Hi Jade! I have 18,652 observation and 1,841 cases.
Cielo
On Mon, Oct 12, 2009 at 8:46 PM, Jade Redoblado
<[email protected]> wrote:
> How many observations do you have, Cielo?
>
> On 10/13/09, Cielo Magno <[email protected]> wrote:
>> Hello everyone,
>>
>> I am hoping someone will be able to help me with my problem. I am new
>> with Stata and I am trying to run the -asclogit- command. The model
>> always results in non convergence because of collinear variables.
>>
>> I want to start with a simple model, just 1 alternative-specific
>> variable and 1 case-specific variable but I can’t even get pass it.
>> This is the command I am using:
>>
>> . asclogit choice price2, casevars(age) case (id) alternative (alter)
>> iter(5)
>>
>> This is how my data looks like. There are 11 products, my
>> alternative-specific variables are the price of the product and the
>> amount of money they spent on advertising every month.
>>
>> I tried to replace price2 with the advertising variable and the result
>> is still the same. I also tried creating a dichotomous variable (by
>> transforming my advertising variable into a dichotomous yes/no
>> variable) and using it as the alternative-specific variable but the
>> result is the same – non convergence.
>>
>>
>> +-----------------------------------------------------+
>> | choice price2 age id alter total_ads |
>> |-----------------------------------------------------|
>> 1. | 1 110 83 33 product1 15488033 |
>> 2. | 0 92 83 33 product2 11891267 |
>> 3. | 0 101 83 33 product3 0 |
>> 4. | 0 77 83 33 product4 0 |
>> 5. | 0 82 83 33 product5 49783.33 |
>> 6. | 0 104 83 33 product6 27916.67 |
>> 7. | 0 122 83 33 product7 21012.50 |
>> 8. | 0 168 83 33 product8 166.67 |
>> 9. | 0 107 83 33 product9 0 |
>> 10. | 0 58 83 33 product10 0 |
>> 11. | 0 153 83 33 product11 0 |
>> |-----------------------------------------------------|
>> 12. | 1 110 61 37 product1 15488033 |
>> 13. | 0 92 61 37 product2 11891267 |
>> 14. | 0 101 61 37 product3 0 |
>> 15. | 0 77 61 37 product4 0 |
>> 16. | 0 82 61 37 product5 49783.33 |
>> 17. | 0 104 61 37 product6 27916.67 |
>> 18. | 0 122 61 37 product7 21012.5 |
>> 19. | 0 168 61 37 product8 166.67 |
>> 20. | 0 107 61 37 product9 0 |
>> 21. | 0 58 61 37 product10 0 |
>> 22. | 0 153 61 37 product11 0 |
>> +-----------------------------------------------------+
>>
>>
>> I can’t figure out/find a solution to my problem. I am using Stata/IC
>> 11.0 and it is updated. Any help will be greatly appreciated.
>> Thank you very much.
>>
>>
>> Cielo Magno
>> Graduate student
>> Law, Policy & Society
>> Northeatern University
>>
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/statalist/faq
>> * http://www.ats.ucla.edu/stat/stata/
>>
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
