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Próxima revisión | Revisión previa | ||
proyectos:tfg:bibliografia:flack2017 [2017/10/27 09:03] 127.0.0.1 editor externo |
proyectos:tfg:bibliografia:flack2017 [2018/05/25 16:44] (actual) Joaquín Herrero Pintado |
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- | ====== Flack, J., Life’s Information Theory ====== | + | ====== Flack, Jessica, Life’s Information Theory (2017) ====== |
- | en mari Walker, S. (ed), 2017, From Matter to Life – Information and Causality | + | en Smari Walker, S. (ed), 2017, From Matter to Life – Information and Causality |
+ | |||
+ | I propose that biological systems are information hierarchies organized into | ||
+ | multiple functional space and time scales. This multi-scale structure results | ||
+ | from the collective effects of components estimating, in evolutionary or | ||
+ | ecological time, regularities in their environments by coarse-graining or | ||
+ | compressing time-series data and using these perceived regularities to tune | ||
+ | strategies. As coarse-grained (slow) variables become for components better | ||
+ | predictors than microscopic behavior (which fluctuates), and component | ||
+ | estimates of these variables converge, new levels of organization consolidate. | ||
+ | This process gives the appearance of downward causation – as components | ||
+ | tune to the consolidating level, variance at the component level decreases. | ||
+ | Because the formation of new levels results from an interaction between | ||
+ | component capacity for regularity extraction, consensus formation, and how | ||
+ | structured the environment is, the new levels, and the macroscopic, slow | ||
+ | variables describing them, are characterized by intrinsic subjectivity. Hence | ||
+ | the process producing these variables is perhaps best viewed as a locally | ||
+ | optimized collective computation performed by system components in their | ||
+ | search for configurations that reduce environmental uncertainty. If this view | ||
+ | is correct, identifying important, functional macroscopic variables in | ||
+ | biological systems will require an understanding of biological computation. I | ||
+ | will discuss how we can move toward identifying laws in biology by | ||
+ | studying the computation inductively. This includes strategy extraction from | ||
+ | data, construction of stochastic circuits that map micro to macro, dimensionreduction | ||
+ | techniques to move toward an algorithmic theory for the | ||
+ | macroscopic output, methods for quantifying circuit collectivity, and | ||
+ | macroscopic tuning and control. |