Diversity Enhanced Table-to-Text Generation via Type Control
Yotam Perlitz, Liat Ein-Dor, Dafna Sheinwald, Noam Slonim, Michal, Shmueli-Scheuer

TL;DR
This paper introduces a type-controlled approach to generate diverse, logical natural language statements from tabular data, improving the control, quality, and diversity of outputs in logical NLG tasks.
Contribution
It presents a simple, effective method leveraging logic-type control to enhance diversity and quality in table-to-text generation for logical NLG.
Findings
Outperforms strong baselines in quality and diversity
Enables effective control over statement types
Validated through extensive automatic and human evaluations
Abstract
Generating natural language statements to convey logical inferences from tabular data (i.e., Logical NLG) is a process with one input and a variety of valid outputs. This characteristic underscores the need for a method to produce a diverse set of valid outputs, presenting different perspectives of the input data. We propose a simple yet effective diversity-enhancing scheme that builds upon an inherent property of the statements, their logic-types, by using a type-controlled table-to-text generation model. We demonstrate, through extensive automatic and human evaluations over the two publicly available Logical NLG datasets, that our proposed method both facilitates the ability to effectively control the generated statement type, and produces results superior to the strongest baselines in terms of quality and factuality-diversity trade-off.
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Taxonomy
TopicsNatural Language Processing Techniques · Topic Modeling · Text Readability and Simplification
