Before revision:  Our user feedback suggests that Sigma Worksheet provides an easier to use and learn interface for data warehouses, improving the  data analysis and exploration experience for both expert and non-expert enterprise users  .
After revision:  Our user feedback suggests that Sigma Worksheet provides an easier to use and learn interface for data warehouses, improving the data analysis and exploration experience for both expert and non-expert enterprise users . Our findings also suggest Sigma Worksheet can further improve user experience by providing guidance to users at various steps of data analysis .