Is anyone aware of an existing way to execute a modularity (community detection) algorithm on a Titan graph? I'm looking for something like Gephi's modularity feature which I believe uses https://sites.google.com/site/findcommunities/.
The Gephi Toolkit appears to provide an implementation of this algorithm, which could be an option. Has anyone experimented with loading a Titan graph using the Gephi Toolkit via the Blueprints plugin?
One requirement is that this all needs to happen automatically and in-place. Meaning, I cannot export the graph as another format or manually run modularity detection using something like the Gephi Desktop Application.
Perhaps this doesn't exactly answer the question, but for Blueprints-enabled graphs like Titan, the best option for doing this type of analysis is through Furnace. Though Furnace is still under development there is a clustering algorithm present as an example:
https://github.com/tinkerpop/furnace/blob/master/src/main/java/com/tinkerpop/furnace/algorithms/vertexcentric/programs/clustering/PeerPressureVertexProgram.java
Sounds like this just doesn't exist yet.
https://groups.google.com/forum/#!searchin/aureliusgraphs/modularity/aureliusgraphs/iS4Wj7XZjp8/TkFMyFDAclkJ
I ended up using the gephi toolkit and writing some REALLY ugly wrapper hacks to utilize the Modularity class with a TitanGraph.
Related
Is there any thing that can generate a sequence diagram between actors in akka?
Or any kind of diagram in akka?
I use sbt 0.13.13 with scala 2.11.8, akka 2.4.16
The idea of general visualization of akka actors (mailboxes) is quite fresh, so there is not much in terms of existing frameworks for it. The one I came around and seemed closest to kind of general solution was akka-visualmailbox.
They also have sample project and comprehensive installation instructions in README.
The best part of this one is that it does not require code changes.
Another one that does is akka-message-visualization however I did not see any simple setup guides out there for it.
Use Lightbend Telemetry Visualization tools
Specially look into Vizceral Visualization tool
I'm currently building one called Muse, it's still in early stages, but I have already begun using it at the office. You can select one or more messages and generate a sequence diagram from them.
I asked a similar question to Anylogic linkedin forum so sorry for multiple posting (possibly for some of you). I just heard about the Anylogic program. My purpose is not simulation I want to visualize a log file. I want to allow the admin-user (who will be the user of the Anylogic model) to enter some settings which will cause some filtering and I want to visualize the whole file with Anylogic.
The file is a communication file. Possibly I will show communication attendees and interactions using Anylogic. I want to emphasize unnormal patterns in the log using visual and interactive properties of Anylogic. There may also some need for like zooming in and out during the execution of the model.
Is it something very difficult to do? I am a Java developer. I can understand that I should have to learn Anylogic. What other skills and development and test environments (Ide etc.) do I need?
I plan to do a serial of implementations for several log file types and currently I am trying to find the best tool which will allow me to make changes in visualization part of the models easily till I find the best representation of the data.
There are some examples of Anylogic which are installed built-in but I couldn't see an example which suits my situation. I do not know where to start. If someone helps me to start the design I would be very happy :)
Thank you for your attention..
Edit:
I am attaching a sample stereoscopic view model and a sample view. I want to do something similar to this. Is it ok with AnyLogic?
Ferda
simple answer: yes its possible.
Some more comments:
I am currently working on a very similar project actually. For me as an experienced AnyLogic user, it is very natural and AnyLogic offers all the features you ask for.
Is it something very difficult to do?
That depends on how quickly you can learn AL. But if you are experienced with Java, it will not be too hard, I imagine.
What other skills and development and test environments (Ide etc.) do I need?
None, really. You need to figure out how to use the visual elements of AL. All of them can be changed statically via the AL IDE but you can always change them dynamically via Java code. That is very important to realize and play around with.
I am attaching a sample stereoscopic view model and a sample view. I want to do something similar to this. Is it ok with AnyLogic?
Yes, that can be done.
I suggest you try checking the example models that come with AL. If you find something that looks like what you need, try to figure out how they did it. Then try to recreate it in a simple example model for yourself.
I am using rexster on top of Titan to visualize the graph. I could view the vertices and get the edges for each of them. But, how can i view complete graph from Titan instead of just getting details for each vertex.? I will have thousands of vertices and edges. If i have to view them for each vertex, it will be really tough. Pleas let me know, if there is a way to visualize whole graph.
Rexster's user interface isn't designed to visualize an entire graph. In fact, you will find that when graphs get sufficiently large, viewing the whole graph just isn't possible (or useful). For now though, let's set memory/usability issues aside to answer your question. You will want to use a different graph visualization tool, like Gephi or Cytoscape to visualize your graph. Both of those tools (and others you will find) can take GraphML as an input and using TinkerPop's Reader/Writer classes you can output your graph to that format.
You asked about Rexster so I assume that you were using TinkerPop 2.x and Titan versions prior to 1.0. If you were using Titan 1.0 (and thus TinkerPop 3.x), you could use the Gephi Plugin for the Gremlin Console to help make the integration more seamless.
Most user interface patterns have a performance issue at about the same time they have a usability issue. Developers who ask "how can I stop my 100,000 element drop down list from being so slow" may be missing the point that such a drop down list is useless for an end user, and instead should switch to a different paradigm, such as a typeahead search.
Similarly, once your graph has more than a few hundred vertices in it, visualizing it in its entirety is nearly impossible. You must move to viewing aggregate statistics, simplified versions of the graph, or much more impressionistic sketches that are really only good for seeing clusters.
We are a group of students of chemical engineering mostly proficient in MATLAB and Simulink but with almost no clue of web programming.
Our idea is to develop some online examples by using interactive graphics with dynamic effects and 2D/3D simulations. We know that MATLAB has some solutions but the compilers are not available for the student version. Furthermore, we want to promote the use of free open source alternatives (SciLab, Octave, NumPy)
Ideally, we would like to use a 4GL which includes a free library for numeric analysis and combine it with graphic user interface framework for web applications.
An good example will be Easy Java Simulations that generates java code and can be easily implemented online. However, we are looking for something that can be executed without java or another plugin (see google chart tool)
Although we are willing to learn (Python, Java), we would like to start with the easiest solution towards a painless transition for a chemical engineer ;)
We will really appreciate our recommendations and suggestions!
Your best shot is to buy the product Matlab Builder NE. You can use WebFigures to seamlessly create web applications from your Matlab application.
We need to visualize BP (business process) into BPMN, but NOT by hands using modeler. We need to do it automatically in crm-web-based system written on PHP. I have input data (etc. array, xml, not care...(but not BPEL)), then I need to process it into nice BPMN graph (using SVG).
We have first nice-looking realization of it. We use matrix to draw: several times goes through matrix and optimize graph each time, no no, it working fast, but it not agile, hard to rebuilt, upgrade, add new features... We made this algorithm by ourselves (I mean we didn't find it in google or books). Problem is that we couldn't find any algorithms in the internet. I suppose we don't know correct keywords to do it. Every try returned us to BPEL vis. from BPMN, "Data flow vis." returned modelers...
Please help us to find some algorithms, or give correct keywords to find out information.
Think you're probably looking for "graph layout algorithms". The only library I'm aware of that can (I think) generate BPMN directly is the yFiles library from yWorks. It's not free. They do however offer a free application using the library that does auto-layout. Perhaps you could do some prototyping with that.
If that's not applicable, there are several other options. I'm not aware any of these can generate BPMN symbols directly; you'd have to construct the symbols. However all will auto-layout graphs according to various algorithms. Also all open source/free.
graphviz. Written in C. Quite old now but well used, stable and scalable.
tulip. Newer than graphviz. Haven't used it but heard good things about flexibility and scalability.
see also this post for javascript based options.
There are many more, just google for graph layout algorithms / libraries.
hth.