sparseness
英
美
网络 稀少; 稀疏; 稀疏性; 稀疏度; 稀疏化
COCA.37869
英英释义
noun
双语例句
- An improved active array errors calibration algorithm using the sparseness of mutual coupling matrix
一种利用互耦矩阵稀疏性的阵列误差有源校正改进算法 - Application of Combined Norm Constrained Sparseness Spike Inverse
L1-L2范数联合约束稀疏脉冲反演的应用 - But it also has many problems, such as data sparseness problem, the system scalability problem and time factor problem.
但协同过滤推荐算法还不够成熟，仍然存在一些问题，如数据稀疏性问题、系统的可扩展性问题和时间因素问题等。 - A genetic algorithm with adaptive evaluation function is presented to deal with data sparseness problem in automatic semantic tagging.
针对数据稀疏问题，采用适应度函数较灵活的遗传算法做语义的自动标注； - This approach make use of the sparseness of speech signals and the independent characteristics of speech signals. Use the fast quasi-newton method, it greatly simplify the Hessian matrix, and it also greatly increases the speed of operation.
该方法运用语音信号的稀疏性和语音信号之间相互独立的特性，使用快速相对牛顿法，使得在牛顿法中，求海森阵的步骤大为简化，大大提高了运算速度。 - Summing up the history and the current development of the personalized recommendation system, and pointing out the two bottleneck problems of "cold start" and "data sparseness" existing in the collaborative filtering recommendation algorithm. 2.
本文主要做了以下研究工作：1.对个性化推荐系统的发展历史及现状进行了综述，指出了协同过滤推荐算法中存在的冷开始和数据稀疏性两大瓶颈问题。 - Because the data it used was not users'rating but users'browse route, the problem of data sparseness and initial rating was resolved.
由于数据不是简单的用户评分，而是用户浏览网页的路径，这样就解决了数据稀疏问题和最初评价问题。 - Data sparseness led by the lack of training data restricts the promotion of the supervised methods.
由训练语料不足导致的数据稀疏问题限制了有指导方法的推广。 - The data sets have features such as high-dimensional, sparseness and binary value in many clustering applications.
在许多聚类应用中，数据对象是具有高维、稀疏、二元的特征。 - The scheme resolves the problem of high dimension and large sparseness in basket data and improves efficiency of clustering.
使用了一种新的事务表示法，解决了购物篮数据的高维性和稀疏性问题。并对算法进行了相应的改进，从而提高了聚类速度。