This node uses the dictionary build with the corresponding learner node and predicts the categories for uncategorized documents by looking up the relevance scores in the dictionary and assigning the categories with the highest probability.
This classifier won the first Research Garden competition where the goal was to classify product descriptions into eight different categories. See press release (on archive.org).
The complementary Naïve Bayes scoring has been described in “Tackling the Poor Assumptions of Naive Bayes Text Classifiers”; Jason D. M. Rennie; Lawrence Shih; Jaime Teevan; David R. Karger; 2003. This way, not the term counts in the regarded class, but the counts from all other classes are regarded for each class prediction. This leads to better classification accuracy.
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- CSV Reader10 %
Excel Reader (XLS)5 %- Table View (JavaScript)4 %
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CSV Reader3 %Model Reader3 %- Text Classifier Model Pruner3 %
File Reader2 %- Partitioning2 %
Column Rename2 %XLS Reader2 %- Text Classifier Model to Table2 %
- N-Gram Extractor2 %
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Row Filter (deprecated)2 %- String Manipulation2 %
Excel Reader (XLS)2 %- Punctuation Erasure2 %
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- Excel Reader2 %
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Joiner1 %- Rule-based Row Splitter1 %
- Tika Parser1 %
- Number to String1 %
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Cell Splitter< 1 %- Rule-based Row Filter< 1 %
- Java Snippet (simple)< 1 %
- Category to Class< 1 %
Document Data Extractor< 1 %- JSON to Table< 1 %
- Twitter Search (legacy)< 1 %
Database Reader< 1 %Row Splitter (deprecated)< 1 %- Bag Of Words Creator< 1 %
- Container Input (JSON)< 1 %
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- Column Expressions (legacy)< 1 %
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Strings To Document< 1 %- Strings to Document< 1 %
- Fix Column Names< 1 %
Table Column to Variable< 1 %Loop End< 1 %- Binner (Dictionary)< 1 %
Cell Replacer< 1 %- Missing Value< 1 %
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Excel Reader (XLS)< 1 %- Replacer< 1 %
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- Text Classifier Predictor< 1 %
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String Replace (Dictionary)< 1 %
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Links
- How to increase my acc scoreby qqilihq on 2022-04-18forum.knime.com/p/154154
- Text classification starting from excelby qqilihq on 2020-05-06forum.knime.com/p/90251
- Find the count of predicted categories.by armingrudd on 2019-08-26forum.knime.com/p/68711
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