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LDA_​test

Data sources Identify Parameters Clean parameters LDA on N ... N+ M topics +1 to Topic Param Questions1. How do I include the alpha parameter (0.01 to0.03; step of 0.01) in LDA topic modelling? Do Ineed another loop? 2. Other ways to create parameters?3. Right now, I'm case converting variablesindividually using Math Formula node. Is there anode of workflow to do it all at once? POS tagging, lemmatization, stop word, number, ... filteringRead news docsfrom tableClose off Topic LoopFor every TopicParameters(Topics, alpha)Number of loops (based on min / max topics)Create variables from Parameters TableTurn param names into IndexesExtract topics fromdocumentsConvert Min Topics to IntConvert Max Topics to IntNode 784Add 1 to topicsCreate a table from variablesLabel each iteration with the topic valueReformat from Wide to LongPreprocessing Table Reader Loop End Counting Loop Start Table Creator Math Formula(Variable) Table Columnto Variable RowID Topic Extractor(Parallel LDA) Math Formula(Variable) Math Formula(Variable) Math Formula(Variable) Variable Creator Variable toTable Row ConstantValue Column Unpivoting Data sources Identify Parameters Clean parameters LDA on N ... N+ M topics +1 to Topic Param Questions1. How do I include the alpha parameter (0.01 to0.03; step of 0.01) in LDA topic modelling? Do Ineed another loop? 2. Other ways to create parameters?3. Right now, I'm case converting variablesindividually using Math Formula node. Is there anode of workflow to do it all at once? POS tagging, lemmatization, stop word, number, ... filteringRead news docsfrom tableClose off Topic LoopFor every TopicParameters(Topics, alpha)Number of loops (based on min / max topics)Create variables from Parameters TableTurn param names into IndexesExtract topics fromdocumentsConvert Min Topics to IntConvert Max Topics to IntNode 784Add 1 to topicsCreate a table from variablesLabel each iteration with the topic valueReformat from Wide to LongPreprocessing Table Reader Loop End Counting Loop Start Table Creator Math Formula(Variable) Table Columnto Variable RowID Topic Extractor(Parallel LDA) Math Formula(Variable) Math Formula(Variable) Math Formula(Variable) Variable Creator Variable toTable Row ConstantValue Column Unpivoting

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Created by: edwin.tam
Created at: 2022-11-14
On NodePit since: 2022-11-15
Last update: 2024-11-23
Created with KNIME version: v4.6.3

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