Results 31 to 40 of about 1,291,628 (288)
Columnar Storage and List-based Processing for Graph Database Management Systems [PDF]
Proceedings of the VLDB Endowment, 2021 We revisit column-oriented storage and query processing techniques in the context of contemporary graph database management systems (GDBMSs).
Pranjal Gupta +2 more
semanticscholar +1 more source
Discrete Random Walks on One-Sided ``Periodic'' Graphs [PDF]
Discrete Mathematics & Theoretical Computer Science, 2003 In this paper we consider discrete random walks on infinite graphs that are generated by copying and shifting one finite (strongly connected) graph into one direction and connecting successive copies always in the same way.
Michael Drmota
doaj +1 more source
Alice and the Caterpillar: A more descriptive null model for assessing data mining results [PDF]
Industrial Conference on Data Mining, 2022 We introduce novel null models for assessing the results obtained from observed binary transactional and sequence datasets, using statistical hypothesis testing.
Giulia Preti +2 more
semanticscholar +1 more source
Zero-Sum Magic Labelings and Null Sets of Regular Graphs [PDF]
The Electronic Journal of Combinatorics, 2014 For every $h\in \mathbb{N}$, a graph $G$ with the vertex set $V(G)$ and the edge set $E(G)$ is said to be $h$-magic if there exists a labeling $l : E(G) \rightarrow\mathbb{Z}_h \setminus \{0\}$ such that the induced vertex labeling $s : V (G) \rightarrow \mathbb{Z}_h$, defined by $s(v) =\sum_{uv \in E(G)} l(uv)$ is a constant map.
Akbari, Saieed +2 more
openaire +2 more sources
Evaluation of repair bond strength with different methods for zirconia restorations
Bulletin of the National Research Centre, 2022 Background The aim of the study is to assess the bonding of two repair methods for zirconia. Null hypothesis Repair of zirconia with Cojet (3M Cojet sand, 68,411) and clearfil (clearfil REPAIR Kuraray Japan) has the same effect on the bond strength of ...
Rami M. Galal +2 more
doaj +1 more source
Testing network autocorrelation without replicates.
PLoS ONE, 2022 In this paper, we propose a portmanteau test for whether a graph-structured network dataset without replicates exhibits autocorrelation across units connected by edges. Specifically, the well known Ljung-Box test for serial autocorrelation of time series
Kwun Chuen Gary Chan +3 more
doaj +1 more source
Assessing statistical significance in causal graphs
BMC Bioinformatics, 2012 Background Causal graphs are an increasingly popular tool for the analysis of biological datasets. In particular, signed causal graphs--directed graphs whose edges additionally have a sign denoting upregulation or downregulation--can be used to model ...
Chindelevitch Leonid +4 more
doaj +1 more source
Frontiers in Psychology, 2020 Graphs are useful tools to communicate meaningful patterns in data, but their efficacy varies considerably based on the figure’s construction and presentation medium. Specifically, a digital format figure can be dynamic, allowing the reader to manipulate
Jeffrey Chase Hood +2 more
doaj +1 more source
PLoS ONE, 2022 We evaluated the performance of cardiac arrest-specific prognostication scores developed for outcome prediction in the early hours after out-of-hospital cardiac arrest (OHCA) in predicting long-term outcomes using independent data.
Wan Young Heo +9 more
doaj +1 more source
Complete Multipartite Graphs and their Null Set
Electronic Notes in Discrete Mathematics, 2014 Abstract For every natural number h, a graph G is said to be h-magic if there exists a labelling l : E ( G ) → Z h \ { 0 } such that the induced vertex set labelling l + : V ( G ) → Z h defined by l + ( v ) = ∑ u v ∈ E ( G ) l ( u v ) , is a constant map.
S. Akbari, S. Bahramian
openaire +1 more source