Title: Enhanced word embeddings using multi-semantic representation through lexical chains Open Access Deposited
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(2019). Enhanced word embeddings using multi-semantic representation through lexical chains [Data set]. University of Michigan - Deep Blue. https://doi.org/10.7302/3bp3-wa36
Title: Enhanced word embeddings using multi-semantic representation through lexical chains
Paper under review at ELSEVIER
Authors: Terry Ruas* , Charles Henrique Porto Ferreira* , William Grosky, Fabricio Olivetti de Franca, Debora Maria Rossi de Medeiros 
Affiliation:  University of Michigan - Dearborn, 4901 Evergreen Rd, Dearborn, MI 48128, USA
 Federal University of ABC, Av. dos Estados, 5001 - Bangu, Santo Andre, SP, 09210-580,Brazil
*Corresponding authors: email@example.com (Terry Ruas), firstname.lastname@example.org (Charles Henrique Porto Ferreira)
Content: --mean.arff (train/test when available)
.arff can be read as a text (.txt) file (UTF-8)
comma separated (",")
.arff file contains the vector representaion for each dataset used
Each line represents a document in the dataset references, in which all the words are cleaned (lowercase, common English stopwords removal, remove punctuation) transformed into vector (according to the and averaged.
Do not use .arff in Weka (these files have no header)
: 20Newsgroups - (train/test) http://qwone.com/ jason/20Newsgroups/
BBC - http://mlg.ucd.ie/datasets/bbc.html
Ohsumed - http://disi.unitn.it/moschitti/corpora.htm
Reuters (train/test) - http://disi.unitn.it/moschitti/corpora.htm
ScyClusters and ScyGenes - , 
Last column contains the label for that line-document, representing the class of this document
Google (word2vec) https://code.google.com/archive/p/word2vec/
LDA implemented using gensim https://radimrehurek.com/gensim/models/ldamodel.html using as a training corpus 
MSSA: https://github.com/truas/MSSA and https://github.com/truas/MSSA_Parser using as a training corpus 
FXLC/FLLC: https://github.com/truas/LexicalChain_Builder using as a training corpus 
Content: pre-trained word embeddings models trained with a synset corpus (MSSA, FLLC and FXLC output) in a word2vec implementation
Use: These files can be loaded using the gensim API for word2vec (load)
: MSSA-NR: https://github.com/truas/MSSA and https://github.com/truas/MSSA_Parser
FXLC uses chunk size of 2 and 4
The github repositories have detailed informaton how to generate/apply these techniques.
*.model: binary model exported by the word embeddings techniques.
*.model.vectors.npy: numpy vector that needs to be in the same folder as its *.model
The relationship between words in a sentence often tell us more about the underlying semantic content of a document than its actual words, individually. Recent publications in the natural language processing arena, more specifically using word embeddings, try to incorporate semantic aspects into their word vector representation by considering the context of words and how they are distributed in a document collection. In this work, we propose two novel algorithms, called Flexible Lexical Chain II and Fixed Lexical Chain II that combine the semantic relations derived from lexical chains, prior knowledge from lexical databases, and the robustness of the distributional hypothesis in word embeddings into a single decoupled system. In short, our approach has three main contributions: (i) unsupervised techniques that fully integrate word embeddings and lexical chains; (ii) a more solid semantic representation that considers the latent relation between words in a document; and (iii) lightweight word embeddings models that can be extended to any natural language task. Knowledge-based systems that use natural language text can benefit from our approach to mitigate ambiguous semantic representations provided by traditional statistical approaches. The proposed techniques are tested against seven word embeddings algorithms using five different machine learning classifiers over six scenarios in the document classification task. Our results show that the integration between lexical chains and word embeddings representations sustain state-of-the-art results, even against more complex systems.
Keywords: Lexical chains, natural language processing, word embeddings,
document classification, synsets
Each line in the .arff represents a document in the dataset, in which all the words are cleaned (lowercase, common English stopwords removal, remove punctuation) transformed into vector (according to the and averaged. The final result is a vector-average that represents the entire document. More information on the techniques () used can be found in the DETAILS section.
The MSSA, FLLC, and FXLC synset models are produced considering the English Wikipedia Dump from 2010.
The pre-trained word embeddings models are referenced in (above)
model - word embeddings model applied
mean - vectors for a given are averaged instead of summed
synset - set of synonyms
csv - comma separated values
document-vectors: The datasets benchmarks (documents) were converted into vectors using the referenced word embeddings models from this work. The proposed synset embeddings are located under synset-models folder
Word embeddings used to parse documents -> document-vectors: word2vec (google news), LDA, Glove, fastText, USE, ELMo - Details and descriptions are in the original paper linked to this dataset.
300 dimensions: word2vec (google news), LDA, Glove, fastText, MSSA, FLLC and FXLC vectors
512 dimensions: USE
1024 dimesions: ELMo
Each line represents a document
Last column represent the label of these documents, for each
synset-models: synset corpus trained into a word2vec implementation (300 dimensions, CBOW training model, window size 15, minimum count 10, hierarchical softmax). Parameters not referenced use their default values (https://radimrehurek.com/gensim/models/word2vec.html )
Techniques used*: FLLC + MSSA-0R, FLLC + MSSA-1R, FLLC + MSSA-2R
FXLC2 + MSSA-0R, FXLC2 + MSSA-1R, FXLC2 + MSSA-2R
FXLC4 + MSSA-0R, FXLC4 + MSSA-1R, FXLC4 + MSSA-2R
FXLC8 + MSSA-0R, FXLC8 + MSSA-1R, FXLC8 + MSSA-2R - the models for these last group are not provided (poor results)
*The MSSA techniques used are based on the paper of title: Multi-Sense embeddings through a word sense disambiguation process from Ruas, Terry; Grosky, William; Aizawa, Akiko. https://github.com/truas/MSSA
 D. M. R. Medeiros, A. C. P. L. F. Carvalho, Gene clusters analysis using text mining, in: WOB - Third Workshop on Bioinformatics, SBC, Brasilia - DF, 2004, pp. 141â144.
 D. M. R. Medeiros, A. C. P. L. F. Carvalho, Applying text mining and machine learning techniques to gene clusters analysis, in: ICCIMA â05: 1220 Proceedings of the Sixth International Conference on Computational Intelligence and Multimedia Applications (ICCIMAâ05), IEEE Computer Society, Washington, DC, USA, 2005, pp. 23â28.
 C. Shaoul, C. Westbury, The westbury lab wikipedia corpus, 2010. URL: http://www.psych.ualberta.ca/~westburylab/downloads/westburylab.wikicorp.download.html.