one. The second one locks the thread from being killed during explaining and from changing thread data. The new mutex is called LOCK_query_plan and used only for explaining purposes. It guards tree variables - JOIN *SELECT_LEX::join, JOIN_TAB *JOIN::plan, THD::modification_plan. All subq...
We used generalised linear mixed-effects models (GLMM) to analyse the distribution of decay cavities in trees using data on their presence/absence, based on several tree individual attributes, across different sites. We applied an information-theoretical and multi-model inference approach to quantify ...
For example, starting in MongodB 4.2, the following aggregation operation can be fulfilled by the tree of query plan execution rather than using the aggregation pipeline. db.example.aggregate([{$match:{someFlag:true} } ] ) The field is only present if the value istrueand only applies to ...
Step 2 - The SQL statement is sent to the command parser, where it goes through syntactic and semantic analysis, and a query tree is generated afterward. Step 3 - The query tree is sent to the optimizer. The optimizer creates an execution plan. Step 4 - The execution plan is sent to ...
We can now use fmap on Tree data structures:λ> fmap toSeverity statusTree Node (Leaf Low) (Node (Leaf High) (Leaf Middle)) λ> :type it it :: Tree SeverityAs already described above, fmap maintains the tree structure unchanged but converts the type of each Leaf element, which ...
Accordingly, the number of connections in comparison with the minimum spanning tree is low, there is a low number of triangles in the network and they do not tend to share vertices. The instances of roads and power networks that have similar values for the second principal component have a ...
a pioneer tree species used in alpine ecosystem conservation, is widely distributed on the eastern Tibetan Plateau, China36. As a dioecious plant,S. paraplesiashows a female-biased sex ratio as well as sexually differentiated responses to abiotic stresses37. We assumed that these ecological and ...
309-321, 10.1016/j.tree.2021.11.013 View PDFView articleView in ScopusGoogle Scholar Peters et al., 2022 B. Peters, A. Keller, S.D. Leonhardt Diets maintained in a changing world: does land-use intensification alter wild bee communities by selecting for flexible generalists? Ecol. Evol.,...
Example tree structure of a rumor cascade. Full size image IRB approval was received from ETH Zurich (2020-N-44). The above data collection results in a large-scale dataset on online rumors. Fact-checking Our data sample comprises a comprehensive set of Twitter cascades that were subject to ...
Different tools and approaches are being developed for this purpose, for example using visualisation to make linear regression models easy and quick to understand, and matching decision tree models to provide a systematic description of the model’s behaviour29,30,31,32. In cognitive neuroscience, ...