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In natural language processing , latent Dirichlet allocation (LDA) is a generative model that allows sets of observations to be explained by unobserved groups that explain why some parts of the data are similar.
Richard B. Darlington
By CARI TUNA Is the current economic slump worse than the recession of the early 1980s? Measured by unemployment, the answer appears to be no, or at least not yet. The jobless rate was 10.2% in October, compared with a peak of 10.8% in November and December of 1982. But viewed another way, the current recession looks worse, not better.