Jim Gan

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Top Stories by Jim Gan

People communicate with each other online. People buy goods and services from online stores. People pay bills, file insurance claims, and book travel and flights online. Each of these online activities generates digital information such as e-mail, invoices, statements, hotel reservation confirmations, purchase orders, news reports, and technical documents. One characteristic of this kind of digital information is that it is semistructured data. E-mail is semistructured; it has structured parts, such as from, to, cc, and subject, and an unstructured part, the e-mail body, which can be any text. Reservation confirmations are semistructured too; they may contain structured information, like room rent and hotel address, and unstructured information, such as the hotel description and cancellation policy. Another characteristic of this kind of digital information is that ... (more)