Results 11 to 20 of about 1,098,598 (262)

Estimation of Structural Diversity of Acer campestre Stands by using of Complexity Structural Diversity Index in Arasbaran Forest [PDF]

open access: yesZīst/shināsī-i Giyāhī-i Īrān, 2019
Measuring the forest structural diversity is a useful and important way to predict the growth and the future development activities of the forest stands.
Roya Abedi
doaj   +1 more source

The structure of the Emotions Profile Index [PDF]

open access: yesPsihologija, 2006
In order to evaluate the factor structure of the Emotions Profile Index (EPI) 217 first-year students accommodated in the school’s dormitory were examined.
Kurbalija Dragan
doaj   +1 more source

Adaptive Index Structures [PDF]

open access: yes, 2002
Traditional indexes aim at optimizing the node accesses during query processing, which, however, does not necessarily minimize the total cost due to the possibly large number of random accesses. In this paper, we propose a general framework for adaptive indexes that improve overall query cost. The performance gain is achieved by allowing index nodes to
Yufei Tao 0001, Dimitris Papadias
openaire   +1 more source

Supervised Machine Learning for Refractive Index Structure Parameter Modeling

open access: yesQuantum Beam Science, 2023
The Hellenic Naval Academy (HNA) reports the latest results from a medium-range, near-maritime, free-space laser-communications-testing facility, between the lighthouse of Psitalia Island and the academy’s laboratory building. The FSO link is established
Antonios Lionis   +5 more
doaj   +1 more source

A blockchain index structure based on subchain query

open access: yesJournal of Cloud Computing: Advances, Systems and Applications, 2021
Blockchain technology has the characteristics of decentralization and tamper resistance, which can store data safely and reduce the cost of trust effectively.
Xiaogang Xing   +4 more
doaj   +1 more source

QML: a hybrid spatial index structure

open access: yesTongxin xuebao, 2021
In order to enrich the functionalities of existing learned multidimensional indexes and improve the efficiency, the dynamic data segmentation algorithm DDSA was proposed, which could preserve the data distribution characteristics.A hybrid spatial index ...
Dong CUI   +3 more
doaj   +2 more sources

Geodesics of the Structural Similarity index

open access: yesApplied Mathematics Letters, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dominique Brunet   +3 more
openaire   +1 more source

Cuckoo index [PDF]

open access: yesProceedings of the VLDB Endowment, 2020
In modern data warehousing, data skipping is essential for high query performance. While index structures such as B-trees or hash tables allow for precise pruning, their large storage requirements make them impractical for indexing secondary columns.
A. Kipf (Andreas)   +4 more
openaire   +3 more sources

BITMAP INDEX: A DATA STRUCTURE FOR FAST FILE RETRIEVAL [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2008
Bitmap structure indexes are usually used in database environments which have large amount of data. Bitmap reduces response time and storage requirements for large database compared to other data structures like B- tree.
Murtadha M. Hamad
doaj   +1 more source

Temporal RDF Model and Index Method Based on Neighborhood Structure [PDF]

open access: yesJisuanji kexue, 2021
Resource description framework (RDF) is a metadata model and information description specification recommended by W3C,which is widely used in various fields.To track changes in RDF data over time,temporal information is introduced into the RDF framework ...
CHEN Yuan-yuan, YAN Li, ZHANG Zhe-qing, MA Zong-min
doaj   +1 more source

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