# Network Theory- 16 Robustness & Resilience

Robustness and resilience are often defined in terms of a system’s capacity to maintain functionality in the face of external perturbations. In this model we give an overview to network robustness looking at what happens when we remove links and node, both strategically and randomly

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Transcription excerpt:

Robustness & resilience are often thought of in terms of a systems capacity to maintain functionality in the face of external perturbations. We see some extraordinary example of this, ecological networks that persist despite extreme environmental changes, Communication networks like the internet can often deal with malfunction, errors and attacks, without these local events lead to catastrophic global failures, but we also see the opposite where some small failure in say a financial system can propagate to affect the whole systems. Trying to understand how and why this happens is the study of network robustness.

Robustness can be correlated with connectivity in that connectivity enables system integration, as we previously noted without connectivity parts to the system may become disconnected and disintegrated. If blood stops flowing to some part of the body then it will become atrophied and waste away or if a child stops talking to their parents then the family unit disintegrates through lack of communications. Thus when we are talking about robustness & resilience we are often…

- Kind: Short
- Year: 2015
- Runtime: 8 min
- By: Complexity Academy
- Genres: Science
- Archive: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Network_Theory-_16_Robustness_%26_Resilience.webm)
- Licence or status: [CC BY 3.0](https://creativecommons.org/licenses/by/3.0) (as the archive states it)
- Credit: Complexity Academy
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/commons/57997288?play=1)