نتایج جستجو برای: tree like structure

تعداد نتایج: 2241874  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1376

فیلتر بانکهای دیجیتال در نوعی از پردازش سیگنال استفاده می شوند که در فشرده سازی صوت با کیفیت بالا، فشرده سازی تصویر، تحلیل سیگنال چند وقفی و فیلترهای وفقی در محیط فرکانس کاربرد دارند. در بسیاری از حالات هم فیلتر بانک بهینه، فیلتر بانکی است که بهره فشرده سازی آن در میان دیگر فیلتر بانکهای هم درجه با همان تعداد کانال ماکزیمم باشد. بهره فشرده سازی خاصیتی است که به آمارگان سیگنال ورودی بستگی دارد. ...

2008
Sumit Kumar Ghosh Joydeb Ghosh Rajat Kumar Pal

In this paper we have developed an algorithm that converts a given k-ary tree, for any k ≥ 3, to its equivalent binary tree structure. The binary tree is generated in O(n) time, for a k-ary tree with a total of n nodes. The algorithm is designed aiming at reducing the height of the constructed binary tree. The constructed tree does not contain any free links in the non-leaf nodes. That means th...

2005
Tomás Skopal Jaroslav Pokorný Václav Snásel

We introduce a method of searching the k nearest neighbours (k-NN) using PM-tree. The PM-tree is a metric access method for similarity search in large multimedia databases. As an extension of M-tree, the structure of PM-tree exploits local dynamic pivots (like M-tree does it) as well as global static pivots (used by LAESA-like methods). While in M-tree a metric region is represented by a hyper-...

Journal: :ISPRS international journal of geo-information 2022

As a basic method of spatial data operation, keyword query can provide meaningful information to meet user demands by searching textual datasets. How accurately understand users’ intentions and efficiently retrieve results from big are always the focus research. Spatial their complex correlation between features not only enrich connotation objects but also bring difficulties efficient recogniti...

Journal: :Discussiones Mathematicae Graph Theory 2003
Bostjan Bresar Wilfried Imrich Sandi Klavzar

Tree-like isometric subgraphs of hypercubes, or tree-like partial cubes as we shall call them, are a generalization of median graphs. Just as median graphs they capture numerous properties of trees, but encompass a larger class of graphs that may be easier to recognize than the class of median graphs. We investigate the structure of tree-like partial cubes, characterize them, and provide exampl...

2010
James Cummings Luis Pereira

Answering a question raised by Luis Pereira, we show that a continuous tree-like scale can exist above a supercompact cardinal. We also show that the existence of a continuous tree-like scale at אω is consistent with Martin’s Maximum.

Journal: :Indonesian Journal of Electrical Engineering and Computer Science 2023

<span lang="EN-US">Machine learning is a cutting-edge technology used for predicting and diagnosing various diseases. Various machine algorithm facilitates the prediction. The decision tree belongs to that performs both classification constructs tree-like evaluate best features. well in prediction of Endometriosis recurrence disease creates an emotional impact women. lump-like structure a...

1999
Kaushik Chakrabarti Sharad Mehrotra

Feature based similarity search is emerging as an important search paradigm in database systems. The technique used is to map the data items as points into a high dimensional feature space which is indexed using a multidimensional data structure. Similarity search then corresponds to a range search over the data structure. Although several data structures have been proposed for feature indexing...

2008
Hanno Hammer

We recast the idea of decision trees as they emerge in Information theory and Complexity theory into a set theoretical language; the result we call tree structures over a given set. We identify all main structural elements of tree structures, the most important of which is the tree function, defined as a sum over certain quantities at every nod in the tree. We show in detail that the minimizati...

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