Hi,
I was thinking about your tensor notation desire.
[created]x[knows]^
is equivalent to:
V().out(‘created’).in(‘knows’)
In general, we could do stuff like in this article:
https://arxiv.org/abs/0806.2274 <https://arxiv.org/abs/0806.2274>
We just map all the presented algebraic operations over to a syntax that can
then be compiled to Gremlin bytecode.
Marko.
http://markorodriguez.com
> On Nov 9, 2016, at 6:52 PM, Marko Rodriguez <[email protected]> wrote:
>
> Hi,
>
> Check it out:
>
> https://gist.github.com/okram/c9e7dc6e51fcf067b9d77c6c4ea094da
> <https://gist.github.com/okram/c9e7dc6e51fcf067b9d77c6c4ea094da>
>
> The code is pretty dead simple:
>
>
> https://github.com/apache/tinkerpop/blob/9b15e90a651383bc7ab0c014f1492bbf70bc3848/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/g2/g2Parser.java
>
> <https://github.com/apache/tinkerpop/blob/9b15e90a651383bc7ab0c014f1492bbf70bc3848/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/g2/g2Parser.java>
>
> Right now I’m manually testing using text files on my Desktop. However, you
> can see how easy it is to interact with the parser.
>
>
> https://github.com/apache/tinkerpop/blob/9b15e90a651383bc7ab0c014f1492bbf70bc3848/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/g2/g2ParserTest.java
>
> <https://github.com/apache/tinkerpop/blob/9b15e90a651383bc7ab0c014f1492bbf70bc3848/tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/g2/g2ParserTest.java>
>
> Marko.
>
> http://markorodriguez.com <http://markorodriguez.com/>
>
>
>
>> On Oct 20, 2016, at 8:19 AM, HadoopMarc <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> Hi Marko,
>>
>> APL was especially cool for punchcards or VT100 terminals ...
>>
>> I'm always in for more efficient notations for graph analytics. Maybe tensor
>> notation can also provide some inspiration for 2D operations:
>>
>> https://en.wikipedia.org/wiki/Tensor <https://en.wikipedia.org/wiki/Tensor>
>>
>> Cheers, Marc
>>
>> Op donderdag 20 oktober 2016 01:08:18 UTC+2 schreef Robert Dale:
>> Reminds me of brainfuck.
>>
>> On Wed, Oct 19, 2016 at 10:04 AM, Marko Rodriguez <[email protected]
>> <javascript:>> wrote:
>> Hello,
>>
>> Last night I was cruisin’ around Wikipedia and was checking out various
>> programming languages. One in particular caught my eye — APL.
>>
>> https://en.wikipedia.org/wiki/APL_(programming_language)#Game_of_Life
>> <https://en.wikipedia.org/wiki/APL_(programming_language)#Game_of_Life>
>>
>> I thought it would be neat to have different type of syntax to express
>> Gremlin traversals and came up with the following "2D pipes” language.
>>
>> https://gist.github.com/okram/cfb526bf01c36c1e4001de6b3dc0f60c
>> <https://gist.github.com/okram/cfb526bf01c36c1e4001de6b3dc0f60c>
>>
>> Basically, there are “piping” symbols that dictate traverser flow:
>> - ^ / \
>> These pipes link the steps, where commonly used steps have a short-hand
>> syntax.
>>
>> The translator to go from this to Gremlin bytecode seems pretty simple. The
>> internal data structure for the language is:
>>
>> List<List<String>>
>>
>> This give you the 2D matrix. You then can go “up and down” the lists and
>> “left and right” along the tokens, where the - ^ \ / pipes tell you how to
>> move about the List<List<String>> structure.
>>
>> Does anyone think this is cool?
>>
>> Marko.
>>
>> http://markorodriguez.com <http://markorodriguez.com/>
>>
>>
>>
>>
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