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-1
votes
2answers
196 views

Determine Cluster Label in K-means

I have dataset that is contain 150 data that is actually divided into 3 group. Each group has it’s own label. I do clustering process with K-means algorithm to group the data. I need to assign the ...
4
votes
1answer
45 views

Master-Slave Cluster - How to make sure the master is really dead for the slave to take over?

I have a in-house messaging system, similar to a message broker. We have one master message broker and one slave message broker. A message broker just receives messages and sends them to all nodes. ...
1
vote
1answer
280 views

Image segmentation - show or hide clusters

I'm trying to make a small program in c#, that will downsample image to specified amount of colors (using K-means). Then, user will be able to hide\show colored areas(clusters) in image. I've ...
0
votes
1answer
25 views

Message queues: Cluster of “send mail” and analytics consumers, ensure dispatch to only one mail-consumer and only one analytics-consumer

It seems there's lots of ways to create a task queue where something like a round-robin algo rotate tasks between consumers, but say I have a user queue, and I want to both send a welcome mail and do ...
2
votes
0answers
271 views

How to deal with runtime changes to tenant-location in a clustered, multitenant web application with app-managed datasources?

I have a Java web application that supports multi-tenancy to keep customer data separate. Connection pools to each customer database are created at runtime. The details of each customer shard (...
1
vote
0answers
65 views

Should mongoDB be run in a cluster?

I'm trying to implement an architecture that's similar to the coreos's production architecture (shown below) Should I run the database as a central service or one or more of the workers? I figured ...
1
vote
0answers
92 views

handling external events in a cluster environment

I have an app written with JSF and Spring using JPA+Hibernate which is running on a Glassfish4 server. Right now I have an Observer pattern which is listening for some Postgresql events. Let`s say ...
0
votes
0answers
20 views

efficient graph clustering algorithm for weighted directed graphs based on node and edge weights

I'm looking for an algorithm to cluster weighted directed graphs that have weights on both edges and vertices. I'm using graphs with multiple weights(labels) on vertices and a weight on edges that ...
0
votes
0answers
21 views

What are some ways to go about automatically categorizing calendar data?

I'm working on an application that takes as input your calendar data (i.e. the event titles like "Lunch with Barney" and their respective times), and automatically assigns each of them to a category ...
0
votes
0answers
66 views

algorithm for group reassignment of points

I have a list of clustered points but they are not in the cluster which has the center closest to them. The objective is to reassign them to minimize the total distance of each point to its cluster ...
0
votes
0answers
89 views

Session Management in distributable web-apps

I am working on a huge web application in which I need to add transparent failover feature. I understand the necessary steps to make a web application distributable, the most difficult thing being: to ...
0
votes
0answers
418 views

Embedded Tomcat Cluster

Can someone please explain with an example how an Embedded Tomcat Cluster works. Would a load balancer be necessary? Since we're using embedded tomcat, how would two separate jar files (each a ...