metasearch

-introducing-devise Customizing devise: Http://railscasts.com/episodes/210-customizing-devise Authorization with cancan: Http://railscasts.com/episodes/192-authorization-with-cancan Declarative authorization: Http://railscasts.com/episodes/188-declarative-authorization 3. Form-related ========================================================== ===== Search, sort, paginate with Ajax: Http://railscasts.com/episodes/240-search-sort-paginate-with-ajax Pagination with kaminari: Http://rails

(a metasearch application) is aimed at a given query, combining the results of several search engines and then ranking the pages. For example, there are n search engine e1,e2...en. Li represents the list of page rankings that EI gives. Fi (U) =-k indicates that EI will rank page u as k,fi (u) =-m (m>| li|) indicates that EI will not appear on the Li page with the rank set to W. Linear Combination Suppose we have several ranking experts

it is max{n1,n2} or N1+N2, we continue to look down. I have a moment to smoke their own impulse, ni, is n1+n2 ah--. To continue to look down means that there is no easy way. I have no idea what to do with my bile. (Why are you so stupid?) Then, the interviewer again prompts: If you give you a number of median size, how to insert it. An instant thought of the binary insertion, respectively, from the middle look up. Then ask the complexity, answer Yue Logn1+logn2. Then it goes on, which is basica

search services, mainly including metasearch Engine) and integrated search engine (all-in-one search page ). The working principle of the full-text search engine is shown in 1. Figure 1 full-text search engine working principle 2. Intelligent proxy technology From the perspective of application, intelligent proxy, also known as the agent, is a new achievement in AI research. It is the computing entity that can automatically execute

] yuan search engine research Zhang Weifeng, Xu Baowen, Zhou Xiaoyu, Li Dong, Xu Lei Computer Science 2001 Vol.28[6] Yang Xiaohua, Liu Zhenyu, Tan Minsheng, Liu Jie, and Zhang agile constraints of the synthesis algorithm of the meta-search engine system.Journal of software 2002 vol.14 No. 7[7] search engine technologies and trends Li Xiaoming and Liu Jianguo.[8] Yang M. H ., yang C. C ., chung y.m. A natural language proccessing based Internet agent [J]. system Man and cybernetics IEEE, 1997 (1)

F o r K, it may execute first than its parent process, so it prints the parent process I d will be the parent process that created it, notI-n i-t process (process ID 1).#include#include#include "Ourhdr.h"int main (void){pid_t pid;if ((PID = fork ()) Err_sys ("fork Error");else if (PID = = 0) {/* First child */if ((PID = fork ()) Err_sys ("fork Error");else if (PID > 0)Exit (0); /* Parent from second fork = = First child *//* We ' re the second child; Our parent becomes init as soonAs our real p

Transfer From address http://blog.csdn.net/metasearch/article/details/4428865In algorithm analysis, when a recursive call is included in an algorithm, the analysis of its time complexity is transformed into a recursive equation solution. In fact, this problem is a mathematical solution to the asymptotic order of the problem, and the recursive equation of the form of various, the solution is also a variety of methods, more commonly used in the followin

allows us to define the name of the target file we generated, for example, we execute our backup project which is the default generation of the backup execution file, but we want our executable file named Abcbackup, we can writeTARGET = AbcbackupObjects_dir:In general we generate a lot of intermediate files when compiling our project, such as. o Files (under Linux) or. obj (under Windows), so our project is messy, so we can define this option, and we can define this:Objects_dir + =/objsSo, all

Recently, my boss asked me to sort out the papers published by the lab staff. At first, the boss gave us a copy of the lab's own statistics. Then the library is asked to search for a paper list data based on the list. Then merge the two The original records of the lab are taken for granted as accurate, so the conflicting data is deleted as part of the library. Unexpectedly, at the end of the verification, there were a lot of errors in the data. What is true is the data provided by the Library Ma

From: http://blog.csdn.net/metasearch/article/details/2147213 TCP handshake protocol In TCP/IP, TCP provides reliable connection services and uses three handshakes to establish a connection. First handshake: when a connection is established, the client sends the SYN Packet (SYN = J) to the server and enters the syn_send status. Wait for the server to confirm; The second handshake: when the server receives the SYN packet, it must confirm the customer's

scenarios of F (N), we have an approximate formula of T (n:1. If F (n) = O (nlogb A-ε) exists for a constant ε> 0, T (n) = O (nlogb)2. If F (n) = O (nlogb A), T (n) = O (nlogb A * logn)3. if F (n) = O (nlogb A + ε), and for a constant C> 1 and all sufficiently large positive integers n, there is AF (N/B) ≤ CF (N), T (n) = O (f (n )).If T (n) = 4 T (n/2) + N, then a = 4, B = 2, F (n) = n, it is calculated that nlogb A = nlog2 4 = n2, while F (n) = n = O (n2-ε). At this time, ε = 1, according to

Weifeng, Xu Baowen, Zhou Xiaoyu, Li Dong, Xu Lei Computer Science 2001 Vol.28[6] Yang Xiaohua, Liu Zhenyu, Tan Minsheng, Liu Jie, and Zhang agile constraints of the synthesis algorithm of the meta-search engine system.Journal of software 2002 vol.14 No. 7[7] search engine technologies and trends Li Xiaoming and Liu Jianguo.[8] Yang M. H ., yang C. C ., chung y.m. A natural language proccessing based Internet agent [J]. system Man and cybernetics IEEE, 1997 (1): 100-105[9] research progress of c

interviewer said, whether it is max{n1,n2} or N1+N2, we continue to look down. I suddenly want to smoke their own impulse, a n1+n2 ah--. To keep looking down means that there is no easy way. I twisted my bile, I had no idea ... (How can you be so stupid?) Then, the interviewer again prompts: If you give you a number of median size, how to insert it. Instantly thought of binary insertion, respectively, from the middle to find. Then ask the complexity, answer Yue Logn1+logn2. And then it goes on,