欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
局部线性嵌入算法（Locally Linear Embedding LLE）是一种功能强大的数据降维方法，但它在处理稀疏数据源时的失效问题限制了其广泛应用，且至今没有一个完善的解决方案。为解决这一问题，从算法原理和执行过程两方面分析算法失效原因，把算法的两个优化过程联合优化，对算法进行改进。通过对S曲线稀疏采样模拟稀疏数据源，把改进前后的算法对样本点实验结果进行对比，验证了算法改进的有效性；同时，用改进后的算法处理人脸数据，展示了改进后算法的实用价值。改进后的算法将进一步促进局部线性嵌入在工程和研究领域的应用，极大地改善了算法的性能。
英文摘要：
Locally Linear Embedding（LLE） algorithm is a powerful algorithm in data dimension reduction. But, its impotence in case of sparse source data greatly restricts its applicability, and there is still no satisfactory answer to this problem. To solve this problem, this paper makes a deep -into analysis of its vulnerability on both the theory side and its specific implementation, thus to improve the algorithm by uniting the two optimizing equation of the algorithm. And then, by imitating the case of sparse source data with sparse sampling of the S - curve, this paper compare the modified algorithm＇s performance with its original counterpart to prove the effectiveness of the modification, and then to illustrate the modified algorithm＇s usability through two groups of experiments on face image. The modification can further enlarge LLE algorithm＇s sphere of applicability and improve the algorithm greatly.
同期刊论文项目
同项目期刊论文
Distinct neural correlates for resolving Stroop conflict at inhibited and non-inhibited locations in
Combination Methodologies of Multi-agent Hyper Surface Classifiers: Design and Implementation Issues
Auditory and speech processing and reading development in Chinese school children: Behavioural and E
Auditory fear conditioning modulates prepulse inhibition in socially-reared rats and isolation-reare
Top-down Control is not lost in the attentional blink:?Evidence from intact endogenous cuing. Experi
Searching for two feature singletons in the visual scene: The localized attentional interference eff
Alerting deficits in children with attention deficit/hyperactivity disorder: Event-related fMRI evid
Interaction between Location- and Frequency-based Inhibition of Return (IOR) in Human Auditory Syste
Orthographic and phonological processing in Chinese dyslexic children: An ERP study on sentence read
The influence of the perceptual or fear learning on rats’prepulse inhibition induced by changes in t
Chronic administration of clozapine alleviates reversal learning impairment in isolation reared rats
Auditory evoked responses in the rat: transverse subdermal electrodes register before cochlear nucle
Metabotropic glutamate receptors subtype 5 are necessary for the enhancement of auditory evoked pote
Processing multidimensional objects under different perceptual loads: The priority of bottom-up perc
Effects of spatial distribution of attention during inhibition of return (IOR) on flanker interferen
Semantic and syntactic processing in Chinese sentence comprehension: Evidence from event-related pot
The universal fuzzy logical framework of neural circuits and its application in modeling primary vis
An Index and Retrieval Framework Integrating Perceptive Features and Semantics for Multimedia Databa
Processing different levels of syntactic hierarchy in sentence comprehension: An ERP study on Chines
ERP correlates of the development of orthographical and phonological processing during Chinese sente
Repeating the stimulus exposure to investigate what happens after initial selective attention to thr
Metabotropic glutamate subtype 5 receptors modulate fear-conditioning induced enhancement of prepuls
期刊信息
位置：