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- Functional observability and target state estimation in large-scale networksby cxdig (Complexity Digest) on January 8, 2022
Arthur N. Montanari, Chao Duan, Luis A. Aguirre, and Adilson E. MotterPNAS January 4, 2022 119 (1) e2113750119; Observing the states of a network is fundamental to our ability to explore and control the dynamics of complex natural, social, and technological systems. The problem of determining whether the system is observable has been addressed by network control researchers over the past decade. Progress on the further problem of actually designing and implementing efficient algorithms to infer […]
- The Meaning and Origin of Goal-Directedness: A Dynamical Systems Perspectiveby cxdig (Complexity Digest) on January 7, 2022
Francis Heylighen This paper attempts to clarify the notion of goal-directedness, which is often misunderstood as being inconsistent with standard causal mechanisms. We first note that goal-directedness does not presuppose any mysterious forces, such as intelligent design, vitalism, conscious intention or backward causation. We then review attempts at defining goal-directedness by means of more operational characteristics: equifinality, plasticity, persistence, concerted action and negative […]
- Network traits predict ecological strategies in fungiby cxdig (Complexity Digest) on January 7, 2022
C. A. Aguilar-Trigueros, L. Boddy, M. C. Rillig & M. D. Fricker ISME Communications volume 2, Article number: 2 (2022) Colonization of terrestrial environments by filamentous fungi relies on their ability to form networks that can forage for and connect resource patches. Despite the importance of these networks, ecologists rarely consider network features as functional traits because their measurement and interpretation are conceptually and methodologically difficult. To address these […]
- Transition Therapy: Tackling the Ecology of Tumor Phenotypic Plasticityby cxdig (Complexity Digest) on January 6, 2022
Guim Aguadé-Gorgorió, Stuart Kauffman & Ricard Solé Bulletin of Mathematical Biology volume 84, Article number: 24 (2022) Phenotypic switching in cancer cells has been found to be present across tumor types. Recent studies on Glioblastoma report a remarkably common architecture of four well-defined phenotypes coexisting within high levels of intra-tumor genetic heterogeneity. Similar dynamics have been shown to occur in breast cancer and melanoma and are likely to be found across […]
- Magnitude-sensitivity: rethinking decision-makingby cxdig (Complexity Digest) on January 6, 2022
The cover of the January issue of the magazine Trends in Cognitive Sciences shows a human brain composed of a honeybee swarm. The artwork depicts two seemingly distant biological systems that present striking similarities in decision dynamics and properties of information processing. Inspired by the study of house-hunting honeybees, recent research has established that performance in decision-making is affected in predictable ways by the overall goal-relevant magnitude of the alternatives. […]