Fast Non-Uniform Quantisation via FP12 Demotion and Constant-Time Predecessor Tables

Fast Non-Uniform Quantisation via FP12 Demotion and Constant-Time Predecessor Tables | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Electronics Letters This is a preprint and has not been peer reviewed. Data may be preliminary. 13 February 2026 V1 Latest version Share on Fast Non-Uniform Quantisation via FP12 Demotion and Constant-Time Predecessor Tables Author : Oswaldo Cadenas 0000-0003-4152-6458 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.177098242.22661662/v1 Published Electronics Letters Version of record Peer review timeline 145 views 85 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract We present a practical O(1)-per-query method for non-uniform scalar quantisation when decision boundaries are static and reused across large query volumes. Real-valued boundaries are demoted to an FP12 finite universe (U=2 12 ) and indexed using a compact van Emde Boas–style predecessor structure, yielding predecessor retrieval via a constant number of table lookups independent of the number of bins. We show that the coarse lookup is corrected by a bounded local check against neighbouring original boundaries, recovering the exact bin. Experiments show up to a 5× speedup versus binary search for high-volume lookup workloads. Supplementary Material File (myqo1.pdf) Download 187.75 KB Information & Authors Information Version history V1 Version 1 13 February 2026 Peer review timeline Published Electronics Letters Version of Record 18 Apr 2026 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Collection Electronics Letters Keywords floating point arithmetic quantisation (signal) table lookup Authors Affiliations Oswaldo Cadenas 0000-0003-4152-6458 [email protected] London South Bank University View all articles by this author Metrics & Citations Metrics Article Usage 145 views 85 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Oswaldo Cadenas. Fast Non-Uniform Quantisation via FP12 Demotion and Constant-Time Predecessor Tables. Authorea . 13 February 2026. DOI: https://doi.org/10.22541/au.177098242.22661662/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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