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Comment: Classification algorithms as web service (Score 1) 70

by msbmsb (#32283552) Attached to: Google Launches a Data Prediction API
The use of the word "predict" is for ease-of-understanding for the business market and those not familiar with machine learning. Many of the comments here are getting lost in that word. The algorithms behind the API are most likely the same basic ones that have been around for a long time: naive bayes, svm, knn, etc. The actual novelty of this service is that it puts these methods in easy reach for people who otherwise wouldn't know where to start looking, or wouldn't know how to use one of the many available libraries already around, or much less implement something themselves.

See also: http://mlcomp.org/ for a service that allows you to try out different classification algorithms on your own data sets.

Comment: things holding back buzz (Score 1) 178

by msbmsb (#31186946) Attached to: Two Scoops of Buzz
At the moment, there are a number of things holding buzz back from widespread usage:

* buzz has a userbase /ceiling/: the number of gmail users; the userbase may be large but it's closed and entry is a large hurdle for many
* complicating the adoption is the number of those gmail users whose friends also use gmail and would be likely to use buzz, lowering the actual ceiling further
* when people see that not many of their friends are using it, but are/have been using other services, that makes buzz adoption difficult

there are advantages to buzz of course (mobile/geo-loc/post length/etc), but the question remains whether those advantages will eventually outweigh the challenges to more widespread adoption.

Comment: Re:Not entirely helpful (Score 2, Informative) 138

by msbmsb (#28308611) Attached to: Extracting Meaning From Millions of Pages
Semantic processing systems like this (it's not something new) aren't usually able to determine correctness. The truth of a statement is assumed and the best these NLP engines can do at the moment is identify conflicts and maybe use some reputation metrics to assign a veracity rating to a particular statement, or notify the user that there are differing conclusions. These systems are just really, like the summary states, "information extraction" systems. Just as a regular search engine will return you the results from the data set, that's what these types of semantic extraction engines usually do, except the data is processed in a semantically-organized way so that you can query with semantics/natural language constraints instead of just keywords and boolean constraints.

There are some that incorporate some intention or opinion polarity detection, but even those are not capable to sorting "truth" versus "conspiracy".

Additionally, semantic extraction output, like named entities and semantic relations, are useful for many other applications.

Comment: Re:Leap Forward? (Score 1) 213

by msbmsb (#27730573) Attached to: IBM Computer Program To Take On 'Jeopardy!'
I don't think current QA systems would be confused by that question, actually. In the simplest case of just keyword searching for the appropriate passage, the occurence of "author" with a type of town called "hamlet" will be far smaller than "author" with the play name "Hamlet". Not to mention some systems will pre-mark "Hamlet" as some category precluding a town (like "play"). This lack of co-occurrence also assists statistical methods when learning.

The rhyming and puns will be the more difficult tasks to handle.

Comment: Not that immediately novel (Score 1) 213

by msbmsb (#27730405) Attached to: IBM Computer Program To Take On 'Jeopardy!'
Parsing of the questions is the really difficult part of QA. However, the usage of category names isn't something brand new in the field. See the NIST TREC Question Answering competition. The last couple of years' challenges involved a group of questions referencing a "target" and/or the previous question or previous answer to correctly formulate the current answer.

Example:
TARGET: John William King convicted of murder
Q1: How many non-white members of the jury were there?
Q3: Where was the trial held?
Q4: When was King convicted?
Q5: Who was the victim of the murder?

Comment: Re:Somehow I doubt it (Score 1) 422

by msbmsb (#27241501) Attached to: Did Bat Hitch a Ride To Space On Discovery?
Sorry, wrong stage. From stage 1: "To keep the dynamic pressure on the vehicle below a specified level, on the order of 580 pounds per square foot (max q), the main engines are throttled down at approximately 26 seconds and throttled back up at approximately 60 seconds."

http://spaceflight.nasa.gov/shuttle/reference/shutref/events/1stage/

Long computations which yield zero are probably all for naught.

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