Live data from Hacker News

Ask HN: What info do you web scrape for?

news.ycombinator.com

91–100 of 115 posts

Re: Ask HN: What info do you web scrape for?

#91

Earlier quoted context omitted.

@allegory could you share the the script with us ?

Would love to but not at the minute because it has hard coded credentials for eBay API in it. It's on my list as a TODO to tidy it up. Will stuff on github and post a Show HN on it soon :) I've got one that monitors amazon prices for sudden lows as well.

That ll be great ! cant wait !

Re: Ask HN: What info do you web scrape for?

#92
post #51

I just started getting into scaping (mostly been using import.io) mostly because it is a complement to what I really care about - data visualization. I've gotten a ton of interest for my side project and despite that I haven't opened the beta I'm still worried that it won't be as lucrative as creating some niche reporting services for various verticals (real estate, auto, etc). Essentially data that is very tabular a…

Machete.io is awesome!

Re: Ask HN: What info do you web scrape for?

#93
post #33

A while ago, I had the idea of creating a travel site that catered to the group of people that enjoy traveling but aren't bound by time (i.e. I want to go to X, but I don't care when -- just show me the cheapest weekend for the next 3 months). Anyway... it turns out that flight APIs are ridiculously non-existent. I ended up scraping two different airline sites, but since it was against their terms, I never took the s…

So, Skyscanner? (Pick'Whole month' / 'Whole year' for the date).

This is the first I've heard of Skyscanner, and they kind of get what I was going for, but I want more of a "set it and forget it" type of service -- something where I can enter in the closest airport and a list of cities I want to visit, and every time I log in I'll see the prices for those cities over the next several months (or get alerted via email, etc.).

Re: Ask HN: What info do you web scrape for?

#94

A while ago, I had the idea of creating a travel site that catered to the group of people that enjoy traveling but aren't bound by time (i.e. I want to go to X, but I don't care when -- just show me the cheapest weekend for the next 3 months). Anyway... it turns out that flight APIs are ridiculously non-existent. I ended up scraping two different airline sites, but since it was against their terms, I never took the s…

The hospitality and travel industries are very slow to update their technologies. I used to work with Ritz Carlton and St. Regis and even those brands are practically in the stone age, so I can't imagine how scraping for flight info would go. I've thought of even building a simple event aggregator for some friends in the industry and they are blown away that it's possible. Then I remember how many venues are in citie…

Completely agreed on the "lag in technology" -- couple that with the fact that even if you do manage to book a flight as an affiliate, most providers only give you a flat fee (as opposed to hotel affiliates which tend to give a percentage).

Disclaimer: Those claims were relevant the last time I investigated (>1 year ago). It could have changed by now.

On the plus side, building out the flight tool really endeared me to hacking on things - which eventually lead me to leave my last job and co-found something new. :)

Re: Ask HN: What info do you web scrape for?

#95

A while ago, I had the idea of creating a travel site that catered to the group of people that enjoy traveling but aren't bound by time (i.e. I want to go to X, but I don't care when -- just show me the cheapest weekend for the next 3 months). Anyway... it turns out that flight APIs are ridiculously non-existent. I ended up scraping two different airline sites, but since it was against their terms, I never took the s…

Sabre just opened their API to the public. Not sure if it's paid or not but we were going to do this exact idea for YC Hacks.

Re: Ask HN: What info do you web scrape for?

#96

There is a closet industry for scraping any sort of data that can move markets. Fed, crop, weather, employment,etc. Anything that is released at a certain time on a fixed calendar, you can bet that multiple parties are trying to scrape it as fast as possible. If you can scrape this data( the easy part), put it in a structured format( somewhat hard) and deliver it in under a few seconds(this is where you get paid) the…

A bit off topic but, if I were to scrape such data except without intention of selling it, instead using it myself... How fast are stock markets? Surely, I would know that the price of stock will increase in the next few days too and buying that stock after 1 hour, say, news hit a major news site, that would still profit me? If not, why? I mean surely you can find someone selling that said stock at all times, no ?

edit: replaced mysql with myself

Re: Ask HN: What info do you web scrape for?

#97
1. Monitoring competitors. By monitoring product/service offerings close to my own operations, I can get bizdev people on the phone and speak to partners when I see indications in the public marketplace that someone has a better sourcing deal than I do. Haven't done this in five years or so.

2. Gathering basic data that should be freely available anyway (like currency exchange rates, global weather, etc.). Always this is done carefully and with a light touch, with maximum respect for load inferred on targeted systems. Again, haven't bothered in about five years.

3. Automating content acquisition. For search engines, media libraries, etc. This is more like ten years ago. These days there's so little call for it... maybe if I ran a boutique hotel chain in a copyright-isn't-respected jurisdiction and wanted to provide a fat library of in-room entertainment...

Re: Ask HN: What info do you web scrape for?

#98

A while ago, I had the idea of creating a travel site that catered to the group of people that enjoy traveling but aren't bound by time (i.e. I want to go to X, but I don't care when -- just show me the cheapest weekend for the next 3 months). Anyway... it turns out that flight APIs are ridiculously non-existent. I ended up scraping two different airline sites, but since it was against their terms, I never took the s…

Sabre just opened their API to the public. Not sure if it's paid or not but we were going to do this exact idea for YC Hacks.

Oh wow, how did I miss that? I looked at sabre when I first started scraping, but the application process to just look at the APIs was exhausting.

Thank you!

Re: Ask HN: What info do you web scrape for?

#100
post #20

Earlier quoted context omitted.

How do you use a probabilistic approach to scraping data? Were you able to get a low number of false positives?

Sorry for the confusion. They are used for "merging" scraped data from various sources, not in the scraping process itself. For example, they help in figuring out if similar-sounding listings on related websites refer to the same "thing". If interested, take a look at this (and related) papers: http://www.cs.ubc.ca/~murphyk/Papers/kv-kdd14.pdf

That makes more sense. Thanks! I'll check out the paper. I was hoping you had some revolutionary new scraping method.
Post reply on HN