scholarly journals Hierarchies of Weighted Closed Partially-Ordered Patterns for Enhancing Sequential Data Analysis

Author(s):  
Cristina Nica ◽  
Agnès Braud ◽  
Florence Le Ber
2020 ◽  
Vol 13 (5) ◽  
pp. 1020-1030
Author(s):  
Pradeep S. ◽  
Jagadish S. Kallimani

Background: With the advent of data analysis and machine learning, there is a growing impetus of analyzing and generating models on historic data. The data comes in numerous forms and shapes with an abundance of challenges. The most sorted form of data for analysis is the numerical data. With the plethora of algorithms and tools it is quite manageable to deal with such data. Another form of data is of categorical nature, which is subdivided into, ordinal (order wise) and nominal (number wise). This data can be broadly classified as Sequential and Non-Sequential. Sequential data analysis is easier to preprocess using algorithms. Objective: The challenge of applying machine learning algorithms on categorical data of nonsequential nature is dealt in this paper. Methods: Upon implementing several data analysis algorithms on such data, we end up getting a biased result, which makes it impossible to generate a reliable predictive model. In this paper, we will address this problem by walking through a handful of techniques which during our research helped us in dealing with a large categorical data of non-sequential nature. In subsequent sections, we will discuss the possible implementable solutions and shortfalls of these techniques. Results: The methods are applied to sample datasets available in public domain and the results with respect to accuracy of classification are satisfactory. Conclusion: The best pre-processing technique we observed in our research is one hot encoding, which facilitates breaking down the categorical features into binary and feeding it into an Algorithm to predict the outcome. The example that we took is not abstract but it is a real – time production services dataset, which had many complex variations of categorical features. Our Future work includes creating a robust model on such data and deploying it into industry standard applications.


Author(s):  
Dejiao Niu ◽  
Yawen Liu ◽  
Tao Cai ◽  
Xia Zheng ◽  
Tianquan Liu ◽  
...  

Author(s):  
Lori Rhodenizer ◽  
Florian Jentsch ◽  
Clint A. Bowers

1994 ◽  
Vol 9 (3) ◽  
pp. 251-317 ◽  
Author(s):  
Penelope Sanderson ◽  
Carolanne Fisher

Author(s):  
Penelope M. Sanderson

This paper outlines the need for better conceptual and methodological tools for performing observational data analysis in support of cognitive engineering research and practice and presents a tool, MacSHAPA, that has been designed to support such work. MacSHAPA is particularly suited for cognitive engineering studies of complex real-world decisionmaking. MacSHAPA lets users (1) enter or import data into a spreadsheet-like viewing medium, (2) annotate, manipulate, and visualize data in various ways, (3) carry out statistical analyses of various kinds, and (4) export data and results to other applications. MacSHAPA controls video devices, capturing timecode and inserting it into the database, and using timestamps in the database to locate events of interest on videotape. MacSHAPA's statistical routines include content and duration analysis, transition analysis (with some Markov statistics), lag sequential analysis, cycles reports, and some kinds of sequential pattern matching. The paper concludes with several examples of how MacSHAPA has been used to obtain useful results from observational data collected in laboratory and field settings.


Author(s):  
Clint A. Bowers ◽  
Florian Jentsch ◽  
Eduardo Salas

In their critique of our research, Sanderson and Benda (1998, this issue) suggest several concerns with our characterization and utilization of the Exploratory Sequential Data Analysis (ESDA) approach. In this response, we consider each of the concerns in the context of training needs analysis. We conclude that the ESDA framework appears to hold promise as a training needs analysis tool. However, further dialogue between the experts in the ESDA approach and those in training is required to realize this potential.


2020 ◽  
Vol 39 (24) ◽  
pp. 3313-3328
Author(s):  
Edward H. Ip ◽  
Shyh‐Huei Chen ◽  
Karen Bandeen‐Roche ◽  
Jaime L. Speiser ◽  
Li Cai ◽  
...  

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