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Questions tagged [rapidminer]

RapidMiner is a software platform that provides an integrated environment for machine learning, data mining, text mining, predictive analytics and business analytics.

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Categorizing Date in a registry data base of cancer

I happen to work with a breast cancer database which is not available online. I want to follow these steps and report the results: Remove data of people who are young( less than 18 yo) and who are ...
Sadegh's user avatar
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1 vote
2 answers
544 views

How Rapidminer handle same distance for KNN Algorithm

Actually I already asked in rapidminer forum, but no one has given an answer yet.. https://community.rapidminer.com/discussion/55963/how-k-nn-algorithms-work-with-same-distance-in-rapidminer#latest ...
AdeMuchlis's user avatar
2 votes
1 answer
10k views

Information Gain vs Gain Ratio

In the building of a decision tree, when it's better to prefer the information gain criterion to the gain ratio criterion ? And why ?
Qwerto's user avatar
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1 vote
0 answers
394 views

How to improve the accuracy of my prediction models?

First, I am an absolute beginner in this field of science. For my research task, I need to use mobile sensor data to determine a user's keypresses (similar to this: Keystrokes Inference Attack on ...
keinabel's user avatar
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3 votes
2 answers
334 views

How can I detect when a key was pressed with accelerometer or gyroscope data?

I have a dataset (~20k samples) of sensor data gathered from a smartphone. What I want to do with it is to detect those spikes you can see in the graphs below. They occur when the user presses a ...
keinabel's user avatar
  • 209
4 votes
1 answer
845 views

Prediction of soccer matches / process setup and optimization [closed]

Currently I'm working on my master thesis about the application of data mining in football, I'm trying to predict matches based on some stats of the two involved Teams (using RapidMiner). My use case ...
Andreas Brauchle's user avatar
1 vote
0 answers
79 views

Novice question - Interpreting Linear Regression Analysis

I'm looking for a very simple explanation for a project I'm working on. I'm comparing unemployment data and median income based on level of education (Bachelors, Masters, College, Trade Certificate, ...
amace's user avatar
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1 vote
2 answers
744 views

How to use MaxEnt (logistic regression) weights?

I asked this question last night and Matt Krause explanation helped me a lot. (For more explanation please see my previous question). Now I have another problem. We are using RapidMiner studio and ...
Oli's user avatar
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2 votes
1 answer
6k views

Low recall and high precision in text summarization

We are trying to generate a model to summarize Persian news. About 14000 news were summarized with help of humans(supervised) and then we extracted all sentences (about 180000) and labeled them (...
Oli's user avatar
  • 155
-1 votes
1 answer
827 views

ROC / AUC for polynomial Labels

How can I calculate the Area Under Curve for a classifier of a polynomial label in Rapidminer? I could only find a performance operator for binomial labels that provides the AUC value.
Max's user avatar
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2 votes
1 answer
666 views

Tool form Hierarchical clustering

I'm trying to perform a hierarchical Clustering Analysis in a dataset of 40 attributes and +70,000 records, which is mostly composed by categorical variables. I've used Matlab and RapidMiner to ...
formacero10's user avatar
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1 answer
145 views

Combining instance-based learning with regression analysis to improve predictions

I have a table that contains items. Each day its possible that an incident can occur to some items but equally no incident may happen. I wish to see if its possible to create a prediction for the next ...
John Smith's user avatar
1 vote
1 answer
1k views

How to re-cluster new instance in centroid base clustering?

I have applied clustering algorithms like k-mean, k-medoid and DBSCAN on my patients dataset. For each algorithm RapidMiner generated a clustered model (centroid table and graphs etc) and a clustered ...
user1015347's user avatar
3 votes
1 answer
1k views

Visualizing large file-based or Redis-in-memory stored large datasets (millions of data points)

I am very active at StackExchange's QuantFinance forum but thought this question is more suitable to be asked here. I am generating large time series data and store them in-memory in Redis (...
1 vote
1 answer
1k views

Loop over Tokens in RapidMiner's Text Processing Plugin [closed]

is there any possibility to iterate over the tokens of a text document within RapidMiner? My first try was to window the document after tokenisation. But this seems very complicated. I'm doing this ...
Andreas's user avatar
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0 votes
1 answer
762 views

Density Clustering

I am looking for a clustering algorithm. My idealized dataset looks like this: The clustering result should look like the Rapidminer density plot: Means 3 or 4 clusters should be the clustering ...
Tom's user avatar
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1 vote
0 answers
283 views

Problem with unequal distribution of classes in sentiment classification

I am performing a binary sentiment classification (positive/negative) with RapidMiner. My problem is that I have about 400 positive and 1350 negative documents. I get pretty good accuracy but ...
user18075's user avatar
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2 votes
0 answers
637 views

Generating (forcing) confidence percentages in RapidMiner

I have a dependent variable (my 'label' in RapidMiner terms), that is a binary classification expressed as 'WIN' or 'NOTWIN'. I know 'NOTWIN' is exhibited in about 90% of all observations. When I ...
Brett's user avatar
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2 votes
2 answers
927 views

Different prediction score for two SVM-based classifiers

As a validation study, I use two libsvm-based svm classifier against the same data set. One classifier is libsvm implementation in Rapidminer. Another classifier is Libsvm itself. Both of them assume ...
user785099's user avatar
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7 votes
1 answer
396 views

How can I find out if a subset of Stack Exchange users increase/decrease their post rate based on badges earned?

I'm trying to mine that Stack Exchange data dump to find out whether there is a cluster of users that may be positively or negatively affected by the number of badges they've been awarded. The theory ...
cflewis's user avatar
  • 73
1 vote
1 answer
3k views

How to interpret result for MultiModelByRegression in RapidMiner?

I couldn't find any information in the documentation of rapidminer. I have a data set with the following attributes: a,b,c,d,e. The types are: ...
funkywon's user avatar
1 vote
1 answer
4k views

Text classification with RapidMiner

I have a folder for each class that contains some text files related to that class and need to implement a classifier for these files in RapidMiner with KNN algorithm. Is there any sample?
ARZ's user avatar
  • 111
5 votes
1 answer
10k views

Sliding window validation for time series

I have a broad question about sliding window validation. Specifically, I am looking at using Rapid Miner to predict future values of a financial series using "lagged" values of that series and other ...
B_Miner's user avatar
  • 8,780
4 votes
1 answer
5k views

How to choose a data subset in RapidMiner?

I'm working with a CSV which contains approximately 220,000 entries. My aim is to predict one of the attributes (ATT1) using the other 3 (ATT2, ATT3, ATT4). I've been able to do this using NaiveBayes,...
Gurzo's user avatar
  • 143