منابع مشابه
Rejoinder: Treelets
1. A multiresolution transform guided by the second-order statistics of the data. The treelet transform is a multiresolution transform that allows one to represent the original data in an alternative form. Rather than describe the data in terms of the original set of covariates we perform a series of rotations which gradually reveal the hierarchical grouping structure of the covariates. The ide...
متن کاملGrouping of correlated feature vectors using treelets
In many applications, features are highly correlated to one another and algorithms used to construct networks from the data such as Lasso are unable to distinguish between them. Specifically, many genes in microarray gene expression data are highly correlated and knowledge of the representative groups can be useful. By using treelets, a hierarchical tree and an orthonormal basis are constructed...
متن کاملLarge-Scale Syntactic Language Modeling with Treelets
We propose a simple generative, syntactic language model that conditions on overlapping windows of tree context (or treelets) in the same way that n-gram language models condition on overlapping windows of linear context. We estimate the parameters of our model by collecting counts from automatically parsed text using standard n-gram language model estimation techniques, allowing us to train a ...
متن کاملDiscussion of Treelets by Lee, Nadler and Wasserman
The authors’ emphasis is on the method as a useful way of representing data analogous to a wavelet representation where X = X(t) with t genuinely identified with a point on the line and observartion at p time points ,but where the time points have been permuted. As such this can be viewed as a clustering method which, from their examples, gives very reasonable answers. However, to make more gen...
متن کاملA Convolutional Treelets Binary Feature Approach to Fast Keypoint Recognition
Fast keypoint recognition is essential to many vision tasks. In contrast to the classification-based approaches [1, 2], we directly formulate the keypoint recognition as an image patch retrieval problem, which enjoys the merit of finding the matched keypoint and its pose simultaneously. A novel convolutional treelets approach is proposed to effectively extract the binary features from the patch...
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ژورنال
عنوان ژورنال: Advances in Data Science and Adaptive Analysis
سال: 2019
ISSN: 2424-922X,2424-9238
DOI: 10.1142/s2424922x19500062