Search Results for author: Mario Graff

Found 16 papers, 6 papers with code

Analysis of Systems' Performance in Natural Language Processing Competitions

no code implementations7 Mar 2024 Sergio Nava-Muñoz, Mario Graff, Hugo Jair Escalante

Collaborative competitions have gained popularity in the scientific and technological fields.

Regionalized models for Spanish language variations based on Twitter

no code implementations12 Oct 2021 Eric S. Tellez, Daniela Moctezuma, Sabino Miranda, Mario Graff, Guillermo Ruiz

Spanish is one of the most spoken languages in the globe, but not necessarily Spanish is written and spoken in the same way in different countries.

Word Embeddings

Selection Heuristics on Semantic Genetic Programming for Classification Problems

1 code implementation16 Jul 2019 Claudia N. Sánchez, Mario Graff

The result indicated that the combination of parent selection based on agreement and random selection to replace an individual in the population produces statistically better results than the classical selection and state-of-the-art schemes, and it is competitive with state-of-the-art classifiers.

Classification General Classification

Improving classification performance by feature space transformations and model selection

no code implementations14 Jul 2019 Jose Ortiz-Bejar, Eric S. Tellez, Mario Graff

Improving the performance of classifiers is the realm of feature mapping, prototype selection, and kernel function transformations; these techniques aim for reducing the complexity, and also, improving the accuracy of models.

Classification General Classification +2

EvoMSA: A Multilingual Evolutionary Approach for Sentiment Analysis

1 code implementation29 Nov 2018 Mario Graff, Sabino Miranda-Jiménez, Eric S. Tellez, Daniela Moctezuma

Furthermore, we performed an analysis of EvoMSA's components to measure their contribution to the performance; the idea is to facilitate a practitioner or newcomer to implement a competitive SA classifier.

Sentiment Analysis

INGEOTEC at SemEval-2018 Task 1: EvoMSA and μTC for Sentiment Analysis

no code implementations SEMEVAL 2018 Mario Graff, Mir, Sabino a-Jim{\'e}nez, Eric S. Tellez, Daniela Moctezuma

This paper describes our participation in Affective Tweets task for emotional intensity and sentiment intensity subtasks for English, Spanish, and Arabic languages.

Combinatorial Optimization regression +2

A scalable solution to the nearest neighbor search problem through local-search methods on neighbor graphs

1 code implementation29 May 2017 Eric S. Tellez, Guillermo Ruiz, Edgar Chavez, Mario Graff

Near neighbor search (NNS) is a powerful abstraction for data access; however, data indexing is troublesome even for approximate indexes.

Clustering

An Automated Text Categorization Framework based on Hyperparameter Optimization

1 code implementation6 Apr 2017 Eric S. Tellez, Daniela Moctezuma, Sabino Miranda-Jímenez, Mario Graff

The compared datasets include several problems like topic and polarity classification, spam detection, user profiling and authorship attribution.

Authorship Attribution General Classification +6

Term-Weighting Learning via Genetic Programming for Text Classification

no code implementations2 Oct 2014 Hugo Jair Escalante, Mauricio A. García-Limón, Alicia Morales-Reyes, Mario Graff, Manuel Montes-y-Gómez, Eduardo F. Morales

We propose in this article a genetic program that aims at learning effective TWSs that can improve the performance of current schemes in text classification.

General Classification Image Classification +2

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