classification results of new instances

User43239User43239 Member Posts: 3 Contributor I

I am a novice in using the RapidMiner. My question is "How can I see the classification results of new instances after creating a classifier using a traning dataset?". Many thanks in advance.

Answers

  • rfuentealbarfuentealba Moderator, RapidMiner Certified Analyst, Member, University Professor Posts: 340   Unicorn
    Hello,

    Let's go step by step:

    - Retrieve your training data. Let's say Titanic Training from the samples dataset on the Repository pane.
    - Drag the algorithm you want to train. Let's say Random Forest from the Modeling > Predictive > Trees folder in the Operators pane.
    - Connect the out port of your Titanic Training data to the tra port on the Random Forest operator.
    - Drag the Apply Model algorithm from the Scoring folder in the operators pane.
    - Connect the mod port on the Random Forest operator to the mod port of the Apply Model operator you just dragged.
    - Retrieve your unlabeled data. Let's say Titanic Unlabeled from the samples dataset on the Repository pane.
    - Connect the out port from the Titanic Unlabeled data to the unl port in the Apply Model operator.
    - Connect both ports from the Apply Model operator to the res ports in the end of your canvas.

    If you do this, you may be able to see this:



    If you press play, the Apply Model will just send results to the Results tab. What you will see is a model (or a representation of it), and the results of your new instances after creating a classifier using a training dataset. Just like this:



    The prediction is your target. Tweak a few times and come back to execute. This is your window.

    BTW, RapidMiner Academy has all this knowledge available. You may want to check it out.

    All the best,

    Rodrigo.
    varunm1mschmitzlionelderkrikorsgenzer
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