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From Janardhan Pulivarthi <janardhan.pulivar...@gmail.com>
Subject Re: [QUESTION] XOR operations in SystemML. Thanks.
Date Mon, 04 Sep 2017 14:55:54 GMT
Hi all, [XOR symbol]

Now, I gave a sample try for the XOR operator, with caret ` ^ ` symbol.
But, this have been reserved for exponentiation. So, another alternative
would be

1. ` (+) `
2. ` >< `
3. ` >-< `

Thanks,
Janardhan

On Thu, Aug 31, 2017 at 7:38 PM, Matthias Boehm <mboehm7@googlemail.com>
wrote:

> From a scalar operation perspective, you could of course emulate XOR via
> AND, OR, and negation. However, you might want to write anyway a java-based
> UDF to efficiently implement this recursive operator.
>
> Down the road, we can think about a generalization of our existing
> cumulative operations such as cumsum, cumprod, cummax, to arbitrary cell
> computations and aggregation functions, which would be useful for quite a
> number of applications.
>
> Regards,
> Matthias
>
> On Thu, Aug 31, 2017 at 5:59 AM, Janardhan Pulivarthi <
> janardhan.pulivarthi@gmail.com> wrote:
>
>> Hi,
>>
>> The following is an equation (2.4) from the algorithm for the generation
>> of sobol sequences. The authors of the paper have utilized the bitwise
>> operations of C++ to calculate this efficiently.
>>
>> *Now, the question is:* Can we do this at script level (in dml) or we
>> should do it in the `java` itself as a builtin, function to generate the
>> numbers?.
>>
>>
>> ‚Äč
>> Thanks,
>> Janardhan
>>
>
>

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