BigData / Dataflow DSL

[Suminda Dharmasena]

Some ideas to 

Spreadsheet based computation:

In: [Sheet1][A:C][R1]:Double, [Sheet1][A:C][R2]:Double, [Sheet1][A:C][R3]:Double

Out: [Sheet1:S2][E][R1], [S2][E][R2]

SpreadSheet {

Sheet1 {

     | A | B | C | D = A * B | E

R1 |    |    |    |                 | = [A][R1] * [B][R1]

R2 |    |    |    |                 | = [E][R1] + 1

R3 |    |    |    |                 | 

}

S2 = Sheet1 * 2

}

Ref: http://www.ankhor.com/

http://orgmode.org/

Function

In: A:Double

Out: 0.9 * A + 0.1 * A[1]

A[1] refers to history, i.e., one value ago

--------------------------------------

In: A:Double

Out[Scala]: {

var a = A +1

a + A

}

Rule

In: A, B:Double

Out: if A >100 {B} elif A < 0 {B + 1} else {B - 1}

[Jordan Halterman]

Nice :-) I should probably look at these again when I get back to my desk.

Sent from my iPhone

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[Suminda Dharmasena]

Also maybe something like this:

Graph

in: A, B

out: C

graph {

D = part {

A ~> zip ~> x, y => x + y ~> C

B ~> zip ~> . ~> C

}

}

[Jordan Halterman]

I think we'll have to have a more in-depth discussion about what is feasible once the API is back into shape. Many aggregations require careful considerations of reliability and delivery semantics. I suspect these will have to be implemented in an entirely separate, higher level project that hides some of the configurability of Vertigo's planned messaging so as to enforce the semantics necessary to perform exactly-once aggregations.

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[Oliver Rolle]

@Suminda: do you know http://nodered.org/ and http://noflojs.org/ to build graphs visually?

[Suminda Dharmasena]

Seen them before. Why?

[dgo...@squaredfinancial.com]

Just to mention jointjs in passing to you in case you haven't seen it, it is quite a nice backbone-based html5y diagramming lib and particularly its discrete event system shapes might be quite interesting in context . We were using it in-house for some (not vertigo as such) stuff.

http://www.jointjs.com/demos/devs