A bidirectional map (BidiMap), also called a hash bag, is an associative data structure in which the key-value pairs form a one-to-one relation. This relation works in both directions by allow the value to also act as a key to key, e.g. a pair (a,b) thus provides a coupling ...
This in turn requires an effective storage structure. In this paper, an efficient data storage mechanism for itemset storage, the T-tree, is described. The paper also considers data preprocessing and describes the P-tree, which is used to perform a partial computation of support totals. The ...
Expression treesrepresent code in a tree-like data structure, where each node is an expression, for example, a method call or a binary operation such asx < y. If you used LINQ, you have experience with a rich library where theFunctypes are part of the API set. (If you aren't familia...
First, we show how the recursive checksum procedure can be applied to tree data structures that are dynamically changing, whereas the previous work concentrated on trees that were static in their structure. This results in a asymptotic improvement in running time for applications where it; is ...
represents an upper bound for the number of tips contained in each partial matrix. Letnbe the total number of taxa,nithe number of tips in a partial matrix, whereni≤mandn=∑i=0kni. From each partial matrix, we extract an amount of clusters proportional to its size, that is,ci∝c×...
A bidirectional map (BidiMap), also called a hash bag, is an associative data structure in which the key-value pairs form a one-to-one relation. This relation works in both directions by allow the value to also act as a key to key, e.g. a pair (a,b) thus provides a coupling ...
Keyword-based search in relational database is an easy and effective way for ordinary users or Web users to access relational databases. Even though relati... MM Thein - IEEE 被引量: 5发表: 2012年 Method and apparatus for representing a group hierarchy structure in a relational database A ...
Broad-leaved trees are widely distributed from tropical to temperate zones in China, reference collections of phytoliths from these taxa are crucial for the precise reconstruction of paleoenvironments and the study of early plant resource exploitation. However, not much has been published on the phyto...
This study presents a new method of detecting individual treetops from lidar data and applies marker-controlled watershed segmentation into isolating individual trees in savanna woodland. The treetops were detected by searching local maxima in a canopy maxima model (CMM) with variable window sizes. Dif...
Adapting to Concept Drift in Credit Card Transaction Data Streams Using Contextual Bandits and Decision Trees (AAAI 2018) Dennis J. N. J. Soemers, Tim Brys, Kurt Driessens, Mark H. M. Winands, Ann Nowé [Paper] MERCS: Multi-Directional Ensembles of Regression and Classification Trees (AAAI...