On Zero-Error Source Coding with Feedback

We consider the problem of zero error source coding with limited feedback when side information is present at the receiver. First, we derive an achievable rate region for arbitrary joint distributions on the source and the side information. When all source pairs of source and side information symbols are observable with non-zero probability, we show that this characterization gives the entire rate region. Next, we demonstrate a class of sources for which asymptotically zero feedback suffices to achieve zero-error coding at the rate promised by the Slepian-Wolf bound for asymptotically lossless coding. Finally, we illustrate these results with the aid of three simple examples

Newspaper Errors: Reporters Dispute Most Source Claims

The article presents a study related to the newspaper errors. Deep probe of disagreements suggests errors are really differences of opinion between sources and reporters. Research on newspaper accuracy has shown that news sources contend that about half the newspaper articles citing them contain at least one mistake, usually a misquote, omission or distorted emphasis. But, most of the half dozen studies which examined errors in newspapers excluded the reporter from the analysis, concentrating almost entirely on the perceptions of news sources. One study which did look at reporter response found that a reporter\u27s focusing on a particular element of a story, considered an extremely newsworthy angle by the reporter, can be considered an error of overemphasis by the source. Reporter-source disagreement over such things as story angle and even whether the reporter considers a source-perceived error to actually be an error has been neglected in past research. This investigation was designed to look at reporter perceptions of error, as well as source perceptions, and to determine some of the causes of error in newspaper stories. The study examines whether error varies by reporter experience, by deadline, and by type of content or length.

Measurement-device-independent quantum key distribution with source state errors and statistical fluctuation

We show how to calculate the secure final key rate in the four-intensity decoy-state MDI-QKD protocol with both source errors and statistical fluctuations with a certain failure probability. Our results rely only on the range of only a few parameters in the source state. All imperfections in this protocol have been taken into consideration without any unverifiable error patterns.Comment: Published in PRA in March 2017. We present general results for MDIQKD with both intensity error of source and statistical fluctuatio

Consumer Surplus Estimates and the Source of Regression Error

Contrary to widely held belief, we show that the source of regression error does not matter when calculating Marshallian surplus. A misspecified demand curve, not the assumed source of regression error, leads to differences in estimates of consumer surplus.Regression Error, Marshallian Surplus, Welfare Analysis, Consumer/Household Economics, D60, C24, Q51,