"Where can I find a tutorial on using RapidMiner for sentiment analysis?"

Legacy UserLegacy User Member Posts: 0 Newbie
edited May 23 in Help
Folks,

My interest is in doing sentiment analysis by keyword on web-based data.  My primary inputs are RSS-feeds.  No web crawling is needed as I have an continuous feed on topics that are of most interest.  From my review of the documentation and the examples, it unfortunately isn't clear how I can make this happen.

So, where can I find a tutorial or a how-to guide that will alllow me to build a sentiment analysis model?  

Answers

  • landland RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,523   Unicorn
    Hi,
    do you have already downloaded the text plugin? You will need it in order to analyse texts. It provides several samples how to do this.

    Greetings,
      Sebastian
  • Legacy UserLegacy User Member Posts: 0 Newbie
    Yes, the text plugin AND examples are installed.  Unfortunately, the examples are not as intuitive as I would like.
    I am looking for a HOW_TO guide that provides a clearer overview of the steps needed to complete a sentiment analysis.  

    My experience is that this kind of reference material is common in the open source world.
  • landland RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,523   Unicorn
    Hi,
    beside the tutorials on http://sourceforge.net/project/showfiles.php?group_id=114160&;package_id=128128 and http://nemoz.org/joomla/content/blogcategory/21/53 there are no tutorials available as far as I know. Unfortunately one might assume, that the topic is far to complicated to summarize it in one single howto.
    Currently we are planning to publish some guides and tutorials in the near future, but daily work consumes most of the available time.

    Greetings,
      Sebastian
  • Legacy UserLegacy User Member Posts: 0 Newbie
    Hi Sebastian!

    Thanks for the links but would it be possible to give me a list of the operators to use plsss?  :-*

    I'm trying to:
    1) feed ready articles to the RM
    2) extract sentiments of related topics
    3) visualise the sentiments of the topics

    Thanks sooo much!
    ???
  • TobiasMalbrechtTobiasMalbrecht Moderator, Employee, Member Posts: 289  Maven
    Hi,

    sorry, but I think we can not really help you here since the question is far to unspecific. To give you a short answer: for the text preprocessing you will need to use the operators from the text plugin - probably many of them. For the extraction of sentiments you will need some analysis approach. Either you have to label the data and apply some supervised learning method. Otherwise clustering might be a good starting point. Hence, it depends crucially on your data and your analysis goal, which operators you will actually need.

    Agian: have a look into the examples in the text plugin for text (sentiment) specific applications and the RapidMiner tutorial to gain insight in the data mining steps.

    Kind regards,
    Tobias
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