Numeric Property Searching in STNext – Case Studies from DWPI

The unique Numeric Property Search (NPS) feature offers exact value and range search options for 59 physical and chemical properties, for example ENERGY (/ENE) or PRESSURE (/PRES), indexed from 1,800 original units. Those numeric values and their corresponding units are automatically extracted from database text, normalized and then made available for searching. Especially the normalization step is essential for easily locating references using different unit variants in the text. That means it doesn`t matter which unit is used in the search query, e.g. a search for 20 centimetre will also retrieve records mentioning metre or millimetre in the document text but also units from different unit systems will be found accordingly, such as yard or inch. This E-Seminar will introduces this powerful STN search tool, providing a variety of practical search examples to demonstrate its use.

Presentation