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Nowadays many clustered file systems adopt asynchronous encoding which transforms replicated data into erasure coding to maintain data availability with bounded storage overhead. Existing implementations of asynchronous encoding construct coding stripes with logically sequential data blocks, which suffers from heavy cross-rack traffic and necessitates data block redistribution. Recent work [12] solves...
System scaling becomes essential and indispensable for distributed storage systems due to the explosive growth of data volume. Considering that fault-protection is a necessity in large-scale distributed storage systems, and Cauchy Reed-Solomon (CRS) codes are widely deployed to tolerate multiple simultaneous node failures, this paper studies the scaling problem of distributed storage systems with...
Adaptation refers to the general phenomenon that a neural system dynamically adjusts its response property according to the statistics of external inputs. In response to a prolonged constant stimulation, neuronal firing rates always first increase dramatically at the onset of the stimulation; and afterwards, they decrease rapidly to a low level close to background activity. This attenuation of neural...
A fundamental question in theoretical neuro-science is to answer why neural systems can process information extremely fast. Here we investigate the effect of noise and neuronal collaborative activity on speeding up population decoding. We consider a one-dimensional stimulus encoded by a number of integrate-and-fire neurons. We find that 1) when noise is Poissionian, i.e., its variance is proportional...
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