Publication Date

Spring 2018

Degree Type


Degree Name

Master of Science (MS)


Computer Engineering


Jerry Gao


Big Data, Big Data Quality

Subject Areas

Computer engineering


The chief purpose of this study is to characterize various big data quality models and to validate each with an example. As the volume of data is increasing at an exponential speed in the era of the broadband Internet, the success of a product or decision largely depends upon selecting the highest quality raw materials, or data, to be used in production. However, working with data in high volumes, fast velocities, and various formats can be fraught with problems. Therefore, software industries need a quality check, especially for data being generated by either software or a sensor. This study explores various big data quality parameters and their definitions and proposes a quality model for each parameter. By using data from the Water Quality U. S. Geological Survey (USGS), San Francisco Bay, an example for each of the proposed big data quality models is given. To calculate composite data quality, prevalent methods such as Monte Carlo and neural networks were used. This thesis proposes eight big data quality parameters in total. Six out of eight of those models were coded and made into a final year project by a group of Master’s degree students at SJSU. A case study is carried out using linear regression analysis, and all the big data quality parameters are validated with positive results.