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How to keep the HG weights non-negative : the truncated Perceptron reweighing rule

Magri G.

Journal of Language Modelling

2015

Vol. 3, No. 2

345--375

The literature on error-driven learning in Harmonic Grammar (HG) has adopted the Perceptron reweighing rule. Yet, this rule is not suited to HG, as it fails at ensuring non-negative weights. A variant is thus considered which truncates the updates at zero, keeping the weights non-negative. Convergence guarantees and error bounds for the original Perceptron are shown to extend to its truncated variant.