lwall_mba

We are going through a lot of R scripts to create features before we classify them and it is as anyone with data science experience knows, it is a time-consuming exercise. We work with tabulated data and usually create futures around counts of events, dates, hours, ranks, etc. I am wondering what tools, scripts, libraries do you use to go through this process?

Many services out there use phone books (i.e. white pages, yellow pages, etc.) to reach customers. But, they cost money. Even a few cents per query add up very quickly.

I'm wondering if anyone would be interested in putting together an open repository that we can all use the complete phone books of the USA.

Have you worked on an app for POS published on the Clover, Square, or Oracle marketplaces?

What was your experience in developing and publishing those apps like?

We are trying to evaluate and learn pros/cons about each marketplace, time to publish, support from companies, type of data that can be accessed, encryption, etc.

Hello - I see one requires an invitation to apply, and I suspect the process to get the invitation code works as vetting. But, what is needed after that? Complete business plan? Video by funders like YC? Has anyone heard or gone through the entire process?

I am not an app developer and tried to find an answer for this online without much success.

When storing information about users, would two autonomous apps identify the user by the same id in each respective database?

I install app_1 in my iPhone, how is my user id created in app_1's user db?

Then I install app_2, would the iPhone use the same user id?

Or does the user id completely depends on how it was programmed on each app?

What if those apps use social networks to allow me to sign-in? and I use facebook in both?