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1  Economy / Speculation / Re: ObjectiveBitcoin - A bitcoin sentiment indicator on: April 23, 2013, 04:43:18 PM
Now with 100% more charts!
2  Economy / Service Discussion / Re: ObjectiveBitcoin - automated bitcoin sentiment indicator on: April 23, 2013, 04:42:59 PM
Now with 100% more charts!
3  Economy / Service Discussion / Re: ObjectiveBitcoin - automated bitcoin sentiment indicator on: April 16, 2013, 10:24:29 PM
I hadn't seen that site. Pretty much agree with the weighting though. That's from manually classifying about 1,500-2,000 tweets (so Twitter, not internet generally) as they came in which took a couple of days or so of storing them up. I bet you get that in every couple of hours now!

Yeah right now its receiving ~600 per hour, but that has jumped to several thousand when something big is going down.

Also, Twitter is definitely an (albeit skewed) representation of the internet as a whole, since the vast majority of tweets I'm seeing are linking or referring to news stories, threads in this forum, posts on Reddit, etc., from either helpful bots or users.  So I see twitter as sort of a natural starting point for this type of thing.
4  Economy / Service Discussion / Re: ObjectiveBitcoin - automated bitcoin sentiment indicator on: April 16, 2013, 06:27:19 PM
Are you storing the twitter feed for further analysis? Running any textual sentiment analysis or just tweet volume?

Yes and yes.  The sentiment analysis is done with a probability classifier, so items it isn't sure of get put in a separate bin so I can manually classify them later and update the classifiers with this new knowledge.

Word about Bitcoin is overwhelmingly positive (http://www.whatdoestheinternetthink.net/bitcoin), so I have to run some statistics to see how the current mood compares to past mood.
5  Economy / Service Discussion / Re: ObjectiveBitcoin - automated bitcoin sentiment indicator on: April 16, 2013, 03:59:41 PM
Screenshot on the way to your gmail...

Thanks, the font was just showing up too big, and I didn't plan for that.  Oops.


Hi,

by coincidence, I put something similar together:
https://bitcointalk.org/index.php?topic=177951.0

we should exchange notes Smiley

Patrick


I'll send you a PM in a bit  Cool

I have something similar sitting in a bottom drawer. Just Python and a numerical output, no website as that's not really my thing. I didn't find any useful (i.e. leading) correlations to make it worth developing though. I'll be interested to see if you do.

I wrote a trading bot last year, and with every traditional indicator I could throw at it, its neural network couldn't figure out how to predict price changes.  I would love for this to be a forward indicator, but if not, it might combine well with other indicators.  Worst case scenario it turns out to be a mildly interesting site and I learned a lot about programming  Grin
6  Economy / Speculation / Re: ObjectiveBitcoin - A bitcoin sentiment indicator on: April 16, 2013, 02:06:01 AM
Interesting. Did you train the classifier? How did you get the labels (positive/negative)? Are you using k-grams, bag of words, or something else as features?

I manually classified a few thousand items and trained the classifier(s) on those.  As of now I'm using bag of words, bigrams, and trigrams as features - classification accuracy seems to be pretty decent.
7  Economy / Speculation / Re: ObjectiveBitcoin - A bitcoin sentiment indicator on: April 15, 2013, 11:04:57 PM

Holy crap - how did I miss that!?

That positive-to-negative ratio is about the average that I'm getting, which is comforting.  I'm hoping that the fluctuations in my results will be significant.

Either way though, the search for bitcoin returns ~300 hits, while I'm classifying a few times that amount per hour.  That number will increase as I add more places for the program to search.  My sentiment classifiers are also trained on the specific type of information that they'll be reading, e.g. tweets.
8  Economy / Speculation / Re: ObjectiveBitcoin - A bitcoin sentiment indicator on: April 15, 2013, 10:17:16 PM
A past graph would be nice, to put things in context. Maybe add some distinguished points with important news stories, like google does in trends.

That's definitely coming up!  I was not aware that google trends did that, so I'll check that out for inspiration.
9  Economy / Speculation / Re: ObjectiveBitcoin - A bitcoin sentiment indicator on: April 15, 2013, 10:11:38 PM
Do you also apply weight to each piece of submitted content in accordance with how many people might see that thing, or some other way?

Yes, the functionality to do that is in place, but I'm still revising things and will probably update that pretty soon.  I was thinking about calculating a "global reach" or something like that.
10  Economy / Speculation / Re: ObjectiveBitcoin - A bitcoin sentiment indicator on: April 15, 2013, 09:54:49 PM
Would be cool to see the list of information that it's pulling and what it's considering as positive/negative.

That's definitely something I want to implement.  When I first started out, I was reading every tweet that was coming through, and you get some real gems.
11  Economy / Speculation / ObjectiveBitcoin - A bitcoin sentiment indicator on: April 15, 2013, 09:46:53 PM
Hello everyone,

I released my website www.objectivebitcoin.com earlier today, and I thought it might be of particular use to speculating efforts.

Basically what my service does is collect submitted content from various sites on the interwebs, classifies each bit of information as positive or negative, and compiles its findings into an indicator value.  The indicator is a z-score of averaged sentiment from the past x hours when compared to the distribution of the past y days.  X and Y are variable, as I'm still working on fine tuning the indicator to better correlate with price changes.

Right now the indicator is updating every hour, but I have plans to increase that resolution, as well as develop an API.

Let me know what you think - I'd be happy to hear any feedback you have.
12  Economy / Service Discussion / Re: ObjectiveBitcoin - automated bitcoin sentiment indicator on: April 15, 2013, 06:36:35 PM
I like this a lot.  Bookmarked.

But... while all the math, bots, spiders, & etc. operating behind the scenes appear to work very well, the page itself leaves a bit to be desired.

I'm Firefox 20.0 on Debian.  Can't see the "Price Correlation:" line at all, and I have no way to get to it.  The center box (where all the info is) won't come all the way up to size - there are sliders top and bottom - although it takes up less than 10% of my screen.

Planning an Android app?

Thanks for your feedback!

Interesting, I've tried the layout on a few browsers and they've all looked o.k. ( I'm on Firefox 19 on Ubuntu).  If you get the time, could you send me a screenshot so I know what you're dealing with?  I'm not a web designer by trade, so I'm sure there are things that need worked out.

If there's enough interest then I could probably eke out a mobile app in the future, sure.
13  Economy / Service Discussion / Re: ObjectiveBitcoin - automated bitcoin sentiment indicator on: April 15, 2013, 05:41:18 PM
I like the idea, any thoughts on doing it over bigger time periods?  A day or two seems pretty short.

Yes, that was a preliminary estimate of what I set it at.  I'm going to run some more correlations with price data to figure out what time period works best.  For lack of a better standard, price data is really the only measure I have to go off of to decide how valid the algorithm is...
14  Economy / Service Discussion / ObjectiveBitcoin - automated bitcoin sentiment indicator on: April 15, 2013, 04:44:00 PM
Hi everyone  Grin,

I wanted to release to you a project I've been working on for the past month - www.objectivebitcoin.com.  Basically the goal is to keep up with what people are saying on social media and online communities, automatically classify the seniment of anything relevant, and compile those statistics into an indicator.

A negative value for the indicator means that sentiment is trending negative, while a positive value means that sentiment is trending positive.  The indicator is a z-score of the average sentment rating of the past hour, compared to the average sentiment rating of the past day or two. I did it this way because most of what I'm finding at the moment is overwhelmingly positive.

My algorithm is still fairly basic, and I plan to upgrade that as I work on it.  I'll also calculate a correlation value (with change in exchange rate) based on running the current algorithm on historic data.

I would be grateful for any and all feedback you may have!  I'm here to provide a service to the Bitcoin community.
15  Other / Beginners & Help / Re: Bitcoin is a force for democracy...and one which can kill the banksters on: April 15, 2013, 04:24:58 PM
naked speculative greed

I like this way of putting it.
16  Other / Beginners & Help / Re: Bitcoin is a force for democracy...and one which can kill the banksters on: April 15, 2013, 04:16:36 PM
I don't think making money is necessarily bad.

What is bad for Bitcoin is when people attempt to manipulate the market, scam, etc.

People profiting from Bitcoin by offering goods and services is what we need.  People spending those bitcoins is even better.
17  Other / Beginners & Help / Re: BetBtcNow.com NOW OPEN on: April 15, 2013, 04:11:48 PM
Interesting, I might post a bet on the Pens the next time they play.

Good luck to you and your new site!
18  Other / Beginners & Help / Re: Well priced bitcoins - legit? on: April 15, 2013, 04:08:30 PM
bulk-bitcoins, is this your own site, or did you register with this username solely to ask this question?  Smiley

I registered just to ask about it  Smiley

Haha OK, fair enough.  It looks kind of sketchy to me, but ideally you could try it out by buying a very small amount and seeing if they deliver.  Considering that the smallest denomination is 10BTC, it seems like kind of a gamble.
19  Other / Beginners & Help / Re: trust on: April 15, 2013, 04:03:21 PM
Check this out:  https://en.bitcoin.it/wiki/Contracts

Basically you can have a third-party or arbiter decide if the exchange was completed.
20  Other / Beginners & Help / Re: Well priced bitcoins - legit? on: April 15, 2013, 03:58:30 PM
bulk-bitcoins, is this your own site, or did you register with this username solely to ask this question?  Smiley
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