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Questions tagged [knime]

KNIME (Konstanz Information Miner) is a user-friendly graphical workbench for the entire data analysis process.

KNIME is an open-source data analysis software, with various plugins from different areas. It has plugins from text mining to image processing, including the chemical structures and high throughput experiments.

KNIME Desktop is available for Windows, Mac and Linux under GPL v3 (or a custom license).

KNIME stands for Konstanz Information Miner and can be run on a centralized server with an integrated web interface or as standalone Rich Client. The client is based on the Eclipse Platform with the plugin and update mechanism. KNIME also offers job scheduling.

271 questions
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Logistic Regression PMML won't Produce Probabilities

As part of a machine-learning deployment project, I built a proof-of-concept where I created two simple logistic regression models for a binary classification task using R's glm function and python's scikit-learn. Afterwards, I converted those…
FatihAkici
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Apply PMML predictor model in python

Knime has generated for me a PMML model. At this time I want to apply this model to a python process. What is the right way to do this? More in depth: I develop a django student attendance system. The application is already so mature that I have…
dani herrera
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Java 1.6.0_26 on Mac OS X Lion

A third party application I'm using (Knime) hangs when using Java for Mac 1.6.0_29 (Java for OS X Lion Update 1). In the user forums of that app, it is recommended to use version 1.6.0_26. Sadly, I got a fresh install, so there are no previous Java…
chahuistle
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PDF report with table of contents containing page number in BIRT

I need to create a TOC on a report that will be produced as PDF. Unfortunately, the TOC mechanism in BIRT when exporting to PDF is to add a bookmark. However, I need to place a report like Section A........................1 Section…
Moka
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R-snippet Error: lazy-load database 'P' is corrupt

I'm getting an error in the "R snippet" and while it is working perfectly in RStudio: Error: lazy-load database 'P' is corrupt In addition: Warning messages: 1: restarting interrupted promise evaluation 2: internal error -3 in R_decompress1 This…
Bernard
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Any Call Center conversation log dataset?

I am analyzing several Sentiment Analysis algorithms to classify and prioritize call center calls. I have been trying to look for this type of data on the web, but found nothing. Ideally I would like to have several two-way conversations, preferably…
user4713129
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Regex with multiple groups, some of which are optional

I have trouble matching multiple groups, some of which are optional. I've tried variations of greedy/non greedy, but can't get it to work. As input, I have cells which look like this: SEPA Overboeking IBAN: AB1234 BIC:…
Cobra
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How to separate XPath results by a delimiter?

I have XML data for many scientific publications and I am trying to parse through the data in KNIME to extract the fields that I need. Here is one example: https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pmc&id=PMC4400176 To extract the…
Zille
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Regex For Multiple Lines in Knime

I am using Knime to find a pattern like AB1234 anywhere in the data of one of my columns X. X can have multiple lines in each cell but I can't figure out how to search all of the lines. Below is my current regex, can you please help me search all…
Rachel Katz
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Predicting a numeric attribute through high dimensional nominal attributes

I'm having difficulties mining a big (100K entries) dataset of mine concerning logistics transportation. I have around 10 nominal String attributes (i.e. city/region/country names, customers/vessel identification codes, etc.). Along with those, I…
hildebro
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Adding NULL value to row in KNIME

Does anyone know if it is possible to add a null value to a row in KNIME? I am trying to use the Rule Engine to remove some values, and substitute them with a NULL. Regards
Sindre
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Execute a Workflow KNIME with a Batch file

I would like to execute a workflow KNIME with a Batch file but i have an error : ERROR KNIME-Worker-2 Call Local Workflow Execute failed : java.lang.NullPointerException My workflow knime work well on Knime but i don't know why I have this…
R.Bun
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How I can extract data from R plot?

As it’s writing on title, I would like to extract a specific data from R plot. On my program, I use the qcc function with control chart R (It’s Quality Control). #Background color qcc.options(bg.margin = "white", bg.figure = "gray95") #R graph…
R.Bun
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Increase RAM available for Knime?

Is there an easy way to increase the RAM available in Knime through a config file or through menu options? I am constantly running into "heap-space" errors during execution and it by default limits the number of categorical variables to 1,000, as…
boethius
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Create sequential IDs for rows

In Knime, how do I Create sequential IDs for rows. I want to use them for assigning primary IDs in a dimension. Also I want to know, how do I only take a limited number of rows, (like top 5 or bottom 10), and get a random sample
schaw shutter
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