Tìm hiểu công nghệ động cơ tìm kiếm của lucene xây dựng ứng dụng minh họa

~ff"C;;:> KEJ ~ B600 van ban, oa s6 la cac lo~ti van bim thong dVng nhu doc, docx, xIs, xIsx, ppt, pptx, html, va chua oVng nhiSu bang ma ti~ng Vi~t K~t qua thu ouqc la r~t kha quan Trang 37 Chuang 4: KSt lu?n va dinh huang CHU'ONG : KET LU~N vA DINH HU'ONG 4.1 KET LuAN vE DE TAL Qua nghien Clm d~ tai t6t nghi~p nay, nh6m chung em dff biSt them m9t cong ngh~ h6 t1'q tim kiSm m~nh me lInh vvc cong ngh~ thong tin, va hi~u duqc tinh c~n thiSt va thvc ti~n Clla n6 Qua d6 t1'ang bi kiSn thuc cho minh, ap dVng phat t1'i~n cac chuang t1'inh lrng dVng h6 t1'Q'tim kiSm D~ tai dff d~t duqc kSt qua kha quan 4.1.1 Uu Di~m: 4.1.1.1 V~ ph~n nghien cu'u: N~m dUQ'c cac tinh nang co ban, co chS lam vi~c Clla thu vi~n Lucene t1'ong tiSn trinh l?p chi m\lc tai li~u va tim kiSm tai li~u N~m duqc nhfrng khai ni~m m6'i v~ cac 16'p d6i tuqng Lucene ch~ng h~n nhu Token, Analyzer N~m duqc cong d\lng Clla cac 16'pma Lucene Slr dVng l~p chi m\lc va tim kiSm Tich hqp duqc b9 thu vi~n Lucene d~ xay dVng ph~n m~m quan 1;' h6 so cong van 4.1.1.2 V~ ph~n m~m: Giao di~n dan gian d~ Slr dVng, than thi~n v6'i nguc)'i dung Cung c~p hai chuc nang chinh tim kiSm va l?p chi mvc Ngoai 1'a, can c6 chuc nang xem th6ng ke d~ nguo'i dung c6 th~ biSt duqc SlJ xu~t hi~n Clla cac tu' minh c~n t1'a cuu t1'ong tai li~u chi m\lc nhu thS nao Han thS nfra, chu'c nang xem highlight cling duqc phat t1'i~n t1'ong ung d\lng t1'en 4.1.2 KhuySt Di~m: Ngoai nhfrng kiSn thuc ma Lucene dff mang l~i, chung em cam th~y vfrn can h~n chS ma nh6m c~n kh~c plwc: Lucene la m9t thu vi~n dUQ'cxem la kha 16'n, chung em chi m6'i tim hi~u duqc cac tinh nang co b~m eua n6; H~ th6ng ma chung em xay dlJng chi m6'i ap dvng ph~m vi nhc v6'i s6 luqng van ban can lwn chS, k9 thu?t tim kiSm nang cao chua c6 a ChuO'ng 4: K~t lu~n va dinh huang 4.2 DE Trang 38 XUAT HU'6NG PHAT TRIEN US dua nhfrng dS xu~t ma nh6m dff th6ng nhM ttl' tru6'c, chung em kh~ng dinh l~i Lucene khong phai la mQt c6 may tim ki~m Lucene chi c6 thS lam thu vi~n cho cac nha phM triSn (mg dt,ll1g su dt,ll1g,tich hQ'p vao chuO'ng trinh ung dt,ll1g Chung em nh~n th~y r&ng, v6i vi~c phat triSn nhanh ch6ng cua cong ngh~ thong tin cling nhu nhu c~u tim ki~m thong tin cua nguc)'i dung mQt nhiSu thi h~ th6ng dt c6 kha nang dS phat triSn Chung em dg dinh se phM triSn (mg dt,ll1g cua minh them cac chu'c nang khac nhu: chuc nang W dQng nh~n di~n bang ma ti~ng Vi~t, chuySn d6i ti~ng Vi~t vS d~ng tieu chu:1n TCVN, hay nghien cuu cac k5' thu~t tim ki~m nang cao Trang 39 Danh ml,lc tai li~u tham khao va trich dftn DANH Ml)C TAl LI~U TRAM KHAo [1] Erik Hatcher - Otis Gospodnetic, Lucene In Action [2] http://www codepro iecL com/KE/l ibrary/lntroducingLucene [3] http://www.codeproject.com/KE/cs/lucene aspx analysis.aspx [4] http://www.codeproject.com/KE/string/pdf2text.aspx [5] http://www.codeproject.com/KB/reCipes/TokenParser.aspx [6] http://www.codeproiect.com/KE/ cs/HTML Page Parser aspx [7] http://www.codeproject.com/KE/recipes/FFHtm [8] http://www.codeproject.com/KE/ IParser aspx cs/html parser aspx [9] http://www.codeproject.com/At1icles/57176/Parsing-HTML- Tags-in- Csharp.aspx [10].http://l11cene.apache.org/java [11 ].http://wiki.apache.org/lucene-java [ 12].http://www.dotllicene.net/ ' • , [13].http://lucene.apache.org/lucene.net/docs/ PHl) CHi; TRicH DAN Trong bao cao lu~n van t6t nghi~p nh6m chung em c6 Slr dl,lng mQt s6 hinh imh tai li~u "Lucene in action" bao g6m: [1] Hinh 1.5: A typical application integration with Lucene - t?i trang s6 [2] Hinh 2.1: Indexing with Lucene breaks down into three main operations: converting data to text, analyzing it, and saving it to the index - t?i trang s630 [3] Hinh 7.1: DocumentHandler interface that all document format parsers will implement - t?i trang s6 225 [4] Hinh 7.2: XML snippet representing an address book entry - t?i trang s6 227 [5] Hinh 7.3: DocumentHandler using the SAX API to parse an address book entry - t?i trang s6 228 [6] Bang 1.1: Lucene's release history - t?i trang s6