Re: Solr Clustering
Sorry for late response. To be strict, here is what i want: * I get documents all the time. Let's assume those are news (It's rather similar thing). * Every time i get new batch of news i should add them to Solr index and get cluster information for that document. Store this information in the DB (so i should know each document's cluster). * I can't wait for cluster definition service/program to launch from time to time, but it should define clusters on the fly. * I want to be able to get clusters only for some period of time (For example i want to search for clusters only for documents that were loader one month ago). * I will have tens of thousands of new documents every day and overall base of several millions. I'm reading Mahout in action now. But maybe you can point me to what i need. --- Исходное сообщение --- От кого: Chandan Tamrakar chandan.tamra...@nepasoft.com Кому: solr-user@lucene.apache.org Дата: 4 сентября 2012, 12:30:56 Тема: Re: Solr Clustering yes there is a solr component if you want to cluster solr documents , check the following linkhttp://wiki.apache.org/solr/ClusteringComponent Carrot2 might be good if you want to cluster few thousands of documents , for example when user search solr , just cluster the search results Mahout is much more scalable and probably you need Hadoop for that thanks chandan On Tue, Sep 4, 2012 at 2:10 PM, Denis Kuzmenok forward...@ukr.net wrote: Original Message Subject: Solr Clustering From: Denis Kuzmenok forward...@ukr.net To: solr-user@lucene.apache.org CC: Hi, all. I know there is carrot2 and mahout for clustering. I want to implement such thing: I fetch documents and want to group them into clusters when they are added to index (i want to filter similar documents for example for 1 week). i need these documents quickly, so i cant rely on some postponed calculations. Each document should have assigned cluster id (like group similar documents into clusters and assign each document its cluster id. It's something similar to news aggregators like google news. I dont need to search for clusters with documents older than 1 week (for example). Each document will have its unique id and saved into DB. But solr will have cluster id field also. Is it possible to implement this with solr/carrot/mahout? -- Chandan Tamrakar * *
Solr Clustering
Original Message Subject: Solr Clustering From: Denis Kuzmenok forward...@ukr.net To: solr-user@lucene.apache.org CC: Hi, all. I know there is carrot2 and mahout for clustering. I want to implement such thing: I fetch documents and want to group them into clusters when they are added to index (i want to filter similar documents for example for 1 week). i need these documents quickly, so i cant rely on some postponed calculations. Each document should have assigned cluster id (like group similar documents into clusters and assign each document its cluster id. It's something similar to news aggregators like google news. I dont need to search for clusters with documents older than 1 week (for example). Each document will have its unique id and saved into DB. But solr will have cluster id field also. Is it possible to implement this with solr/carrot/mahout?
Solr Clustering
Hi, all. I know there is carrot2 and mahout for clustering. I want to implement such thing: I fetch documents and want to group them into clusters when they are added to index (i want to filter similar documents for example for 1 week). i need these documents quickly, so i cant rely on some postponed calculations. Each document should have assigned cluster id (like group similar documents into clusters and assign each document its cluster id. It's something similar to news aggregators like google news. I dont need to search for clusters with documents older than 1 week (for example). Each document will have its unique id and saved into DB. But solr will have cluster id field also. Is it possible to implement this with solr/carrot/mahout?
Solr Clustering
Hi, all. I know there is carrot2 and mahout for clustering. I want to implement such thing: I fetch documents and want to group them into clusters when they are added to index (i want to filter similar documents for example for 1 week). i need these documents quickly, so i cant rely on some postponed calculations. Each document should have assigned cluster id (like group similar documents into clusters and assign each document its cluster id. It's something similar to news aggregators like google news. I dont need to search for clusters with documents older than 1 week (for example). Each document will have its unique id and saved into DB. But solr will have cluster id field also. Is it possible to implement this with solr/carrot/mahout?
Field grouping?
Hi. Suppose i have a field price with different values, and i want to get ranges for this field depending on docs count, for example i want to get 5 ranges for 100 docs with 20 docs in each range, 6 ranges for 200 docs = 34 docs in each field, etc. Is it possible with solr?
Re: Field grouping?
But i don't know what values would be price field in that query. It can be 100-1000, and 10-100, and i want to get ranges in every query, just split price field by docs number. Yes, Ranged Facets http://wiki.apache.org/solr/SimpleFacetParameters#Facet_by_Range 2011/8/31 Denis Kuzmenok forward...@ukr.net Hi. Suppose i have a field price with different values, and i want to get ranges for this field depending on docs count, for example i want to get 5 ranges for 100 docs with 20 docs in each range, 6 ranges for 200 docs = 34 docs in each field, etc. Is it possible with solr?
Re: indexing but not able to search
Hi All I indexed a set of documents using Solr, which are shown in the stats page on the admin panel. However, the search interface always returns 0 documents to me. When I give the query as *:*, it does return me all the 20K odd documents I tried indexing just a few hours back. Can someone tell me if there is anything I am missing, on the querying config part? Sowmya. Show your solrconfig.xml, and url you are querying to select results
Strange behavior
Hi. I've debugged search on test machine, after copying to production server the entire directory (entire solr directory), i've noticed that one query (SDR S70EE K) does match on test server, and does not on production. How can that be?
Re: Strange behavior
What should i provide, OS is the same, environment is the same, solr is completely copied, searches work, except that one, and that is strange.. I think you will need to provide more information than this, no-one on this list is omniscient AFAIK. François On Jun 14, 2011, at 10:44 AM, Denis Kuzmenok wrote: Hi. I've debugged search on test machine, after copying to production server the entire directory (entire solr directory), i've noticed that one query (SDR S70EE K) does match on test server, and does not on production. How can that be?
Edismax sorting help
Hi, everyone. I have fields: text fields: name, title, text boolean field: isflag (true / false) int field: popularity (0 to 9) Now i do query: defType=edismax start=0 rows=20 fl=id,name q=lg optimus fq= qf=name^3 title text^0.3 sort=score desc pf=name bf=isflag sqrt(popularity) mm=100% debugQuery=on If i do query like Samsung i want to see prior most relevant results with isflag:true and bigger popularity, but if i do query like Nokia 6500 and there is isflag:false, then it should be higher because of exact match. Tried different combinations, but didn't found one that suites me. Just got isflag/popularity sorting working or isflag/relevancy sorting.
Re: Edismax sorting help
Your solution seems to work fine, not perfect, but much better then mine :) Thanks! If i do query like Samsung i want to see prior most relevant results with isflag:true and bigger popularity, but if i do query like Nokia 6500 and there is isflag:false, then it should be higher because of exact match. Tried different combinations, but didn't found one that suites me. Just got isflag/popularity sorting working or isflag/relevancy sorting. Multiplicative boosts tend to be more stable... Perhaps try replacing bf=isflag sqrt(popularity) with bq=isflag:true^10 // vary the boost to change how much isflag counts vs the relevancy score of the main query boost=sqrt(popularity) // this will multiply the result by sqrt(popularity)... assumes that every document has a non-zero popularity You could get more creative in trunk where booleans have better support in function queries. -Yonik http://www.lucidimagination.com
Re: Boosting result on query.
If you could move to 3.x and your linked item boosts could be calculated offline in batch periodically you could use an external file field to store the doc boost. a few If's though I have 3.2 and external file field doesn't work without solr restart (on multicore instance).
Re: Problem with boosting function
Show your full request to solr (all params) Hi, I'm trying to use bf parameter in solr queries but I'm having some problems. The context is: I have some topics and a integer weight of popularity (number of users that follow the topic). I'd like to boost the documents according to this weight field, and it changes (users may start following or unfollowing that topic). I through the best way to do that is adding a bf parameter to the query. First of all I was trying to include it in a query processed by a default SearchHandler. I debugged the results and the scores didn't change. So I tried to change the defType of the SearchHandler to dismax (I didn't add any other field in solrconfig), and queries didn't work anymore. What is the best way to achieve what I want? Do I really need to use a dismax SearchHander (I read about it, and I don't want to search in multple fields - I want to search in one field and boost in another one)? Thanks in advance Alex Grilo
Re: Problem with boosting function
try: q=title:UnicampdefType=dismaxbf=question_count^5.0 title:Unicamp in any search handler will search only in requested field The queries I am trying to do are q=title:Unicamp and q=title:Unicampbf=question_count^5.0 The boosting factor (5.0) is just to verify if it was really used. Thanks Alex
Re: Documents update
Created file, reloaded solr - externalfilefield works fine, if i change change external files and do curl http://127.0.0.1:4900/solr/site/update -H Content-Type: text/xml --data-binary 'commit /' then no thanges are made. If i start solr without external files and then create them - they are not working.. What is wrong? PS: Solr 3.2 http://lucene.apache.org/solr/api/org/apache/solr/schema/ExternalFileField.html On Tuesday 31 May 2011 15:41:32 Denis Kuzmenok wrote: Flags are stored to filter results and it's pretty highloaded, it's working fine, but i can't update index very often just to make flags up to time =\ Where can i read about using external fields / files? And it wouldn't work unless all the data is stored anyway. Currently there's no way to update a single field in a document, although there's work being done in that direction (see the column stride JIRA). What do you want to do with these fields? If it's to influence scoring, you could look at external fields. If the flags are a selection criteria, it's...harder. What are the flags used for? Could you consider essentially storing a map of the uniqueKey's and flags in a special document and having your app read that document and merge the results with the output? If this seems irrelevant, a more complete statement of the use-case would be helpful. Best Erick
Need query help
For now i have a collection with: id (int) price (double) multivalue brand_id (int) filters (string) multivalue I need to get available brand_id, filters, price values and list of id's for current query. For example now i'm doing queries with facet.field=brand_id/filters/price: 1) to get current id's list: (brand_id:100 OR brand_id:150) AND (filters:p1s100 OR filters:p4s20) 2) to get available filters on selected properties (same properties but another values): (brand_id:100 OR brand_id:150) AND (filters:p1s* OR filters:p4s*) 3) to get available brand_id (if any are selected, if none - take from 1st query results): (filters:p1s100 OR filters:p4s20) 4) another request to get available prices if any are selected Is there any way to simplify this task? Data needed: 1) Id's for selected filters, price, brand_id 2) Available filters, price, brand_id from selected values 3) Another values for selected properties (is any chosen) 4) Another brand_id for selected brand_id 5) Another price for selected price Will appreciate any help or thoughts! Cheers, Denis Kuzmenok
Re: Solr memory consumption
Hey Denis, * How big is your index in terms of number of documents and index size? 5 cores, average 250.000 documents, one with about 1 million (but without text, just int/float fields), one with about 10 million id/name documents, but with n-gram. Size: 4 databases about 1G (sum), 1 database (with n-gram) for 21G.. I don't know any other way to search for product names except n-gram =\ * Is it production system where you have many search requests? Yes, dependent on database, but not less than 100 req/sec * Is there any pattern for OOM errors? I.e. right after you start your Solr app, after some search activity or specific Solr queries, etc? No, java just raises memory size used all the time until it crush. * What are 1) cache settings 2) facets and sort-by fields 3) commit frequency and warmup queries? All settings are default (as given in trunk / example). Facets are used, sort by also used. Commits are divided into 2 groups: - often but small (last changed info) - 1 time per day all the database etc Generally you might want to connect to your jvm using jconsole tool and monitor your heap usage (and other JVM/Solr numbers) * http://java.sun.com/developer/technicalArticles/J2SE/jconsole.html * http://wiki.apache.org/solr/SolrJmx#Remote_Connection_to_Solr_JMX HTH, Alexey
Need Schema help
Hi) What i need: Index prices to products, each product has multiple prices, to each region, country, and price itself. I tried to do with field type long multiple:true, and form value as country code + region code + price (1004000349601, for example), but it has strange behaviour.. price:[* TO 1004000349600] do include 1004000349601.. I am doing something wrong? Possible data: Country: 1-9 Region: 0-99 Price: 1-999
Re: Need Schema help
Thursday, June 2, 2011, 6:29:23 PM, you wrote: Wow. This sounds nice. Will try this way. Thanks! Denis, would dynamic fields help: field defined as *_price in schema at index time you index fields named like: [1-9]_[0-99]_price at query time you search the price field for a given country region 1_10_price:[10 TO 100] This may work for some use-cases i guess lee
Re: Solr memory consumption
My OS is also CentOS (5.4). If it were 10gb all the time it would be ok, but it grows for 13-15gb, and hurts other services =\ It could be environment specific (specific of your top command implementation, OS, etc) I have on CentOS 2986m virtual memory showing although -Xmx2g You have 10g virtual although -Xmx6g Don't trust it too much... top command may count OS buffers for opened files, network sockets, JVM DLLs itself, etc (which is outside Java GC responsibility); additionally to JVM memory... it counts all memory, not sure... if you don't have big values for 99.9%wa (which means WAIT I/O - disk swap usage) everyhing is fine... -Original Message- From: Denis Kuzmenok Sent: May-31-11 4:18 PM To: solr-user@lucene.apache.org Subject: Solr memory consumption I run multiple-core solr with flags: -Xms3g -Xmx6g -D64, but i see this in top after 6-8 hours and still raising: 17485 test214 10.0g 7.4g 9760 S 308.2 31.3 448:00.75 java -Xms3g -Xmx6g -D64 -Dsolr.solr.home=/home/test/solr/example/multicore/ -jar start.jar Are there any ways to limit memory for sure? Thanks
Re: Solr memory consumption
Here is output after about 24 hours running solr. Maybe there is some way to limit memory consumption? :( test@d6 ~/solr/example $ java -Xms3g-Xmx6g-D64 -Dsolr.solr.home=/home/test/solr/example/multicore/ -jar start.jar 2011-05-31 17:05:14.265:INFO::Logging to STDERR via org.mortbay.log.StdErrLog 2011-05-31 17:05:14.355:INFO::jetty-6.1-SNAPSHOT 2011-05-31 17:05:16.447:INFO::Started SocketConnector@0.0.0.0:4900 # # A fatal error has been detected by the Java Runtime Environment: # # java.lang.OutOfMemoryError: requested 32744 bytes for ChunkPool::allocate. Out of swap space? # # Internal Error (allocation.cpp:117), pid=17485, tid=1090320704 # Error: ChunkPool::allocate # # JRE version: 6.0_17-b17 # Java VM: OpenJDK 64-Bit Server VM (14.0-b16 mixed mode linux-amd64 ) # Derivative: IcedTea6 1.7.5 # Distribution: Custom build (Wed Oct 13 13:04:40 EDT 2010) # An error report file with more information is saved as: # /mnt/data/solr/example/hs_err_pid17485.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # http://icedtea.classpath.org/bugzilla # Aborted I run multiple-core solr with flags: -Xms3g -Xmx6g -D64, but i see this in top after 6-8 hours and still raising: 17485 test214 10.0g 7.4g 9760 S 308.2 31.3 448:00.75 java -Xms3g -Xmx6g -D64 -Dsolr.solr.home=/home/test/solr/example/multicore/ -jar start.jar Are there any ways to limit memory for sure? Thanks
Re: Solr memory consumption
So what should i do to evoid that error? I can use 10G on server, now i try to run with flags: java -Xms6G -Xmx6G -XX:MaxPermSize=1G -XX:PermSize=512M -D64 Or should i set xmx to lower numbers and what about other params? Sorry, i don't know much about java/jvm =( Wednesday, June 1, 2011, 7:29:50 PM, you wrote: Are you in fact out of swap space, as the java error suggested? The way JVM's work always, if you tell it -Xmx6g, it WILL use all 6g eventually. The JVM doesn't Garbage Collect until it's going to run out of heap space, until it gets to your Xmx. It will keep using RAM until it reaches your Xmx. If your Xmx is set so high you don't have enough RAM available, that will be a problem, you don't want to set Xmx like this. Ideally you don't even want to swap, but normally the OS will swap to give you enough RAM if neccesary -- if you don't have swap space for it to do that, to give the JVM the 6g you've configured it to take well, that seems to be what the Java error message is telling you. Of course sometimes error messages are misleading. But yes, if you set Xmx to 6G, the process WILL use all 6G eventually. This is just how the JVM works.
Re: Solr memory consumption
Overall memory on server is 24G, and 24G of swap, mostly all the time swap is free and is not used at all, that's why no free swap sound strange to me.. There is no simple answer. All I can say is you don't usually want to use an Xmx that's more than you actually have available RAM, and _can't_ use more than you have available ram+swap, and the Java error seems to be suggesting you are using more than is available in ram+swap. That may not be what's going on, JVM memory issues are indeed confusing. Why don't you start smaller, and see what happens. But if you end up needing more RAM for your Solr than you have available on the server, then you're just going to need more RAM. You may have to learn something about java/jvm to do memory tuning for Solr. Or, just start with the default parameters from the Solr example jetty, and if you don't run into any problems, then great. Starting with the example jetty shipped with Solr would be the easiest way to get started for someone who doesn't know much about Java/JVM. On 6/1/2011 12:37 PM, Denis Kuzmenok wrote: So what should i do to evoid that error? I can use 10G on server, now i try to run with flags: java -Xms6G -Xmx6G -XX:MaxPermSize=1G -XX:PermSize=512M -D64 Or should i set xmx to lower numbers and what about other params? Sorry, i don't know much about java/jvm =( Wednesday, June 1, 2011, 7:29:50 PM, you wrote: Are you in fact out of swap space, as the java error suggested? The way JVM's work always, if you tell it -Xmx6g, it WILL use all 6g eventually. The JVM doesn't Garbage Collect until it's going to run out of heap space, until it gets to your Xmx. It will keep using RAM until it reaches your Xmx. If your Xmx is set so high you don't have enough RAM available, that will be a problem, you don't want to set Xmx like this. Ideally you don't even want to swap, but normally the OS will swap to give you enough RAM if neccesary -- if you don't have swap space for it to do that, to give the JVM the 6g you've configured it to take well, that seems to be what the Java error message is telling you. Of course sometimes error messages are misleading. But yes, if you set Xmx to 6G, the process WILL use all 6G eventually. This is just how the JVM works.
Re: Solr memory consumption
There were no parameters at all, and java hitted out of memory almost every day, then i tried to add parameters but nothing changed. Xms/Xmx - did not solve the problem too. Now i try the MaxPermSize, because it's the last thing i didn't try yet :( Wednesday, June 1, 2011, 9:00:56 PM, you wrote: Could be related to your crazy high MaxPermSize like Marcus said. I'm no JVM tuning expert either. Few people are, it's confusing. So if you don't understand it either, why are you trying to throw in very non-standard parameters you don't understand? Just start with whatever the Solr example jetty has, and only change things if you have a reason to (that you understand). On 6/1/2011 1:19 PM, Denis Kuzmenok wrote: Overall memory on server is 24G, and 24G of swap, mostly all the time swap is free and is not used at all, that's why no free swap sound strange to me..
Re: Documents update
Flags are stored to filter results and it's pretty highloaded, it's working fine, but i can't update index very often just to make flags up to time =\ Where can i read about using external fields / files? And it wouldn't work unless all the data is stored anyway. Currently there's no way to update a single field in a document, although there's work being done in that direction (see the column stride JIRA). What do you want to do with these fields? If it's to influence scoring, you could look at external fields. If the flags are a selection criteria, it's...harder. What are the flags used for? Could you consider essentially storing a map of the uniqueKey's and flags in a special document and having your app read that document and merge the results with the output? If this seems irrelevant, a more complete statement of the use-case would be helpful. Best Erick
Re: Documents update
Will it be slow if there are 3-5 million key/value rows? http://lucene.apache.org/solr/api/org/apache/solr/schema/ExternalFileField.html On Tuesday 31 May 2011 15:41:32 Denis Kuzmenok wrote: Flags are stored to filter results and it's pretty highloaded, it's working fine, but i can't update index very often just to make flags up to time =\ Where can i read about using external fields / files?
Solr memory consumption
I run multiple-core solr with flags: -Xms3g -Xmx6g -D64, but i see this in top after 6-8 hours and still raising: 17485 test214 10.0g 7.4g 9760 S 308.2 31.3 448:00.75 java -Xms3g -Xmx6g -D64 -Dsolr.solr.home=/home/test/solr/example/multicore/ -jar start.jar Are there any ways to limit memory for sure? Thanks
n-gram speed
I have a database with n-gram field, about 5 millions documents. QTime is about 200-1000 ms, database is not optimized because it must reply to queries everytime and data are updated often. Is it normal? Solr: 3.1, java -Xms2048M -Xmx4096M Server: i7, 12Gb
Solr 3.1 commit errors
After restart i have these errors every time i do commit via post.jar. Config: multicore / 5 cores, Solr 3.1 Lock obtain timed out: SimpleFSLock@/home/ava/solr/example/multicore/context/data/index/write.lock org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: SimpleFSLock@/home/ava/solr/example/multicore/context/data/index/write.lock at org.apache.lucene.store.Lock.obtain(Lock.java:84) at org.apache.lucene.index.IndexWriter.init(IndexWriter.java:1097) at org.apache.solr.update.SolrIndexWriter.init(SolrIndexWriter.java:83) at org.apache.solr.update.UpdateHandler.createMainIndexWriter(UpdateHandler.java:102) at org.apache.solr.update.DirectUpdateHandler2.openWriter(DirectUpdateHandler2.java:174) at org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:222) at org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateProcessorFactory.java:61) at org.apache.solr.handler.XMLLoader.processUpdate(XMLLoader.java:147) at org.apache.solr.handler.XMLLoader.load(XMLLoader.java:77) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:55) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1360) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.j Tried to google a little bit but without any luck..
Re: Documents update
I'm using 3.1 now. Indexing lasts for a few hours, and have big plain size. Getting all documents would be rather slow :( Not with 1.4, but apparently there is a patch for trunk. Not sure if it is in 3.1. If you are on 1.4, you could first query Solr to get the data for the document to be changed, change the modified values, and make a complete XML, including all fields, for post.jar. Regards, Gora
XML Update overwrite?
Hi. I try to understand the meaning of overwrite=false in xml that i post with post.jar. I have two possible behaviour: 1) if the document with specified uniquekey exists - it's not updated (even if some fields are changed) 2) if the document with specified uniquekey exists and all fields are the same - it's not updated and is skipped What is the correct way overwrite=false works? Thanks
Solr sorting
Hi. Is there any way to make such scheme working: I have many documents, each has a random field to enable random sorting, and i have a weight field. I want to get random results, but documents with bigger weight should appear more frequently. Is that possible? Thanks, in advance.
Re: Solr sorting
--- On Mon, 3/14/11, Denis Kuzmenok forward...@ukr.net wrote: From: Denis Kuzmenok forward...@ukr.net Subject: Solr sorting To: solr-user@lucene.apache.org Date: Monday, March 14, 2011, 10:23 AM Hi. Is there any way to make such scheme working: I have many documents, each has a random field to enable random sorting, and i have a weight field. I want to get random results, but documents with bigger weight should appear more frequently. You can use http://wiki.apache.org/solr/FunctionQuery An example can be : sort=product(random_123,weight) But this requires solr3.1 or trunk. With 1.4.1 you can use _val_ hook : q=_val_:product(random_78,weight) Tried this. Tried to make query with one category on documents. Top documents have weight about 1700, 1000, 800, 600. And therefore top document always hits in top position :( There should be some limitations or something for the weight field values, i guess..
Solr context search
Hi. I wonder is it possible in built-in way to make context search in Solr? I have about 50k documents (mainly 'name' of char(150)), so i receive a content of a page and should show found documents. Of course i can just join by OR and submit a search, but an accuracy would be not so good.. Thanks in advance.
