spaCy pipeline object for negating concepts in text

SFU Opinion and Comments Corpus

Relational Operators for Intervals

negate_sentence(A Python module that doesn't negate sentences.)

Create a javascript regular expression for matching everything except for the given string.

code for our paper "Understanding by Understanding Not: Modeling Negation in Language Models"

High-performance tool for negation and uncertainty detection in radiology reports

We introduce a large semi-automatically generated dataset of ~400,000 descriptive sentences about commonsense knowledge that can be true or false in which negation is present in about 2/3 of the corpus in different forms that we use to evaluate LLMs

[ICCV 2025] Know "No" Better: A Data-Driven Approach for Enhancing Negation Awareness in CLIP

Implementation of an Image Processing Library for time consuming operations such as Image Blurring,Negation,Edge Detection and Contrast Stretching.

CANNOT: Compilation of ANnotated, Negation-Oriented Text-pairs

Returns an object with a `negated` boolean and the `!` stripped from negation patterns. Also respects extglobs.

Supplementary data for the LREC 2018 paper "Introducing a Lexicon of Verbal Polarity Shifters for English" by Schulder, Wiegand, Ruppenhofer and Köser.

Supplementary data for the COLING 2018 paper "Automatically Creating a Lexicon of Verbal Polarity Shifters: Mono- and Cross-lingual Methods for German" by Schulder, Wiegand and Ruppenhofer.

Code for the paper "This is not correct! Negation-aware Evaluation of Language Generation Systems"

Developmental Negation Processing in Transformer Language Models, ACL 2022

Negate a complex number.

NeIn: Telling What You Don’t Want 💖 (CVPRW 2025 SyntaGen)

A Certifier algorithm to check a particular solution to the NP-Complete 3-Sat problem

A unique sentiment analysis model on IMDB reviews with custom negation handling. Instead of generic preprocessing, it smartly tags words after negators like "not" (e.g., "not good" → "not_good"), preserving sentiment context. Comparison of models with and without this logic shows improved accuracy and real-world reliability.

This repository contains the dataset created for the LREC 2018 paper "Disambiguation of Verbal Shifters" by Michael Wiegand, Sylvette Loda and Josef Ruppenhofer

Detecting Negation and Uncertainty using various methods

Software project

Supplementary data for the IJCNLP 2017 paper "Towards Bootstrapping a Polarity Shifter Lexicon using Linguistic Features" by Schulder, Wiegand, Ruppenhofer and Roth.

TPTP problems and TSTP solutions of problems in classical propositional logic.

Lua Universal Negation Operator

Negate a single-precision complex floating-point number.

Logic package for Fōrmulæ, in JavaScript

An alternative to the sneaky ! negation operator for Javascript

Supplementary data for the 2021 JNLE article "Automatic Generation of Lexica for Sentiment Polarity Shifters" by Schulder, Wiegand and Ruppenhofer.