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March 26, 2012

The birth and death of words

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From the caption for the figure above: "The modern print era shows a marked increase in the death rate of words, which likely corresponds to low fitness, misspelled, and (technologically) outdated words. A simultaneous decrease in the birth rate of new words is consistent with the decreasing marginal need for new words." 

The figure accompanies a new paper, "Statistical Laws Governing Fluctuations in Word Use from Word Birth to Worth Death," which appears in the March 15, 2012 issue of Scientific Reports.

The abstract of the paper:

We analyze the dynamic properties of 10^7 words recorded in English, Spanish and Hebrew over the period 1800–2008 in order to gain insight into the coevolution of language and culture. We report language independent patterns useful as benchmarks for theoretical models of language evolution. A significantly decreasing (increasing) trend in the birth (death) rate of words indicates a recent shift in the selection laws governing word use. For new words, we observe a peak in the growth-rate fluctuations around 40 years after introduction, consistent with the typical entry time into standard dictionaries and the human generational timescale. Pronounced changes in the dynamics of language during periods of war shows that word correlations, occurring across time and between words, are largely influenced by coevolutionary social, technological, and political factors. We quantify cultural memory by analyzing the long-term correlations in the use of individual words using detrended fluctuation analysis.

Read the paper in its entirety here.

[via Language Log]

March 26, 2012 at 12:01 PM | Permalink


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