Improvements on the Porter`s Stemming Algorithm for Portuguese

The amount of textual information digitally stored is growing every day. However, our capability of processing and analyzing that information is not growing at the same pace. To overcome this limitation, it is important to develop semiautomatic processes to extract relevant knowledge from textual information, such as the text mining process. One of the main and most expensive stages of the text mining process is the text pre-processing stage, where the unstructured text should be transformed to structured format such as an attribute-value table. The stemming process, i.e. linguistics normalization, is usually used to find the attributes of this table. However, the stemming process is strongly dependent on the language in which the original textual information is given. Furthermore, for most languages, the stemming algorithms proposed in the literature are computationally expensive. In this work, several improvements of the well know Porter stemming algorithm for the Portuguese language, which explore the characteristics of this language, are proposed. Experimental results show that the proposed algorithm executes in far less time without affecting the quality of the generated stems.

A Quinta Essência de Agustina Bessa-Luís : la saveur aigre-douce de Macao

In the narrative A Quinta Essência Agustina Bessa-Luís proposes an original reading of the Portuguese postcolonial History, by reinvesting the topics of the intercultural relation and the meeting with the Other. In fact, in the troubled context of April 1974, the character of Jose Carlos Pessanha expatriates towards the East, more precisely towards Macao, one of the last Eastern colonies of the Portuguese colonial Empire. However, the characteristic of this tour of rediscovery of the East is that it makes the destiny of a character in search of himself coincide with the questioning of a country still looking for its own identity. Thus, in this voyage backwards into the Luso-Eastern History, the Author draws the portrait of a Nation-Empire split between the desire of incarnating this “genetic superiority of the Occident” and the fascination for the culture of the Other, symbolizing an “excess of otherness” (B. of Sousa Santos) in the Portuguese identity. Macao, will be the territory of an “entre-deux” and an intercultural circulation, as well as an emblematic ground to the expression of the “ambivalent and hybrid” position (colonizing/colonized) of Portugal in the Occident. As a consequence, the uncomfortable “non-inscription” (J. Gil) and the “nomadism” (Deleuze/Guattari) which characterizes José Carlos Pessanha, would be a reflection of yesterday’s and today’s Lusitanian epopee.