Presenting next meeting: Any takers?

[madelaine]

Hope everyone's having a good summer and staying as cool as
possible...

Our next meeting is August 20th 2 to 3:30pm, at the Kansas City Public
Library (Plaza Branch), in the large
meeting room (projector built in). The room is located past the front
desk, take a right, on the left before the children's section (by the
cow). Also known as where they have toddler storytime.

I'd like to line someone up to present, please let me know if you're
interested.

Maybe everyone else can bring the name of a book, blog, or other
source for R / data analysis information to share with the group.

I'll be traveling prior to the meeting, so if you don't hear from me,
it's still on!

http://maps.google.com/maps?q=kansas+city+library+plaza+branch&fb=1&gl=us&cid=0,0,17461243249108068196&z=16&iwloc=A

-Madelaine

[Nathan Stephens]

Madelaine,

Sorry I missed the last meeting. I came down with a cold. I think an interesting topic would be R connections (there are a bunch of them -- ROracle, Rpsql, etc.). I've been playing around with Googleprediction API, and that might be worth a discussion.

--Nathan

[Madelaine Gogol]

That sounds interesting. You can talk a little bit about that, and
then everyone can discuss other R connections. Sounds good to me!

[Bob Prue]

I'll be there, and Toddler Story Time sounds right as far as I'm concerned.

Bob

[madelaine]

Just a reminder, 2 pm today, Plaza branch, see you then.

> http://maps.google.com/maps?q=kansas+city+library+plaza+branch&fb=1&g...
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[arielpaulson]

Nuts! So close to me this time, but I won't be able to make it...

Ariel


madelaine wrote:

Just a reminder, 2 pm today, Plaza branch, see you then.

[Madelaine Gogol]

Good to see some familiar and some new faces today at R group. The
plaza branch is good, but the projector left something to be desired
(lacked focus, had to be operated with a stick). Maybe we could keep
meeting there but ask Chris to keep bringing his and have the library
one as a backup.

Brian will be presenting next time (tentatively scheduled for October
1st, 2pm) on ggplot2.

-Madelaine

[Nathan Stephens]

All,

Below are my notes from our discussion today.

--Nathan

References
    http://code.google.com/apis/predict/docs/hello_world.html
    http://code.google.com/p/google-prediction-api-r-client/

Requirements
    Google account
    Prediction api
    Storage api
    Free - 100 req/day; 5 mb trained/day
    Paid -10,000 req/month; $0.002/MB trained (100 MB maximum)
    Billing enabled

Methods
    Univariate response, classification or regression
    Missing values - changed to blank or zero

Setup
    R packages: json, RCurl, googlepredictionapi
    GSutil and some simple bash scripts

Data Requirements
    Example (i.e. target or response) in the first column
    Features (i.e. predictors) in all other columns
    CSV, characters quoted
    No headers
    R: write.table(iris[,c(5,1:4)],'iris.txt',col.names=F,row.names=F,sep=',')

Hello world
    > gsutil mb gs://kcrug2
    > gsutil cp iris.txt gs://kcrug
    > ./oauth-train.sh kcrug/iris
    > ./oauth-check-training.sh kcrug/iris
    > ./oauth-predict.sh kcrug/iris "\"6,3,5\""

R (401 error)
    require(rjson)
    require(RCurl)
    library(help=googlepredictionapi)
    my.model <- PredictionApiTrain(data="gs://kcrug/iris",verbose=T)

R Wrappers (alternative)
    library(help=predictionapirwrapper)
    token <- GetAuthToken(email="nwste...@gmail.com", passwd="xxxxxx")
    GoogleTrain(auth_token=token$Auth, mybucket="kcrug", mydata="iris")
    GoogleTrainCheck(auth_token=token$Auth, mybucket="kcrug", mydata="iris")
    GooglePredict(auth_token=token$Auth, mybucket="kcrug", mydata="iris", myinput=c(5,3,6))

On Sat, Aug 20, 2011 at 11:18 AM, arielpaulson <arielp...@gmail.com> wrote:

[Earl F. Glynn]

Thanks for posting these notes.

 

I'll try to stay home in October instead of leaving town on the day of the meeings <g>.

 

efg

Earl F Glynn

Overland Park,

---

From: kansas-city-...@googlegroups.com [mailto:kansas-city-...@googlegroups.com] On Behalf Of Nathan Stephens
Sent: Saturday, August 20, 2011 10:38 PM
To: kansas-city-...@googlegroups.com
Subject: Re: Presenting next meeting: Any takers?