Using weka's StringKernel with multiple string attributes
Hello, When I load a dataset with 2 string attributes using weka's Explorer, and build a classifier using SMO/StringKernel, it seems that weka automatically merges the string attributes into one. But...
View ArticleDate Format
Hi, Can anyone please tell me what date format implies the date 21-07-2013 02:29:40 BST. dd-MM-yyyy HH:mm:ss ___? What should i fill in for BST? thanks Vineet
View Articledoes the TABLE type of DATA SET refresh the results automatically?
hello, I'm trying read an excel file a the main source of information to be used by a prpt file. The excel file would be updated everyday, and I would need the report to reflect those changes. But as I...
View ArticleSum over all rows except last one in Group By
Hello, I'm using Group By to calculate some aggregates. One particular one that I'd like to create is a SUM, but instead of summing over all rows in the group, I'd like to exclude the last row, i.e. if...
View ArticleAutomatic Increase of Database Field Sizes.....BAD!!
Hi We have numerous transformations that we utilise between different environments which may take data from a source where the field length in the source is larger than the target database. I know PDI...
View ArticleCreating a Population Pyramind in CDE
Hey there, I am interested in creating a pyramid (like the first image at http://en.wikipedia.org/wiki/Population_pyramid) I assum this could be done with two bar charts with horizontal orientation....
View ArticleI'm getting BigNumber(33): there was a data type error...
I have a very simple transformation: I read form a table and update in another, in the same database. Some fields are numeric, integer and decimal. My database is MySql. The numeric fields are defined...
View ArticleExecute SQL script - issues with using both variable substitution and argument
Hi, I'm trying to run an update statement in execute sql script: update ${v_table_name} set url = regexp_replace(url ,'${regex}', E'$1$2XNAME', 'ig') where (id between ? and ?) and id <= ?; I have...
View Articlecassandra CQL3 input not supported?
I am trying to use kettle 4.4.0 to read a column family from a Cassandra cluster andI am getting a weird error: the Column family [COLFAMILY-NAME] does not seem to exist in the keyspace [KEYSPACE-NAME]...
View ArticlePassing specific values based on value selected
So I have a data cube set up and connected my dashboard to it. I have set up a chart that looks at some information across all waves of the study (there are 4 waves). I would like the default...
View ArticlePRD 3.9 - Refresh Excel 2010 Data Source
Hello - I'm not new to BI at all, but I am new to using PRD 3.9 CE. I created a simple list report, with one grouping using Excel 2010 as my data source. That worked fine. To refresh with new data, I...
View ArticleDrill down in CDE Dashboard on same panel
hi, I am newbie to pentaho I am trying to achieve a drill down in one of panel in my dashboard like say i display an yearly sales if click on 2012 bar it should display monthly on the same panel (on...
View ArticleWrong measure calculation
Hello ! Let's say we have the following cube : Cube (Date_id*, Address_id*, Patient_id*, Treatment_id*, ConsultationNumber). During a specific date, a patient could have only one address, but could...
View ArticleProblems with text classifier
First, sorry for my english, Hi, i'm developing a text classifier for adverts. I have never used weka before but i have tried with it and i am having few problems. I am going to explain my issues to...
View ArticleReport
Hi, Is there any way we can use cassandra database for the pentaho report designer without using any data integration steps. Please give me any suggestions.
View ArticleXMLA Discover unparse results error fault actor=Mondrian
Hi, I am trying to enable XMLA output for mondrian. I have configured (to my best knowledge) everything and deployed the mondrian.war file. When accessing XMLA using link "JPivot pivot table by XMLA"...
View ArticleConnecting to JDBC (MySQL) Datasource via Report Designer
I am receiving the message below when trying to connect to my MySQL database. I can connect to the JDBC datasource via Data Integration. I have read various post that suggest I copy the mysql jar file...
View ArticleWEKA job keeps running after model saved (job finished)
Hi I run weka jobs from command line or batch files on ubuntu. Even after the job's saved the learned model it keeps on using CPU and memory as if it was still working, this can take even hours before...
View ArticleError about Action Sequence
When I installed Pentaho,I can run pentaho-solutions/bi-developers/getting-started/HelloWorld.xaction. 1.but I copied HelloWorld.xaction to HelloWorld555.xaction. I can't run HelloWorld555.xaction. the...
View Article${Internal.Transformation.Filename.Directory} is blank during development
Is there any way to permanently set the value of ${Internal.Transformation.Filename.Directory}? It's a bit tiresome to have to repeatedly re-enter it into the variable definitions at launch. In...
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