I also do use lucene for the analysis of the document, I don't see the problem. Lucene's tokens have a pool and are re-used, so I wouldn't care about that overhead, i.e.
Are you planning on developing a faster lucene? :) On 2/8/11 12:35 PM, Marco Didonna wrote: > On 8 February 2011 11:46, Claudio Martella <[email protected]> wrote: >> Hi Marco, >> >> as Julien suggests, nutch is probably not the right place to look at. >> My personal advice is to have a look at Jimmy Lin's Cloud9, and >> specifically: >> >> http://www.umiacs.umd.edu/~jimmylin/Cloud9/docs/exercises/indexing.html >> >> > Actually my implementation is based on jimmy lin's examples because I > have used his book as introduction to mapreduce algorithm design :) > However I also take into account term positions, and section (title, > body, abstract) in which a term occurs. That said, I think my approach > is a little dirty as I use lucene's class to get the positional term > vector: there are too many objects created and there's a waste of > memory, IMHO. So I was looking for something a little more elegant and > "hadoopish" > > Thanks for you answer. > > MD > -- Claudio Martella Digital Technologies Unit Research & Development - Analyst TIS innovation park Via Siemens 19 | Siemensstr. 19 39100 Bolzano | 39100 Bozen Tel. +39 0471 068 123 Fax +39 0471 068 129 [email protected] http://www.tis.bz.it Short information regarding use of personal data. According to Section 13 of Italian Legislative Decree no. 196 of 30 June 2003, we inform you that we process your personal data in order to fulfil contractual and fiscal obligations and also to send you information regarding our services and events. Your personal data are processed with and without electronic means and by respecting data subjects' rights, fundamental freedoms and dignity, particularly with regard to confidentiality, personal identity and the right to personal data protection. At any time and without formalities you can write an e-mail to [email protected] in order to object the processing of your personal data for the purpose of sending advertising materials and also to exercise the right to access personal data and other rights referred to in Section 7 of Decree 196/2003. The data controller is TIS Techno Innovation Alto Adige, Siemens Street n. 19, Bolzano. You can find the complete information on the web site www.tis.bz.it.
