The Appstore killed the Website Star

I was recently trying to buy a train ticket using a Web platform which shall remain nameless for obvious reasons. I have been using the site for years to buy train tickets in advance, and while it …

TechnoLlama
This architecture of #atproto will realistically ensure that there will never be real alternatives to #bluesky. In other words, #atproto only appears to be #decentralized on paper. In practice, it is probably trapped in #centrality.
Bluesky

Bluesky Social
Are You Your Friends’ Friend? Poor Perception of Friendship Ties Limits the Ability to Promote Behavioral Change

Persuasion is at the core of norm creation, emergence of collective action, and solutions to ‘tragedy of the commons’ problems. In this paper, we show that the directionality of friendship ties affect the extent to which individuals can influence the behavior of each other. Moreover, we find that people are typically poor at perceiving the directionality of their friendship ties and that this can significantly limit their ability to engage in cooperative arrangements. This could lead to failures in establishing compatible norms, acting together, finding compromise solutions, and persuading others to act. We then suggest strategies to overcome this limitation by using two topological characteristics of the perceived friendship network. The findings of this paper have significant consequences for designing interventions that seek to harness social influence for collective action.

'Individual-centered Partial Information in Social Networks', by Xiao Han, Y. X. Rachel Wang, Qing Yang, Xin Tong.

http://jmlr.org/papers/v25/23-0005.html

#adjacency #centrality #subgraphs

Individual-centered Partial Information in Social Networks

Calculating different #centrality measures for a street #network takes longer than expected.

#DegreeCentrality is calculated in a few milliseconds. But oh boy. #ClosenessCentrality and #BetweennessCentrality are proper whoppers. For a network of 65 000 nodes, we're talking about 2+ hour calculation times for the closeness centrality, not to mention the betweenness.

Apparently switching to #igraph would provide a speed boost over #networkx but the convenience of #osmnx has won me over.

Our paper introducing a novel centrality measure for multi-layer ecological networks has been featured on the cover of Methods in Ecology and Evolution.
https://besjournals.onlinelibrary.wiley.com/toc/2041210x/2024/15/2
#complexity #networks #ecology #centrality
With Marco Mello and Nastaran Lotfi.

What you have, not who you know: #food-enhanced #social #capital and changes in social #behavioural #relationships in a non-human #primate

#OpenAccess
#RoyalSocietyOpenScience

"Gaining control over a preferential food resource had far-reaching social consequences:
- increase in both #submission & #aggression #centrality
- changes in the socio-demographic characteristics of her agonistic interaction partners
- her #grooming balance shifted in her favour"

https://royalsocietypublishing.org/doi/full/10.1098/rsos.231460

Betweenness Centrality in Spatial Networks: Our latest publication is available online at https://doi.org/10.4230/LIPIcs.GIScience.2023.83.

We analysed how #spatial density of nodes influences betweenness #centrality and provide a generic method for mitigating these effects. #SpatialCentrality

Looking forward to presenting and discussing our findings next Wednesday at #GIScience2023 conference.
#reproducibility: find data and code at https://doi.org/10.5281/zenodo.8125632

#NetworkAnalysis #UrbanAnalytics #GIScience

DROPS - Betweenness Centrality in Spatial Networks: A Spatially Normalised Approach (Short Paper)

Nouvel article de Social Networks sur l'analyse par les #graphes d'œuvres #cinématographiques : "Measuring #centrality in film narratives using dynamic character interaction networks". Avec un peu de #Maths en appendice ! 👍
https://researchgate.net/publication/341040700_Measuring_centrality_in_film_narratives_using_dynamic_character_interaction_networks