Lhasa Limited shared knowledge shared progress


This FAQs section details frequently asked questions about Sarah Nexus.
Use the form below to search the Sarah Nexus for FAQs containing specific words or combinations of words.

Search for:
Does the hierarchy seen in Sarah Nexus exist in Derek Nexus?

The hierarchy that Sarah Nexus uses to hold the model allows for varying sized and overlapping fragments to be retained when they provide information of value to the model. The method applied here is unique to Sarah Nexus.

The structural explanation for the prediction provided by Sarah Nexus is conveyed by highlighting those fragment(s) that Sarah Nexus considers meaningful.  Derek Nexus also highlights fragments of the query compound in order to illustrate the matches to patterns (Markush structures) used to hold knowledge within Derek Nexus.

Both models highlight parts of the query compound for the same purpose – to draw the user’s attention to parts of the structure that influenced that prediction. How these are identified is however, very different.  Derek Nexus relies on patterns drawn by experts whereas Sarah Nexus identifies those with statistical significance automatically.

© 2019 Lhasa Limited | Registered office: Granary Wharf House, 2 Canal Wharf, Leeds, LS11 5PS, UK Tel: +44 (0)113 394 6020
VAT number 396 8737 77 | Lhasa Limited is registered as a charity (290866)| Company Registration Number 01765239 (England and Wales).

Thanks to QuestionPro's generosity, we now have survey software that powers our data intelligence.