Forecasting TimeSeries From Cube
Mar 30, 2007
I've saw many tutorials about using TimeSeries. But all of them using a table. But I'm using a cube to represent data. So I'm trying to build forecast from cube, but it doesn't so good as in could be.
I've got the same problem as desribed in Microsoft's tutoral Adventure work. So I need to forecast a series of sales.
The problem is that I can't create second key value, as it shown in tutorial. So I can't split good's sales. I have created dimentions for goods and for time. So cube's browser shows me very handsome view, but the problem with mining model still remains...
Please, help me! How can I solve this problem?
Can I create a separate table from cube to build forecast by this table?
Or I can solve this problem not using tables?
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Apr 3, 2007
Whether can cube be the data source of TimeSeries algorithm?
If it is ture,how can id do?
Thanks���
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Jan 2, 2007
Hi I installed the add-in for excel data mining but when i try to select a table, in the tab of analyze, dont have any properties. please help me.
carlos of southamerica
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Jul 13, 2006
Hi,
We are trying to forcast product sales for next three months based on their sales for previous 12 months. In this case, Microsoft Time Series algorithm requires the sales data to be present for each product for past 12 months (???). However, our products have typical life span of 6 months and obviously the new products will not have sales before they were added. Any help will be very much appreciated.
Thanks
Riju
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Jul 7, 2015
I have built an analysis cube and I am wondering how I can now somehow add in some kind of forecastinbg to it?
I have a time dimension in years, quarts, months, days.
Is there a way I can show forecasting calculations for future dates?
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Jan 31, 2008
In order to setup my forecasting mining model I have created a special view that runs against my fact table and creates time series on the level I need.
Code Snippet
Select DFUKEY, DATE, QTY from Dim_FACT where DFKEY like '020%'
So I get the following input fr my model:
time series key (e.g. DFUKEY)
date (time key)
QTY (to be predicted)
For testing purposes I created a small view (similar to AdventureWorks) that only contained a few time series. The model was created and processed in ~2 minutes or less. The viewer came up almost immediately and I was able to see results.
Now my real view has about 25000 time series I need a forecast for and that I also like to review in the viewer. If I create a mining model against that bigger view the processing takes ~15m or so and the viewer is likely to time out.
The worst part thought is when I try to get the forecast for a time series (see query below) it takes minutes before the answers come back.
Code Snippet
SELECT FLATTENED [DFUKEY], PredictTimeSeries([QTY], 12)
FROM [TimeSeries]
WHERE [DFUKEY] = '02078147AG'
I would understand if without the WHERE clause it would take long but as is?
I am pretty sure I created the model the right way so I wonder if somebody can give me recommendations as to how forecast larger numbers.
Finally I intend to call the foarcast for a particular series using an Action from within a cube.
Thanks in advance.
Dirk
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Feb 14, 2008
Hi All,
Does anyone know how is forecasting defined in the Data Mining Add-In (Excel)? If we look to the web, we would see different Forecasting Standards. What specific Forecasting algorithm and standards used in the Forecasting in the Data Mining Add-In (Excel)?
Regards,
Joseph
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Mar 8, 2007
Hi,
I have prepared a time series model. The model works well with few cases. Answering time raises extremly after processing the model with all cases.
In a book I read sth. about a cahing possibilty. But how can this be defined in Visual Studio ?
Thanks in advance
Achim
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Sep 13, 2006
Hi,
I mined a small-size table using TimeSeries. There are only 3 columns in the mining model : payment, region_name, and period. Payment is of type floating-point designated as predicted column, region_name is of type string/text designated as key, period is of type numeric(6) with year and month designated as key time. Build and deployment are successful. The value of period spans from 200501 to 200603, with PERIODICITY_HINT is set to {12}.
(1) However, the viewer displays the result in percentage, not the values of column payment.
How can I instruct the viewer (or Visual Studio) NOT to display it on percentage?
(2) Two key-values are missing. In the data, there are 8 key-values. But the viewer displays only 6 of them. How can this be?
Thank you,
Bernaridho
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Apr 1, 2007
There are two questions.
One is whe TimeSeries can predict text content。
The other is whether Sequence Cluster can predict multi columns.
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Sep 3, 2006
Revenue 4 GB (4086 MB)
Partitioned into 12 partitions (about 340 MB each)
The count of records : almost 16.8 millions
Each partition has approximately 1.4 million records
Algorithm chosen : TimeSeries
Time Key : Period (6 digits integer with values range from 200501 to 200512,
integer values)
(Non-time) Key : Telephone number, variable-length string/text, max 15 char
Input-and-predicted column1 : SLI007
Input-and-predicted column2 : SLI008
I have set the value for PERIODICITY_HINT to {12}. I created the project 3
times in 3 machines. All fail. The error message is the same :
Internal error : An unexpected exception occured.
Internal error: An unexpected error occurred (file 'dmtimeseries.cpp', line 646, function 'DMTimeSeries::ProcessCaseTS3and4').
I searched for the file in C:Program FilesMicrosoft SQL Server and its
subfolders. I didn't find it.
What causes the error?
I tested 3 machines to check whether the performance of the machine is the culprit.
Single processor Pentium M 2.0 GHz with 2 GB Memory
Double processor Xeon 2.4 GHz with 3 GB Memory
Double processor Xeon 3.4 GHz with 4 GB Memory
But the project in all those machines return the same error.
Any idea?
Thank you
Bernaridho
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Nov 16, 2006
Using the TimeSeries algorithm, how do I forecast more than one time period ahead? I read in you book on page 182 that PredictTimeSeries function can take a parameter for the number of time periods you want to predict. Fore example, SELECT PredictTimeSeries(Bread,5) tells the algorithm to predict the next 5 time periods. Can you tell me how to change that parameter using the graphic interfaces?
Thanks!
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Sep 18, 2007
I€™m having a problem with Excel 2007 DM and SQL 2005 and I hope someone out there has a solution.
Consider the following environment:
Windows XP SP2 or Windows Vista, Excel 2007, Data Mining Add-in, SSAS 2005 (with session mining models enabled, an AdventureWorksDW cube deployed and drill-through actions available).
Now take the following steps:
1. In Excel 2007 set up a connection to SSAS
2. Connect to the cube and create a new pivot table report (drag and drop whatever you like)
3. Right-click on one of the cell values in the data region and either select a drill-through action, or, select Show Details in the context menu
4. Ensure that you have at least 10 detailed records that are generated on a new worksheet page; you should have a time-based column in your detailed records
5. Select the table of detailed data, then select the Analyze tab (within the Table Tools grouping) which appears in the topmost menu above the ribbon
6. Click the Forecast button in the ribbon and choose both the field which you want to predict as well as the time-based column (from step 4) as well as the number of time periods to forecast
7. Finally click OK.
1. Having followed these steps on both WinXP SP2 and Vista, I keep coming across the exception: HResult:0x800A03EC. Any ideas as to why this exception pops up? If I was using a normal table of data (which was not generated from a Show Details or drill-through action), then the Forecast button works fine.
I googled it and thought the localization settings for SSAS 2005 and Excel 2007 needed to be the same (initially they weren€™t). I€™ve tried removing the auto-filters which appear atop each column in the detailed data table prior to clicking the Forecast button, and, I€™ve also tested for a series of data across a number of time periods with the same result.
Also, a colleague of mine discovered that the column headers that appear by default from a drill-through start with "$[", and, in removing them the Forecast function appears to work.
I would have thought there would be a seamless transition in Excel 2007 between data retrieved from a cube and the DM Add-in featueres (or at the very least, a more meaningful exception message than the one presented).
Is there something I€™ve missed, or, is there a KB article I haven€™t come across yet? As I know for a fact that the problem is reproducible, is there a fix to this problem on its way to us? Is there a useful workaround that doesn't require manual intervention?
Thanks,
A.
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Dec 1, 2006
hi,I am a novice SSAS Programmer.I need a prediction Query in time series algorithm, so that it should predict for a particular date.I dont know how to use where condition in a prediction Query.
Thanks
Karthik
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May 16, 2007
First of all I would like to politely greet everybody as I'm new on that forum and new to Data Mining in fact.
To introduce myself I can say I'm a student of Computer Science and I'm trying to use Time Series algorithm for weather analysis. I know that forecasting weather is a hopeless task even for the fastest computers in the world but what I'm trying to do is a kind of aposteriori analysis of historical data to notice some dependencies or characteristic weather behavior on a specified region and perhaps make some short time predictions.
I tried Time Series Algorithm although I have some doubts about methodological justification of this choice (if You have any critical comments please share them with me). But my main questions are about the usage of the algorithm itself:
I've read the documentation and a tutorial on this page for historical predictions but I still don't know what exactly are HistoricalModelCount and HistoricalModelGap. I know that my historical predictions are bounded by a €“ HistoricalModelCount*HistoricalModelGap*, but it's a rather operational knowledge... The explanation is always clouded with an €śinternal model€? phrase. Can You point me to a document where I can find some more detailed information? (What is the form of the model? How is it built? etc.)
Periodicity Hint. How should I treat these optional values? Are they other possible periods of data? I have data about weather measurements made every six hours for thirteen years** so is it a good choice to set this parameter to {365*4,4} (The first goes for a year and the second for a day)?
This is a technical question and I'm really ashamed of myself that I bother You with it. On the time chart in a model Viewer I can see date from the last year only. Zooming out/in, clicking insanely on every pixel on the screen, did not give any result (apart of broken mouse buttons). Is is possible to browse that data in mining model viewer chart?
Thank You in advance for Your replies!
*This formula suggests how this parameters could work but I would like to know it for sure €“ don't want to make some awful mistakes in my project. :-)
**Of course I plan to reduce the amount of data but the period will stay.
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Apr 1, 2007
The first question is how to of TimeSeries Algorithm?
Using SQL Server 2005 TimeSeries Algorithm ,I build a data mining model.But after three days,it is still training.The data has 2,200,00 rows.
So what can i do to improve the processing speed.
Thanks!
The second question is parameters in Data Mining Query Task.
Data Mining Query Task is used to get data from data mining model.In the mining model form, i choose a mining model . And in the query form,i wrote a dmx ,"select flattened top 100 predicttimeseries([Xssl],1)
from [Time Series XSSL]".Last i choose a table that is for the data from mining model.
If the "100" is variable , how can i do ?
Thanks a lot!
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Aug 23, 2015
I am just starting out using CUBEMEMBER/CUBEVALUE formulas in excel linked into a sql olap db - using this method for some custom reports where pivot tables are not suitable.
The time dimension values include Months, Quarters and Years and the CUBEMEMBER formulas like
=CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[1].&[1]") work fine - 1st quarter 1st month etc.
Is there a straightforward notation to aggregate months or do I need to use a plus sign to add a number of CUBEMEMBER formulas together.In other words - Is there an easier way of for say jan to july 2015 totals than
=CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[1]") + (CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[2]")) + (CUBEMEMBER("OLAPCUBE","[Time].[Time].[Year].&[2015].&[3].&[7]"))
I haven't tested this but have assumed it works but a bit long and clumsy.
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May 19, 2015
I have problems creating a cube with AMO.
I can add the cube to the database object and fill it with dimensions and a measuregroup (see code below).
If I call cube.Update() it says something like "Error in meta data manager. Cube has no measuregroups." (getting the message in german language)
The error in Microsoft.AnalysisServices.OperationException.Results.Messages is -1055653629
I can't find any documentation about this (or any other) error code in Microsoft documentation.
Here's my Code:
Cube newCube = database.Cubes.Add("MyCube","MyCube");
newCube.Language = 1031;
newCube.Collation = "Latin1_General_CI_AS";
CubeDimension dim = newCube.Dimensions.Add("dim1","dim1","dim1");
CubeAttribute attrib = dim.Attributes.Find("dim1Attr1");
[code]....
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May 27, 2008
When I make a call to GetSchemaDataset with a restriction of a cube name with a space in the name of the cube the call fails. Following is a sample of the code: adoRestriction = new AdomdRestriction("CATALOG_NAME", "Contoso Telecom_Contoso"); adoRestrictions.Add(adoRestriction); dataSet = conn.GetSchemaDataSet("MDSCHEMA_CUBES", adoRestrictions); I am running SQL Server 2005 Analysis Services SP2. Is there some way to qualify the cube name in the restriction or is this just a bug? Thanks.
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Oct 20, 2006
Can any body help me to know about cube in dataminig?
How is the cube represented in database?
How to querry the cube?
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Feb 4, 2005
unable to browse the cube - unspecified error - ms sql server
--- even the sps are up to date..
what is the missing link...
thank u
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Mar 3, 2005
I have an archieve cube as .cab file and i have restored my cube into analysis server , but i am not able to browse the datain the cube. My doubt is- Does the cube contains data with it to browse or not? or we have to explicitly enter data at the sql query analyser.
Thanks in advance.
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Sep 8, 2005
Hi ALL,
Just started researching Analysis Services product, and am playing w/ foodmart db (located on my C: drive) and creating cubes and dimensions, etc.
My problem is that I cannot browse any dimensions once they are created. For exampe, for a dimension called product I am getting an error message, "Unable to browse the dimension 'product'. Unspecified error"
Can anyone offer help?
thanks so much,
Alan
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Jan 26, 2004
1.Create a table. The table must contain four columns of your choice and at least ten rows. Create a meaningful example of your own. The last column in the table must be a quantity. Provide output showing your CREATE TABLE and INSERT statements. Also include output showing their successful execution.
2.Create a ROLL-UP query using the table you created in problem #1 Provide output showing your SELECT statements and the resulting output rows. Next use the TRANSCT SQL help function of SQL Server and write definitions of the following SQL statements:
a.IS NULL-
b.GROUPING-
c.AS-
3.Create a CUBE query using the table you created in problem #1 Provide output showing your SELECT statements and the resulting output rows.
4.Create the following CUBE queries using the table you created in problem #1. Provide output showing your SELECT statements and the resulting output rows.
a.A CUBE query with Grouping used to distinguish Null values.
b.A CUBE query showing a multidimensional cube.
c.A CUBE query created using a view. For this problem you must not only create your view but query it and display the results.
5.Create one example of a query using COMPUTE and one example of a query using COMPUTE BY. These queries should use the table you created in problem #1 Provide output showing your SELECT statements and the resulting output rows.
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Feb 24, 2004
I have just started working the 2047 OLAP and came arcross the Analysis Service Limits. It states that the levels in a cube has a limit of 256 and the leves per dimension is 64. I am confused.
What is the definition of (levels in a cube)! and how are the levels in a cube different from (levels per dimension)
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Mar 25, 2004
I am trying to build a cube to monitor the sales performance. My measure is the sale amount. My dimensions include 1) Time 2) Sale hierarchy (salesman, sales office, region), and 3) Product Line. The problem I have is that when the salesman move from one office to another, the sales occured before this movement should continue to be credited to the old office. Only sales happen after the movement should be credited to the new office.
How should I implement the cube to achieve this effectively? We have more that 40,000 sales, about 500 offices, in the company to monitor. So I don't think keeping a copy of the sales hierarchy whenever there is a change is feasible.
Any inputs will be highly appreciated!
Thanks.
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Aug 21, 2007
I have installed SQL Server 2005 on a server which runs Windows Server 2003 with SP2. And I have two client machines, both running Windows XP with SP2. Machine A has a full version of SQL server 2005 installed, including database engine, analysis service server, reporting service server. Machine B only has workstation components installed, BI development studio, SQL Server management studio.
I have developed a couple of analysis service projects and deployed to the server. On machine A, I can connect to the server and browse cubes no problem. On manchine B, I still can connect to the server and see the projects I deployed, even browse dimensions data. But when I browse cubes, management studio will be hanging there, not doing anything. Eventually I will have to kill it. I also opened the projects on machine B from BI management studio and try to browse data from there, it shows 'loading data' and doesn't do anything either.
Does anyone experience this type of issue? It's really frustrating as it doesn't show me any error message.
Thanks for any help.
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Sep 11, 2007
We are using SQL 2005, Visual Studio 2005, SSIS, and SSAS. We have built our Dimensional model in SQL 2005, we have build our packages to complete full refresh of Dimensional model using SSIS. We have built SSAS cube using VS 2005. We built source, data source, cube and dimensions using auto build. We processed cube in VS 2005 by right clicking on solution and click process. Cube was built in Analysis Services. We made some schema changes to model then data changes in SSIS packages. We then pulled up cube in VS 2005 right click on solution and process. Cube is being re-built. After completion we check cube using Proclarity and Excel 2007 and notice the schema changes and data changes did not take. We dropped cube, then deleted data source, dimensions, and cube then re-created data source view and cube auto build then process and now have new schema changes and data changes.
Why is process not working to re-build schema and data changes when we have process FULL selected, Changes only. We even tried rebuild, deploy, and process. What is it we are missing or not doing correctly?????????
Topic
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Feb 19, 2008
Can anyone suggest a case-study/reference links/video demos for creating a cube using Analysis Services and generation of reports using Reporting Services.
Thank You
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Jul 20, 2005
Hi All,I want to create a cube using MSSQL2000 i dont know any thing how tocreate and what is parameter required so if any body help me i will bethankfull to him/her.For information : i have 4 tablescustdetailtable which contain all about a customer as per examplecustomer ID,name,add,CUSTOMERID IS PRIMARYKEY,Proddetail table which contain all about a product meanproductcode,productname,productvalue,dman (dateof manufacture),dexpdate of expire,etc etc PRODUCTCODE IS PRIMARY.Sales this table contain data aboutsale mean sales detailcusomerid,productcode,noofpieces,priceperunit,prod uct name,date ofsale. etc etc SALEID IS PRIMARYKEY,PRODUCTCODE AND CUSTOMERID ISFOREIGNKEY AND PRODUCTCODE IS PRIMARYKEY,and atlast i have a table name stok detail which contain productid,DTOFman and DTofexpire and amount of producthere product id,DTOFman and DTofexpire are foreign key.
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Oct 25, 2007
Is it possible for RS to connect to a Cognos cube?
If so, where can I find information on it especially how security within cognos is evaluated/verified.
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Sep 16, 2007
Hi,
Can anyone explain me that WHAT IS CUBE AND ROLLUP Statments for?? Why to use, Where to use and When to use???
Are they usefull in any point of view from ADO.NET???
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Oct 30, 2006
I had no problem setting parameters with a relational database. But with a cube its so much more difficult. When i check the parameter box in the dataset it gives me way too many options..when i only want 1999, 2000, 2001, 2002, 2003, 2004, 2005 and 2006. Instead, its displaying all the quarters in each of those years, so i get this long list. Is there any way i can fix that. And actually get the parameter to work. Because when i click one, it doesnt look like it queries the report. Whats the process for putting a parameter in the report? Am i missing something?
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