ,the generalized fuzzy time series model and some methods for partitioning fuzzy interval are presented and summarized . Secondly , three generalized fuzzy time series models on the basis of average partition ,fuzzy C-mean (FCM ) clustering and automatic clustering techniques are presented .Enrollment of the University of Alabama and the close prices of Shanghai Stock Exchange Composite Index (SSECI) are served as the training data sets for the proposed models .The empirical analyses not only reveal the impact of three partition methods on the forecast results , but also show that the generalized model outperforms the conventional counterparts .

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针对区间数模糊c均值聚类算法存在模糊度指数m无法准确描述数据簇划分情况的问题,对点数据集合的区间Ⅱ型模糊c均值聚类算法进行拓展,将其扩展到区间型不确定数据的聚类中。同时,分析了区间数的区间Ⅱ型模糊c均值聚类算法的收敛性,以确定模糊度指数m1和m2的取值原则。基于合成数据和实测数据的仿真实验结果表明:区间数的区间Ⅱ型模糊c均值聚类算法比区间数的模糊c均值聚类算法的聚类效果好。
In the fuzzy c-means clustering method for interval-valued data, the fuzzifier is responsible for clustering performance. However, it is impossible to accurately confirm the fuzzifier with a single value because of the uncertainty dispersion of the dataset. In this paper, we extend the IT2 FCM clustering method for point data to that for interval data, and exploit the differences between these two clustering methods by comparing their iterative processes. The iteration process of the KM algorithm is discussed and the selection rules for fuzzifiers for IT2 IFCM clustering method is provided in this paper. The validity of the proposed clustering method is investigated and compared to the IFCM clustering methods for synthetic and real interval-valued datasets. Computational results verify the validity of the proposed method.

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针对现有连续函数优化蚁群算法对自变量的初始区间存在敏感度问题,提出泛区间搜索的理念。通过在网格策略上加入新元素---自调整定义域的机制、自适应的蚁群规模、自适应的信息素增加强度和自适应的网格划分份数,提出泛区间搜索的连续函数优化蚁群算法。该算法可根据现有区间判断最优解的方位,实现全实数范围内的广度搜索。仿真实验表明该算法具备鲁棒性,在初始区间不含最优解的条件下也能找到最优解,且收敛速度和计算准确性受区间变化的影响较小。
A concept of extensive-domain search is proposed to make ant colony optimization for continuous function overcome the sensitivity to initial domains of independent variables. By adding new elements to the gridding method, such as self-adaptive domain adjustment, self-adaptive ant size, self-adaptive pheromone increment and self-adaptive domain division, extensive-domain-search ant colony optimization (EDS-ACO) is put forward. Thus, the optimal solution can be found by EDS-ACO through an extensive search in the whole range of real numbers. Experiments show that EDS-ACO has the robustness since it can obtain the correct results in the case of initial domains without the optimal solution. The variation of initial domains has a small influence on convergence speed and computational accuracy of EDS-ACO.

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基于负荷曲线分布特征,运用模糊隶属度函数法划分峰谷时段,结合集合分类思想,引入阀值指标函数确定时段区间。借鉴已实施时段划分方案的特点,提出修正策略,对一些难以界定时段属性的点进行调整,得到4个季度的峰谷时段划分方案。考虑4个季度的用电差异性,提出采用加权二范数函数法的全年综合峰谷时段划分模型。结合某地区实例分析,证明综合时段划分方案比已实施的时段划分方案更符合负荷曲线分布特征,能有效地激励用户的需求响应。
Based on the distribution of the load curve,this paper uses the fuzzy membership function method to divide the peak-valley time period. Combined with a collection of classified ideas, the paper introduces a threshold index function to determine the time period. By reference to the characteristics of the time period partition scheme which has been implemented, the paper presents correction strategies to adjust some points which are difficult to define the time attribute. Considering differences of electricity consumption in four quarters, the paper proposes an annual consolidated peak-valley time period partition model by the weighted two-norm function method. Studies of a regional case prove that the integrated program is better in line with the distribution of load curves and can effectively stimulate the users’demand response.
提出一种新的有效的FTIR光谱气体浓度反演的方法。该方法将区间划分的思想用于红外光谱波长优化筛选,即将红外光谱在给定波长范围内划分为若干个子区间,在每个子区间中利用遗传算法(genetic algorithm,GA)优化后的极限学习机(extreme learning machine,ELM)建立浓度预测模型,根据每个子区间测试集均方根误差RMSE和相关系数R2的大小评价模型的泛化性能,筛选出最优子区间组合建立预测模型。通过含干扰组分(CO2,N2O)的CO气体的FTIR光谱对提出的算法进行了验证,在波段为2 140~2 220cm-1范围内利用区间法筛选出的最优组合作为变量,应用GA-ELM建立的浓度反演模型,其决定系数R2为0.987 4,均方根误差RMSE为154.996 3,建模时间仅为0.8s,表明该算法(Interval-GA-ELM,iGELM)的应用不仅缩短了建模时间,而且在干扰组分存在的情况下,依然可以准确筛选出特征波长,从而提高了模型稳定性和预测精度,为大气污染气体遥测分析提供了行之有效的方法。
This paper proposed a novel effective quantitative analysis method for FTIR spectroscopy of polluted gases ,which se-lect the best wavenumbers based on the idea of interval dividing .Meanwhile ,genetic algorithm was adopted to optimize the con-nect weights and thresholds of the input layer and the hidden layer of extreme learning machine (ELM ) because of its global search ability .Firstly ,the whole spectrum region was divided into several subintervals ;Secondly ,the quantitative analysis mod-el was established in each subinterval by using optimized GA-ELM ;Thirdly ,the best combination of subintervals was selected according to the generalized performance of each subinterval model by computing the parameters root mean square error (RMSE) and determined coefficients r .In this paper ,the mixture of CO ,CO2 and N2 O gases were selected as the research object and the whole spectrum range was from 2 140 to 2 220 cm -1 .The experiment results showed that the RMSE of model established with

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在研究系统安全性的实际过程中发现,影响系统的因素很多情况下表现出来的是一个区间域值。特别是对复杂系统影响因素的提取,往往是靠长时间使用者的经验给出的导致系统失效的因素范围值。就该问题提出了系统T在属性a为区间域值的情况下对对象集U的划分决策规则。从基础信息决策表出发,计算相似度S(xi,xj)得到相似度矩阵,在定f情况下划分每个对象聚类C( xi ),并进行聚类化简得到U ={L( X1),…,L( XR )},根据决策集D的聚类划分得到U划分类到决策D之间的类对应规则,最后得到决策模式D( di )。列举了一个电器系统例子,针对其环境变量(使用时间和使用温度)在不同范围组合下对系统安全性等级的影响进行了划分,并得到了决策模式及分类。
In the actual process of study on system security, it has been found that the influence factors of the sys-tem show as the interval domain value in many cases, especially when extracting the influencing factors of complex systems, it usually depends on the range value of the factors leading to the system failure, given by the experience of users in a long time period.In order to solve the above problems, the classification decision rules of the object set U was put forward considering the interval domain value of attribute a in the system T.Based on basic informa-tion decision table, the similarities S(xi,xj) were calculated to composite the similarity matrix.Under the condition of given f, each object cluster C(xi) was divided and simplified to U ={L(X1),…,L(XR)}.According to the cluster division of decision set D, the corresponding rules from U to D were obtained.Finally the decision model D( di ) was build.For an example of electrical system, the influence of system secur

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由于传统的生态安全评价方法不能处理区间数和语言值,并且安全度等级划分的主观性和随意性较大,评价结果有效性差。基于二元语义和区间FCM的生态安全评价方法,将实数看成区间数的特例,语言数也转化为区间数,FCM聚类方法将区间值转化为语言值,根据最大隶属度原则,对方案集进行分类。将语言值转化为二元语义,将方案集成结果转换为二元语义,利用二元语义的有序性对方案进行排序,既能处理区间值也能处理语言值,分类标准更加客观。
Because the traditional evaluation method for ecological security can''t deal with interval number and linguistic value, and there are great subjectivity and randomness about the security grade, then the effectiveness of the results is very low. The ecological security evaluation method based on two-tuple linguistic and internal FCM takes the real numbers as a special case of interval number, the number of languages is also converted to interval number, FCM clustering method transforms interval values into linguistic values, according to the principle of maximum degree, the program was set for classification. Converting the linguistic values to two-tuple linguistic, transforming integrated results of the program into two-tuple linguistic and making use of the two-tuple linguistic orderliness sort the program can deal with both the interval value and linguistic value, and classification standard get more objective.

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宽动态范围压缩算法作为助听器非线性听力补偿的核心算法,其释放时间常数的设定可影响言语理解度。根据普通话的语音特点,将宽动态范围压缩算法按频率范围划分为低频区间(
In digital hearing aids, wide dynamic range compression algorithm (WDRC) is commonly treated as the core algorithm to compensate loudness. Differences between release time constants in WDRC can affect speech intelligibility (SI). Based on unique acoustic characteristics of Mandarin, WDRC algorithm are divided into two parts: low frequency (LF) channel and high frequency (HF) channel. Release time constants are taken as 5 ms, 100 ms, and 2000 ms in either LF channel or HF channel. Combining a certain LF release time constant with a certain HF one forms totally nine different release time combinations for hearing tests. Normal hearing objects go through the Mandarin SI tests with speech shaped noise. The testing material is Mandarin sentences which are the outputs of WDRC simulation in the 9 different release time combinations. Test results show that too short release time in LF channel or too long release time in HF channel trends to decrease Mandarin SI. The results can be a reference

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