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The parameter `doTrain (true|false)`

determines whether the tables are constructed or read. The default value is `true`

.

The other parameters accepted by PLSA are:

- index -- the index to use. Default is none.
- numCats -- the number of latent variables (categories) to use. Default is 20.
- beta -- The value of beta for Tempered EM (TEM). Default is 1.
- betaMin -- The minimum value for beta, TEM iterations stop when beta falls below this value. Default is 0.6.
- eta -- Multiplier to scale beta before beginning a new set of TEM iterations. Must be less than 1. Default is 0.92.
- annealcue -- Minimum allowed difference between likelihood in consecutive iterations. If the difference is less than this, beta is updated. Default is 0.
- numIters -- Maximum number of iterations to perform. Default is 100.
- numRestarts -- Number of times to recompute with different random seeds. Default is 1.
- testPercentage -- Percentage of events (d,w) to hold out for validation.
- doTrain -- whether to construct the probability tables or read them in. Default is true.

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