Right. I'm happy to do debugging and/or send log files... But there's a ton printed to stdout. So, with respect to the 11 steps at http://lucene.apache.org/mahout/taste.html#demo , which step produces the DataModel? And where in the file system is it supposed to live?
---------------------------------------- > Date: Mon, 1 Jun 2009 16:43:43 +0100 > Subject: Re: RE: taste-web example booboo > From: [email protected] > To: [email protected] > > Yes that is the same error, but more descriptive now. > > There should be log output from the code on stdout - I wonder what that > shows? Turning the output level down to FINE would show even more. > > You can call methods on DataModel to check its state and print the result. I > am pretty sure you will find it loaded nothing for some reason. The file is > there, but... hmm. I am having trouble guessing how it succeeds but then has > no data. Some more log output - or if you care to, some debugging - is the > next step. > > Sean > > On Jun 1, 2009 4:32 PM, "Jack Tanner" wrote: > > > This still doesn't work for me off trunk. :( The new error is "dataModel has > no items". When is the data model supposed to be generated? How can I check > whether it has items or not? > > This is on Fedora 10, maven 2.1.0. > HTTP ERROR: 500dataModel has no items > RequestURI=/mahout-taste-webapp/RecommenderServletCaused > by:java.lang.IllegalArgumentException: dataModel has no items > at > org.apache.mahout.cf.taste.impl.recommender.slopeone.MemoryDiffStorage.(MemoryDiffStorage.java:101) > > at > org.apache.mahout.cf.taste.impl.recommender.slopeone.SlopeOneRecommender.(SlopeOneRecommender.ja... > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365) > at > org.mortbay.jetty.security.ConstraintsSecurityHandler.handle(ConstraintsSecurityHandler.java:220) > > at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:822) > at > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:305) > at > org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:229) > at > org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:113) > > at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) > at org.mortbay.jetty.S... > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:550) > at > org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:876) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:535) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:407) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:421) > > at > org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520) > > Powered by Jetty:// > > ---------------------------------------- >> Date: Fri, 29 May 2009 23:03:06 +0100 > >> Subject: Re: taste-web example booboo> From: [email protected]> To: > [email protected]... > >> Oh sorry, missed that bit. Well... whatever it is, seems to be fixed.> I > do know there were some ... > >> On Fri, May 29, 2009 at 10:41 PM, Jack Tanner wrote:>>>> Sean,>>>> I > did not use the latest c... > _________________________________________________________________ > Windows Live™: Keep your life in sync. > http://windowslive.com/explore?ocid=TXT_TAGLM_BR_life_in_synch_052009 _________________________________________________________________ Hotmail® has a new way to see what's up with your friends. http://windowslive.com/Tutorial/Hotmail/WhatsNew?ocid=TXT_TAGLM_WL_HM_Tutorial_WhatsNew1_052009
