I know that Red-Black Trees are used for TreeSet.
I'm wondering what is data structure used for TreeMap?
Thanks.
treeset uses treemap internally, so red black tree only
check javadoc for details http://docs.oracle.com/javase/6/docs/api/java/util/TreeMap.html
Related
I have two questions related to ensemble learning for data streams.
If you have used MOA framework, could you please tell me how to change the base learner for a given algorithm. For instance, I want to change it for OnlineAdaBoost, OnlineAdaC2, onlineSMOTEBagging, and OnlineRUSBoost. The base learner for all of these is Adaptive Random Forest and I want it to be Hoeffding Tree. When I click EDIT to change the baseLearner, nothing happens.
The algorithms in Q1 use ARF as baselearner by default, whereas ARF uses Hoeffding Tree as base learner. Can we say that these algorithms indirectly use Hoeffding Tree as base learner? For a comparison, I must use Hoeffding Tree as base learner for these.
https://javadoc.io/static/nz.ac.waikato.cms.moa/moa/2020.12.0/moa/classifiers/meta/imbalanced/OnlineRUSBoost.html
https://javadoc.io/static/nz.ac.waikato.cms.moa/moa/2020.12.0/moa/classifiers/meta/imbalanced/OnlineSMOTEBagging.html
https://javadoc.io/static/nz.ac.waikato.cms.moa/moa/2020.12.0/moa/classifiers/meta/imbalanced/OnlineAdaC2.html
https://javadoc.io/static/nz.ac.waikato.cms.moa/moa/2020.12.0/moa/classifiers/meta/imbalanced/OnlineAdaBoost.html
If more information is required, I can provide it.
Tx.
If you are using MOA GUI, you can right click in configure textbox to change the command. It was hard to find this, but the base learner could be changed manually using this option.
I want to test a Reagent/Re-Frame view by asserting properties of the Hiccup markup it returns. Therefore I need functions that traverse the tree, filter it, or check that certain elements with certain attributes are present.
I can not be the first to have this problem, yet Google wasn't very helpful. Is there a library that does that? If not, how would you, e.g., write a function that traverses the markup and returns a seq of all elements with a certain tag?
I'd be looking at:
Convert the hiccup out to HTML then use HTML selectors to do analysis
Put the tree inside DataScript then use datalog to do analysis
More details here https://juxt.pro/blog/posts/datascript-dom.html
Explore the sea of libraries for data filtering:
https://github.com/noprompt/meander
https://github.com/BrunoBonacci/where
There's a lot of ways of doing this it's hard to suggest a good answer
You can analyze and modify any tree-like data structure using the Tupelo Forest library. Please view the Lightning Talk video and peruse the many live examples.
If you add more detail to your question I can update the answer with something specific.
You can also see this answer.
I am currently working with GraphDB to visualize some data that has a graph nature. I have imported the RDF data into graphDB and actually the graph is pretty nice. The only downside is that every single node is orange.
I was wondering then, if graphDB has some mechanism whereby the color of some nodes could be changed based upon a semantic relationship between them. For example:
<Berners_Lee> <created> <web> .
<Berners_Lee> <works_as_a> <teacher>
If I were to load this onto graphDB all nodes would appear by default in orange. Is there any way I can specify that nodes that are pointed by relationship created appear in blue?
I hope everything is clear. Any help would be much appreciated.
The colors are generated automatically and differentiate the types in one graph, which is their main purpose. Also we do not handle properly the case with multiple types for a node, but we have it in mind. The problem with your data is that all of the subject predicates and objects have no type (which makes them the same type). Here is a small example, based on your data which will produce the desired effect.
<Berners_Lee><created><www>;
<works_as_a><teacher>;
a <Person>.
<teacher> a <Occupation>.
I am looking for a command line tool which can generate function flow diagrams from some textual description (any sort of markup language would do).
The idea is to document the data connections between some components. The resulting diagrams shall resemble the following. This is mostly for own internal doc. so it doesn't really need to generate fancy diagrams. Blocks with annotation, connections with annotation and maybe some notes is definitely sufficient.
http://www.automation.com/images/article/mathworks/MathWorks_Simulink_robot_arm_simulation_model.png
http://www.randservice.com/images/screen2.jpg
Thanks a lot in advance,
Paul
Check out: GraphViz -- It generates graphs out of a list of vertices and edge definitions
Also, check out IPE, a vector drawing program that can create exactly what you want, but it will be a manual process.
I want to know if it is possible to represent a hierarchy of concepts like very simple ontologies in Google Protocol Buffer format? if yes, can someone give me an example?
Protocol Buffer has support for nested types, the link contains an example, which could be used to represent a simple hierarchy; although I'm not sure how useful it would be.