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\bibitem{1744} Jaume Gibert, Ernest Valveny, \& Horst Bunke. (2011). Vocabulary Selection for Graph of Words Embedding. In J. Vitria, J. M. R. Sanches, \& M. Hern{\'a}ndez (Eds.), \textit{5th Iberian Conference on Pattern Recognition and Image Analysis} (Vol. 6669, pp. 216--223). LNCS. Berlin: Springer.

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