Figure 3.

The linear scaling relationship between<a onClick="popup('http://www.epjdatascience.com/content/1/1/2/mathml/M55','MathML',630,470);return false;" target="_blank" href="http://www.epjdatascience.com/content/1/1/2/mathml/M55">View MathML</a>and<a onClick="popup('http://www.epjdatascience.com/content/1/1/2/mathml/M64','MathML',630,470);return false;" target="_blank" href="http://www.epjdatascience.com/content/1/1/2/mathml/M64">View MathML</a>of topic ‘Kim Chul Hee’, a Korean pop star. The number of records that have occurred up to time t scales linearly with <a onClick="popup('http://www.epjdatascience.com/content/1/1/2/mathml/M56','MathML',630,470);return false;" target="_blank" href="http://www.epjdatascience.com/content/1/1/2/mathml/M56">View MathML</a>.

Wang and Huberman EPJ Data Science 2012 1:2   doi:10.1140/epjds2
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