Exponential Smoothing of Time Series Data in R
Posted by Armando Brito Mendes | Filed under Sem categoria
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Alisamento exponencial com o pacote expsmooth do R
This article is not about smoothing ore into gems though your may find a few gems herein.
Systematic Pattern and Random Noise
In “Components of Time Series Data”, I discussed the components of time series data. In time series analysis, we assume that the data consist of a systematic pattern (usually a set of identifiable components) and random noise (error), which often makes the pattern difficult to identify. Most time series analysis techniques involve some form of filtering out noise to make the pattern more noticeable.
Wi-fi revealed
Posted by Armando Brito Mendes | Filed under Sem categoria, visualização
Mostrar o invisivel como as ondas eletromagnéticas criadas pelo wi-fi
Digital Ethereal is a project that explores wireless, making what’s typically invisible visible and tangible. In the piece above, a handheld sensor is used to detect the strength of Wi-Fi signal from a personal hotspot. A person waves the sensor around the area, and long-exposure photography captures the patterns.
Reminds me of the Immaterials project from a while back, which used a light stick to represent signal strength rather than a signal light.
Tags: belo
