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Questions tagged [topology]

Topology is the mathematical study of the properties that are preserved through deformations, twistings, and stretchings of objects. Tearing, however, is not allowed. A circle is topologically equivalent to an ellipse (into which it can be deformed by stretching) and a sphere is equivalent to an ellipsoid.

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Optimizing a Cypher query to analyze topology in a network

I have a network (e.g. a water network) and I want to find topological structures : clusters (circular paths), bridges (relationships that connect clusters) and trees (the remaining). The Cypher statement to create the example network is…
Graphileon
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This user's topologies are in danger of being unscheduled due to the owner's over-use of cluster resources

We are in the process of upgrading Storm version from 1.x.x to 2.1.0, and were able to bring up the Storm cluster, and it's running fine so far, with just one topology. We see a new owner section in the Storm UI, with the following message in red…
Pavithra Gunasekara
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Assign memory for individual worker in storm

I need to assign different values of memory for each new worker. So I tried changing memory for each bolt and spout. I am currently using a custom scheduler also. Here is my approach to the problem. MY CODE: TopologyBuilder builder = new…
Eranga Heshan
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How to accomplish topology with OpenNMS

I want to use OpenNMS and test Linkd layer 2 iso/osi model network topology discovery. But I can't find linkd daemon after starting OpenNMS, and there is no configuration file linkd-configuration.xml. The instruction page is…
hel
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network topology

I'm trying to build an application that would display network topology, using c or maybe c++. I have knowledge of sockets. I know this a broad question with little details. It's just that i haven't found anything to start from. I have no idea what…
gvalero87
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Envelope Algorithm Optimization -- Best Place to Put a Circle

I have to solve the following problem in an optimal way. Input data is: N points in a plane given as a (x, y) pair of integer coordinates M points in the same plane given as a (x, y) pair of integer coordinates representing the center of a circle.…
Terminus
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Why is it called topological sort?

From where does it derive its meaning: 1) Topography, as in region, geography etc. OR 2) From one of its mathematical meanings: the set of all open subsets of a topological…
ChrisOdney
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Recognizing a topological graph in a noisy image

I am not at all experienced with machine learning or image processing, so I'm hoping someone can give some pointers of first thoughts on this problem: The image below is an example of a photograph of tomato plant leaf. We have thousands of these. We…
gmoss
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In search of an algorithm for sorting collection in nodes to satisfy a layout constraint

Firstly, I apologize for the poor title; I cannot think of a good name for this algorithm. I have an ordered list of stages. Each stage has a cast of characters, unordered. Characters can occur in multiple stages. A crossing occurs when two…
Corbin
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How to convert a polygon to a set on non-overlapping triangles?

I have a coordinate set of 2D points that form a closed polygon. I need to generate a set of 2D triangles that distribute the polygon completely. There are no constrains as such except that the triangles should fill the area of polygon completely.…
shobhit
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Benefit of running Storm under supervision, example/sample code

I have installed the storm correctly. But, I am struggling how to run an example on storm. Can anyone please give me the link or suggestion by which I can execute the example?Also, what are the benefit of running storm under supervision?
user1234
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Flexagon Simulation

What is the best way to simulate a flexagon? My best guess at a starting point is to represent the faces and edges, and simulate transformations based where edges meet. I'm thinking that in the process of implementing a transformation, it will be…
mdashx
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How to force a multihopping topology with xbee zb?

I use some xbee (s2) modules with zb stack for mesh networking evaluation. Therefore a multi hopping environment has to be created. The problem is, that the firmware handles the association for themselves and there is no way deeper into the stack as…
Tobias Junge
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LINQ features in Ruby

I would like to write a code in Ruby that behaves like this C# code. It receives a candidate topology set and a world set, and tests if the candidate topology is a topology in respect to the world. In C# using LINQ features it looks like…
Kobi
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Creating a manifold and project it onto a higher dimension in julia

I'm very new to topology. Suppose I want to create a 1/2/3 dim manifold, and project it onto a 10 dimensional space. How should I do that? I went through the website https://juliamanifolds.github.io/Manifolds.jl/v0.1/interface.html# And my current…
Joe
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