Skip to content
SocNetV SocNetV
News

pagerank

3 posts with the tag “pagerank”

SocNetV v2.1 Released!

Dimitris

Today is a wonderful day because we are happy to announce that a brand-new version of our favorite social network analysis and visualization software application has been released. SocNetV version 2.1, released on September 28, 2016, has the codename “fixer” and is available for Windows, Mac OS X, and Linux from the Downloads page.

What’s New in SocNetV v2.1?

Faster and More Accurate Network Analysis Computation

  • Improved algorithms for social network analysis allow most metrics to be computed simultaneously. The results are saved and reused during the session, recalculating only when nodes, edges, or weights are modified.
  • Fixed metrics like PageRank Prestige (PRP) and Average Graph Distance (AGD) now produce accurate results.

New d-Regular Random Network Generator

  • The d-regular network generator has been rewritten and now generates both directed and undirected d-regular random networks without errors.

Improved UCINET Format Support

  • Fullmatrix format is now supported again. SocNetV already supports the edgelist format, ensuring compatibility with more datasets.

Better Network Visualization

  • Fixed issues with node and edge stacking on the canvas.
  • Corrected the display of edges with large weights to prevent overly thick lines.

Bug Fixes

  • #1624561: Network files with both arcs and edges are loaded as solely undirected nets.
  • #1622889: The d-regular generator does not produce random networks.
  • #1623812: After loading a new network file, the app behaves as if the network has changed.
  • #1624583: UCINET .dl files crash the app.
  • #1624750: Random new nodes can be drawn out of the canvas.
  • #1625831: Removing an edge in undirected graphs does not update the node outDegree.
  • #1627390: Wrong PageRank Prestige results in undirected nets.
  • #1627721: Incorrect average graph distance metric in disconnected networks.
  • #1628382: Edges with very large weights are drawn with huge line widths.
  • #1627213: Crashes when double-clicking on a target node after deleting the source node.
  • #1628170: Edge labeling with HTML special characters breaks GraphML files.
  • #1622891: Highlighted edges should have a larger z-index.
  • #1624352: The “Change Edge Color” dialog does not display the current edge color.
  • #1624360: Default edge color and node shape are incorrect in Edit menu dialogs.
  • #1628395: Incorrect z-value of nodes and edges caused cluttering.

Download SocNetV v2.1 today and, as always, have fun with your social network analysis projects!

SocNetV v1.9 released - Bug Fixes and Speed Increase

Dimitris

The Social Network Visualizer project has just released version 1.9, which fixes many important bugs and brings a faster matrix inverse routine. Source code, Windows zipped executables, Mac OS image, and binary packages for major Linux distributions are as always available from the Downloads page.

Key Improvements

  • Faster Matrix Inverse Routine:
    The matrix inverse algorithm now uses LU decomposition, greatly improving computation speed. This enhancement also affects the Information Centrality algorithm, which now runs in 1/10th of the time required in earlier SocNetV versions.

  • Revamped PageRank Prestige Algorithm:
    Up to version 1.8, the PageRank algorithm used the original Page & Brin formula, leading to different results. Starting from this version, SocNetV uses the correct formula and computes comparable results. Additionally, the initial PageRank score of each node is now set to 1/N.

Closed Bugs in Version 1.9

  • #1463069: Wrong average distance when there are isolates.
  • #1365037: Certain sparse matrices crash SocNetV on the invertMatrix method.
  • #1365582: CentralityInformation() is slow when network size (N > 100).
  • #1463095: Edge filter works but the user cannot undo.
  • #1464422: Incorrect PageRank results.
  • #1464430: SocNetV refuses to read Pajek files not starting with *Network.
  • #1465774: Edges do not always follow relations.
  • #1463082: Edge color change does not take effect.
  • #1464418: SocNetV crashes during PageRank computation on isolated nodes.

With these enhancements and fixes, SocNetV v1.9 ensures faster and more reliable performance for your social network analysis tasks.

SocNetV 1.0 Released

Dimitris

SocNetV version 1.0 has just been released! This milestone marks the first version built on the new Qt5 toolkit, introducing exciting features and improvements.

Highlights

  • PageRank Calculation and Layout: Analyze networks using the popular PageRank algorithm.
  • Bug Fixes: Enhanced stability and performance.

Downloads

Source code is available on the Downloads page.

Experience the enhanced features and performance of SocNetV 1.0!