Association Rules problem

Hello,
I have a problem with making association rules in Oracle 10g ODM. The problem is as follows:
I have my test dataset for testing assoc. rules. I used that dataset before for testing assoc. rules models with Oracle 9i ODM release (9.2.0.4). And I have found significant number of rules within that dataset when I used Oracle 9i ODM (9.2.0.4.).
But when I use Oracle 10g ODM to build an association rules model with the same set of parameters (min. support, min. confidence and max. rule length) I've got 0 rules.
I can't find where is the problem, so I think that there is some sort of bug within Oracle 10g ODM.
Does anyone have similar experience or have some explanation for this?
Thnx in advance,
Ivan

What version of Data Miner are you using?
If you are using the api directly, are you using the
java or pl/sql api.
Thanks, MarkI've been using Java API.
I've continued my investigation of the mentioned problem and I have found that DMS throws following exception:
ORA-38605: FI not enough memory (stringK) for candidate generation(stringK)
Cause: There was insufficient available memory for candidate generation.
Suggested action from Metalink is:
In workarea_size_policy='manual' mode, set ficarea_size to a reasonably larger value. Or, in workarea_size_policy='auto' mode, set pga_aggregate_target to a reasonably larger value
And I've increased the size of my SGA more than three times (from 128 to 512 MB), set work_area_policy=auto and set pga_aggregate_target to 20% of SGA .
After that I've got following exception:
ORA-40101: Data Mining System Error ODM_ASSOCIATION_MODEL-BUILD--20010
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 105
ORA-06512: at "DMSYS.ODM_ASSOCIATION_RULE_MODEL", line 150
ORA-06512: at "DMSYS.ODM_ASSOCIATION_RULE_MODEL", line 1299
ORA-01452: cannot CREATE UNIQUE INDEX; duplicate keys found
ORA-06512: at "DMSYS.ODM_ASSOCIATION_RULE_MODEL", line 1364
ORA-06512: at line 1
DMS throws this exception after longer time of task execution.
Now, I don't know what to do further.
I repeat that with the same dataset and same model parameters (support, confidence and max. rule length) I've got significant number of rules with ODMS within Oracle 9i database (9.2.0.4).
Thnx,
Ivo

Similar Messages

Problems with Association Rules

Hi all,
I am trying to use ODMr to run association rules and am getting the following error message:
Server task state: error
Server task detail:
ORA-40101: Data Mining System Error ORA-40101: Data Mining System Error ORA-40101: Data Mining System Error ODM_ASSOCIATION_MODEL-BUILD--20010
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 105
ORA-06512: at "DMSYS.ODM_ASSOCIATION_RULE_MODEL", line 144
ORA-06512: at "DMSYS.ODM_ASSOCIATION_RULE_MODEL", line 1396
ORA-00902: invalid datatype
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 105
ORA-06512: at "DMSYS.ODM_ASSOCIATION_RULE_MODEL", line 144
ORA-06512: at "DMSYS.ODM_ASSOCIATION_RULE_MODEL", line 1396
ORA-06512: at "DMSYS.DBMS_DATA_MINING", line 305
ORA-06512: at "DMSYS.DBMS_JDM_INTERNAL", line 157
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86
ORA-06512: at "DMSYS.DBMS_JDM_INTERNAL", line 179
ORA-06512: at line 1
This error is generated on the sample data as used in the ORACLE 10G Release 2 Data Mining Tutorial, and on other datasets that I tried.
My sense is that the algorithm is expecting data in the datatype of DM_NESTED_NUMERICALS, even though the documentation asks for transactional data. When I converted to nested columns, the prog errored out again as it was expecting a number rather than nested column.??

Hi Carolyn,
I reviewed the tutorial and tested out the example for Association Rules. The example uses SH.SALES and SH.PRODUCTS.
It worked fine.
ODMr converts the "transactional" data, in the case of Association Rules, into DM_NESTED_NUMERICALS.
When ODM documentation refers to transactional data, it implies the use of nested columns. This can be confusing given that older versions of ODM actually supported a "transactional format", which is now supported only through nested columns.
I copied the following view definition that was passed in to ODM to build the Association Rules model (based on the tutorial noted above). Take a look at them to get a better understanding on what ODMr is doing to prepare the data.
If you can give us a specific example including the tutorial table you used and the settings you specified in the Association Rules Wizard, I can review that to see what the problem might be.
Thanks, Mark
SELECT caseTable."DMR$CASE_ID", txnTable1."PROD_ID" FROM "DMUSER"."DM4J$VSALES657013432" caseTable, (SELECT "DMR$CASE_ID", CAST(COLLECT(DM_Nested_Numerical("NAME", "VALUE")) AS DM_Nested_Numericals) "PROD_ID" FROM "DMUSER"."DM4J$SALES423975876" GROUP BY "DMR$CASE_ID") txnTable1 WHERE caseTable."DMR$CASE_ID" = txnTable1."DMR$CASE_ID"
The view makes references to other tables/views defined below:
DM4J$VSALES657013432 is shown below:
SELECT distinct "DMR$CASE_ID" FROM
(SELECT "CUST_ID","TIME_ID", DENSE_RANK() OVER (ORDER BY "CUST_ID","TIME_ID") DMR$CASE_ID FROM "SH"."SALES")
ORDER BY "DMR$CASE_ID"
DM4J$SALES423975876 is shown below:
SELECT DMR$CASE_ID, CAST("PROD_ID" AS VARCHAR2(30)) as NAME, 1 as VALUE
FROM
(SELECT "PROD_ID", "CUST_ID","TIME_ID", DENSE_RANK() OVER (ORDER BY "CUST_ID","TIME_ID") DMR$CASE_ID FROM "SH"."SALES")
ORDER BY DMR$CASE_ID

Association rule in SQL Server Data Mining

I have been working on a problem on association rules in SQL Server Data Tools (Visual Studio 2008) for quite a while but have not yet been able to figure out the solution.
The problem is: I have a table named Sales_history in my SQL database. This table has following columns: CustomerID, ItemID, Month (from May2012 to April 2013), QtyShipped. I am looking to find association between Items and i want to provide recommendation
to the Customer (In this case CustomerID) based on their purchases.
Note: there are around 630 customers and about 34000 products in my table.
My approach:
I marked History_Table as both Key and nested. And in the Key, i checked CustomerID as input and Key whereas in nested, i checked ItemId as Key, input and Predict.
When i run the model, i get a solution but i am not sure if i am configuring it right. Also i am not sure how i can write prediction join query to generate Item recommendations . I am really struggling with
this problem, eagerly waiting for the reply. Thank you.

Hi Tatyana,
Thank you so much for your reply. I have now been able to create the data mining model using association rule and by writing a DMX query, i am able to generate the item recommendations to be given to customers for items they have purchased. However, i have
noticed one thing that in the DMX query, it gives the same item recommendation for any item i put inside the query.
Also, if i put any item in the DMX query from the generated list of recommended items, the output of that query also shows the item that is inputted inside the query.
Here is the query, that i am writing to generate item recommendations
SELECT predictassociation (CrossSellingModelV3.[Ztb Customer Item v3],INCLUDE_STATISTICS,5)
FROM CrossSellingModelV3
NATURAL PREDICTION JOIN
(SELECT
(SELECT '17IS56126' as m )
AS Ms)
AS t
What can be the possible reason behind this? Is this something related to the kind of data i have? In my data, there are 632 distinct customers and 34000 distinct products.
If i execute this query in management studio.
select customer_CD, COUNT(Item_CD) from ztb_Sales_History
group by customer_CD
order by 2 desc
the output shows that there are some customers who have bought just 1 item and also there are customers who have bought 2400 items. i mean the range is very high.

Association Rules - dmardemo.java - DisplayAssociationRules method

Hi, friends!
I'm making some changes in the sample Java demo for the Association Rules - dmardemo.java. I've created another method which contains the name of the model just created before and in this same method, I call the method to display the association rules detected:
public static void restoreRules(String modelNome) throws JDMException {
m_modelName = modelNome;
model = (AssociationModel)m_dmeConn.retrieveObject(
m_modelName, NamedObject.model);
displayAssociationRules(model);
In another class, which is a GUI, I'm trying to call that method to restore all the rules found in the mining process and display them in a jTable Swing component. For this, I've tried to adapt the main method (displayAssocationRules) to do this, as follows:
public static Object displayAssociationRules(AssociationModel model)
throws JDMException {
// DISPLAY TOP-10 ASSOCIATION RULES
Object[] obj = new Object[5];
int contador = 0;
// 1. Set order by confidence DESC, support DESC
OraRulesFilter filter = (OraRulesFilter) m_filterFactory.create();
filter.setOrderingCondition(
new RuleProperty[] { RuleProperty.confidence, RuleProperty.support},
new SortOrder[] { SortOrder.descending, SortOrder.descending }
// 2. Set to return the first 10 rules only
filter.setMaxNumberOfRules(10);
// 3. Retrieve rules
Collection rules = model.getRules(filter);
Iterator iRules = rules.iterator();
while( iRules.hasNext() )
OraAssociationRule rule = (OraAssociationRule) iRules.next();
obj[0] = rule.getRuleIdentifier();
//System.out.print( "Rule " + rule.getRuleIdentifier() + ": " );
Itemset antecedent = rule.getAntecedent();
//obj[1] = antecedent.getItems();
Object[] ante_items = antecedent.getItems();
// sort the items in antecedent to produce deterministic order of items
TreeSet sortedSet = new TreeSet();
for(int i = 0; i < obj.length; i++)
sortedSet.add(ante_items);
obj[1] = ante_items;
Iterator sortedI = sortedSet.iterator();
/*while(sortedI.hasNext())
System.out.print(sortedI.next() + " ");*/
Itemset consequent = rule.getConsequent();
Object[] cons_items = consequent.getItems();
obj[2] = cons_items;
obj[3] = m_df.format(rule.getSupport());
obj[4] = m_df.format(rule.getConfidence());
/*System.out.println("==> " + cons_items[0] + " (support=" +
m_df.format(rule.getSupport()) + ", confidence=" + m_df.format(rule.getConfidence()) + ")" );*/
return obj;
Some parts of the old code are present in that for you to compare what I've done. However, it's not working. What should I do to see the rules generated in the process in a jTable?
Regards
Luis

As you can see in the code above, I've split the code into two parts. However, a problem is happening when I try to restore the rules to the GUI.
"Exception in thread "AWT-EventQueue-0" javax.datamining.JDMIllegalArgumentException: The required argument objectName is null. Supply a non-null value."
It says that I'm not passing any parameters to the method. But, as you can see, in the first method I've created, I took the name of the model and transfers it for the method displayAssociationRules as a AssociationModel objet.
In the GUI, in an event for the button "Restore Rules", I've put this code below:
String modelo = Principal.getModelName(); // where Principal is the main GUI class for the execution of the process.
dmardemo.restoreRules(modelo);// I call the method in the dmardemo class to restore the rules having a String (modelo) as its parameter. That's when the problem happens. Is the argument really null, as the error message says?
Regards
Luis

Hiding Sensitive Association Rule for Sanitization algorithm implementation

Hello Sir,
I am doing my research in the area of Data Mining and my problem is hiding industrial information using Hiding Sensitive Association Rule. If anybody having Sanitization process and algorithm implementation using Java.
If anybody having relate materials, algorithms implementation, documentation and related web address. Please send to my mail id: [email protected]
Regard
Kannan
Message was edited by:
user591845

And your version of Oracle is?
If 10g look into using Transparent Data Encryption (TDE). You can find docs on it at http://tahiti.oracle.com.

More than one conequent in an association rule possible with SQL Developer?

Dear experts
Is it somehow possible to show more than one element in the consequence? According to the article http://docs.oracle.com/cd/B28359_01/datamine.111/b28129/algo_apriori.htm#autoId2 it seems not to be possible:
"Oracle Data Mining supports association rules that have one or more items in the antecedent and a single item in the consequent."
But is it somehow possible to (mathematically?) prove that e.g. xx, yy -> zz is the same as zz -> xx, yy? Or is there any other way to show more consequent items?
For example I have the rule a,b,c -> d, e. How can I find this rule with the limitation of a single element in the consequence?
Any help will be apreciated!
Thanks in advance.

Hi,
The Oracle AR model only has one consequent.
You can, however, write queries to extract out rules of interest that are filtered by both antecedent and consequent items along with other metrics.
See the GET_ASSOCIATION_RULES pl/sql api doc: http://docs.oracle.com/cd/E11882_01/appdev.112/e25788/d_datmin.htm#ARPLS65840
Here is an example of such a query:
SELECT t.rule_id rule_id,
t.rule_support rule_support,
t.rule_confidence rule_confidence,
t.rule_lift rule_lift,
t.antecedent,
t.consequent,
t.number_of_items rule_length,
t.antecedent_support rule_antecedent_support,
t.consequent_support rule_consequent_support
FROM TABLE(dbms_data_mining.get_association_rules('SALES62992_AS', 100, NULL, .10, .01, 5, 1, dmsys.ora_mining_varchar2_nt('RULE_CONFIDENCE DESC', 'RULE_SUPPORT DESC'), DM_ITEMS(DM_ITEM('PROD_ID','23',NULL,NULL)), DM_ITEMS(DM_ITEM('PROD_ID','25',NULL,NULL), DM_ITEM('PROD_ID','26',NULL,NULL)),.10)) t
ORDER BY rule_idThanks, Mark

Association Rule : Settings in PL/SQL

I've developed a model in ODM GUI for association rules.
I'm now looking to develop the same in PL/SQL.
I need to know how to specify the case id that has 2 attributes (CUST_ID and TIME_ID) and I have the PROD_ID as the ITEM ID. I have the following settings table and PLSQL
BEGIN
INSERT INTO assoc_sample_settings (setting_name, setting_value) VALUES
(dbms_data_mining.algo_name, dbms_data_mining.ALGO_APRIORI_ASSOCIATION_RULES);
INSERT into assoc_sample_settings (setting_name, setting_value) VALUES
(dbms_data_mining.prep_auto, dbms_data_mining.prep_auto_on);
INSERT into assoc_sample_settings (setting_name, setting_value) VALUES
(ODMS_ITEM_ID_COLUMN_NAME, ‘PROD_ID’);
END;
DBMS_DATA_MINING.CREATE_MODEL(
model_name => 'ASSOC_MODEL_2',
mining_function => dbms_data_mining.association,
data_table_name => 'SH.SALES',
case_id_column_name => ‘CUST_ID, TIME_ID’,
target_column_name => null,
settings_table_name => 'assoc_sample_settings');
Is this correct? for setting the CASE ID to 'CUST_ID, TIME_ID', is this correct and/or in the correct place
Also the setting of the PROD_ID also correct?
Do I need to use the ODMS_ITEM_VALUE_COLUMN_NAME setting ?

Thank you for your reply, but it is still not working. There is the code that I have used for setting up and running. What is missing or incorrect with the following. The data is from the SH.SALES table.
Settings Table
BEGIN
INSERT INTO assoc_sample_settings (setting_name, setting_value) VALUES
(dbms_data_mining.algo_name, dbms_data_mining.ALGO_APRIORI_ASSOCIATION_RULES);
INSERT into assoc_sample_settings (setting_name, setting_value) VALUES
(dbms_data_mining.prep_auto, dbms_data_mining.prep_auto_off);
INSERT into assoc_sample_settings (setting_name, setting_value) VALUES
(dbms_data_mining.ODMS_ITEM_ID_COLUMN_NAME, ‘PROD_ID’);
COMMIT;
END;
Create the view
CREATE VIEW ASSOC_DATA_V AS (
SELECT RANK() OVER (ORDER BY CUST_ID, TIME_ID) CASE_ID, t.*
FROM SH.SALES t );
Create the model
BEGIN
DBMS_DATA_MINING.CREATE_MODEL(
model_name => 'ASSOC_MODEL_2',
mining_function => DBMS_DATA_MINING.ASSOCIATION,
data_table_name => 'ASSOC_DATA_V',
case_id_column_name => ‘CASE_ID’,
target_column_name => null,
settings_table_name => 'assoc_sample_settings');
END;
BEGIN
ERROR at line 1:
ORA-40104: invalid training data for model build
ORA-06512: at "SYS.DBMS_DATA_MINING", line 1798
ORA-06512: at line 2
Any ideas what is causing this?

Association Rule Model Fails to Build

Hi all
I am running the association rules model (java api) and sometimes when I use attributes from lower hierarchies the model fails to complete and runs for
ever. In addition when I stop the process from netbeans the hard disk indicator remains permenantly on and my computer is really slow and I am unable to access anything. My attributes are quite long strings (include also gaps). Do you think that affects the model?
Thank u
K

Based on the number of rows and transactions, you are averaging 23.5 items per transaction. With only 80+ items and a few value combinations for each, my guess is that the baskets are quite dense. Many of the transactions will contain a decent-sized portion of the item name-value combinations.
Association rules has a parameter to limit the length of the rules that are generated. Have you set this to try limiting to shorter rules? Have you tried a maximum of length 2 to see if it completes? My guess is that the density of the data leads to exponentially larger combinations of rules as the length of the rule increases, and this requires more memory.
Please try to constrain the rule length to experiment. Once you have short rules (single antecedent item), take a look and see how many rules and itemsets are generated at your provided support and confidence levels (support will constrain itemsets, and support plus confidence will constrain rules). Try to increase the maximum rule length by one more, and see how fast the count of rules and itemsets expand.
This should help understand more about your data and the correct choice of algorithm parameters.
Ari

Update rule problem - validation of "sales/cost w/ tax" keyfigure

BW Gurus,
    Hi to all, i have this update rule problem at "sales/cost w/tax" keyfigure here is the senario.
    Our Goverment mandatory implemented an additional 2% tax from the original 10%, this will affect our report on sales, and also the BW "sales/cost w/ tax" key figure.
    My question is How can I validated the effectivity of the new tax? i have tax 10% from previous sales and 12% on the current sales. What "date field" can I use to validated this. I am using /BIC/CS2LIS_13_VDITM stucture to get the data i need.
Thanks in Advance
Joven

Hi,
Till to day how are extracting the data for tax(original 10%) is it available directly in 2LIS_13_VDITM ?
Usually all taxes( condition types) can be extracted by the data source 2LIS_13_VDKON.Discuss with SD team, they may give the condition type used for different taxes.
With rgds,
Anil Kumar sharma .P

Interpretationg of unformatted association Rules

Hi,
I have sucessfully built a Association Rule Model. I viewed the Association Rules created by the model using the following query:
SQL> SELECT rule_id, antecedent, consequent, rule_support,
2 rule_confidence
3 FROM TABLE(DBMS_DATA_MINING.GET_ASSOCIATION_RULES('Asso_Demo'));
Can someone tell me how to interpret the unformated rules in the absence of Oracle Data Miner?

I also would like to transform this antecedent format :
SYS.DM_PREDICATE(SYS.DM_PREDICATE,SYS.DM_PREDICATE,SYS.DM_PREDICATE)
To something readable. I found in the documentation that we can refer to dmnbdemo.sql for generation of formatted rules. Here is the code :
column tname format a14
column tval format a4
column pname format a20
column pval format a13
column priorp format 9.9999
column condp format 9.9999
WITH
bin_label_view AS (
SELECT col, bin, (DECODE(bin,'1','[','(') || lv || ',' || val || ']') label
FROM (SELECT col,
bin,
LAST_VALUE(val) OVER (
PARTITION BY col ORDER BY val
ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING) lv,
val
FROM nb_sh_sample_num)
UNION ALL
SELECT col, bin, val label
FROM nb_sh_sample_cat
model_details AS (
SELECT T.target_attribute_name tname,
TO_CHAR(
NVL(T.target_attribute_num_value,T.target_attribute_str_value)) tval,
C.attribute_name pname,
NVL(L.label, NVL(C.attribute_str_value, C.attribute_num_value)) pval,
T.prior_probability priorp,
C.conditional_probability condp
FROM TABLE(DBMS_DATA_MINING.GET_MODEL_DETAILS_NB('NB_SH_Clas_sample')) T,
TABLE(T.conditionals) C,
bin_label_view L
WHERE C.attribute_name = L.col (+) AND
(NVL(C.attribute_str_value,C.attribute_num_value) = L.bin(+))
ORDER BY 1,2,3,4,5,6
SELECT tname, tval, pname, pval, priorp, condp
FROM model_details
WHERE ROWNUM < 11;
What means this + between parenthesis ? I understand the model_details part but what is the bin_label_view doing ? Is there someone who already adapted this code to association rule models ?

Association Rules - algorithm ?

Hi all,
I have created an association rules model in Oracle 10.2.0.3 and the rules came out fine however i can not understand why Oracle makes all permutations of the items and create rules for them.
For example if i have a shooping basket of items milk,eggs and bread then i get rules like these
if milk = 1 & bread =1 then eggs =1 support - 0.566 confidence 94.555
if milk = 1 & eggs =1 then bread = 1 support - 0.678 confidence 92.89
How does it put items in if and then and what sort order it follows to do so.
Aren't the 2 rules essentially saying the same thing.
Can anyone familiar with the Apriori Algorithm explain how Oracle creates the rules.
Thanks a lot !!

Sorry for the confusion, it was a mistake on my part.The Support is same in both cases, the confidence is different.
One thing that's still confusing to me is how Oracle is implementing the algorithm.Creating a pl/sql package also did not clarify it much.
I could see the internal tables but to actually see the code that creates those tables would be helpful.
I have made some good progress into getting reasonable results but the underlying process is still not very clear.
Thanks,
PB

Association rules - memory issue

Hi everyone,
I'm testing oracle data mining to generate a high number of association rules, starting from a table containing around 100 columns and 1800 lines. I transformed the table in a view as shown with the market basket demo, but I'm still having a memory error each time I'm trying to launch the data mining process.
I've tried with a table containing less columns and lines, and it worked fine.
Is there a way to set ODM to allow it to process this big table and generate millions of association rules without having some memory errors ?
Is it possible to find how exactly the apriori algorithm works, I mean to find if the sql process is only working with the RAM and writes in the database in the end, or if it commits into the database during the process (before exploding memory).
Merry christmas by the way !!!!!

Hi,
thanks again for your reply. I tried the tweak with the shared_pool_size, and I'm still having some memory issues.
Do you know how the model is build, and how it works technically ?
I can see that itemsets and rules are created when you build the model. Is it stored in a procedure (which applies the apriori algorithm), computes the model and then stores the rules generated into the database during commit ?
In this case all the process (model building) is stored in RAM, am I right ?
And that's why the process crash when there are too much data processed. Is it possible to avoid this, I mean commit the rules even during the process to free some RAM space in order to continue the rule generation ?

Association Rules Error - Numeric argument "{0}" is invalid

I am running the sample association rules code on some different data (have changed the properties file to point at my data). The system is generating the association rules (I can see them in the database), but when it gets to the display step, I get the follow exception:
oracle.dmt.odm.MiningObjectException: Numeric argument "{0}" is invalid. Value must be {1}.
at oracle.dmt.odm.rule.RuleComponent.<init>(RuleComponent.java:37)
at oracle.dmt.odm.internal.rule.ARMiningRuleCursor.getNextRule(ARMiningRuleCursor.java:127)
at Sample_AssociationRules.printRuleSet(Sample_AssociationRules.java:352)
at Sample_AssociationRules.displayAssociationRules(Sample_AssociationRules.java:381)
at Sample_AssociationRules.main(Sample_AssociationRules.java:171)
I am running 9.2.0.1.0 on Windows XP and haven't applied any patches yet.
Any help appreciated,
James

Please repost on the PL/SQL OTN forum. This forum is XMLDB functionality specific.

Association rules visualization using R

Hi,
Using the arulesViz.plot() package, plotted an interactive group plot for the association rules .
Is it possible to view this interactive group plot via HTML using R.
Any pointers would be really helpful.
Thanks,
Swathi.

Swathi,
Did you look at the packages in the Reproducible Research CRAN Task View?
http://cran.r-project.org/web/views/ReproducibleResearch.html
Several package, including R2HTML, hwriter and ReporteRs contains functionality to produce HTML documents.
Regards,
Sherry

Association rules java code

Hi
I am trying to run the demo java code for the association rules
but it doesn't import everything. The following imports give
an error.
import javax.datamining.ExecutionHandle;
import javax.datamining.ExecutionState;
import javax.datamining.ExecutionStatus;
import javax.datamining.JDMException;
import javax.datamining.MiningAlgorithm;
import javax.datamining.MiningFunction;
import javax.datamining.NamedObject;
import javax.datamining.SortOrder;
import javax.datamining.association.AssociationModel;
import javax.datamining.association.AssociationSettings;
Any ideas?
Thank u very much
K

------SOLVED-----

Association Rules problem

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