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Re: NMF in Mathematica 8

  • To: mathgroup at smc.vnet.net
  • Subject: [mg130689] Re: NMF in Mathematica 8
  • From: "Barrie Stokes" <Barrie.Stokes at newcastle.edu.au>
  • Date: Fri, 3 May 2013 03:49:29 -0400 (EDT)
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  • References: <20130430081845.0BEA769D3@smc.vnet.net>

For what it's worth:

In[1]:= $Version

Out[1]= "8.0 for Microsoft Windows (64-bit) (February 23, 2011)"

data = {{15000, 0.154}, {25000, 0.283}, {35000, 0.402}, {50000, 0.55},
   {75000,
         0.733}, {100000, 0.843}};

In[3]:= nlm01 = NonlinearModelFit[data,
      CDF[ParetoDistribution[khat, ahat], $x], {khat, ahat}, $x];

In[4]:= nlm01["BestFitParameters"]

Out[4]= {khat -> 18243.5, ahat -> 0.902423}

Cheers

Barrie

>>> On 01/05/2013 at 5:38 pm, in message <20130501073814.95A9F6A3A at smc.vnet.net>,
Bob Hanlon <hanlonr357 at gmail.com> wrote:

> I get the same results in Mathematica v 8.0.4.0
>
>
> $Version
>
>
> "8.0 for Mac OS X x86 (64-bit) (October 5, 2011)"
>
>
> data = {{15000, 0.154}, {25000, 0.283}, {35000, 0.402}, {50000, 0.55},
> {75000,
>      0.733}, {100000, 0.843}};
>
>
> nlm01 = NonlinearModelFit[data,
>    CDF[ParetoDistribution[khat, ahat], $x], {khat, ahat}, $x];
>
>
> nlm01["BestFitParameters"]
>
>
> {khat -> 12989.3, ahat -> 0.658768}
>
>
>
> Bob Hanlon
>
>
>
>
> On Tue, Apr 30, 2013 at 4:18 AM, Alan <alan.isaac at gmail.com> wrote:
>
>> I'd appreciate knowing the output in Mathematica 8 of the following 3
>> lines:
>>
>> data = {{15000, 0.154}, {25000, 0.283}, {35000, 0.402}, {50000,
>>    0.55}, {75000, 0.733}, {100000, 0.843}}
>> nlm01 = NonlinearModelFit[data,
>>    CDF[ParetoDistribution[khat, ahat], $x], {khat, ahat}, $x];
>> nlm01["BestFitParameters"]
>>
>> In Mathematica 5 and 9 it is
>> {khat -> 12989.3, ahat -> 0.658768}
>>
>> But I recall getting a different answer in Mathematica 8.
>>
>> Thanks,
>> Alan Isaac
>>
>>




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