Temporal Web Alerts

Web alerts are user-defined monitor conditions for public web information in which notification messages are sent to users whenever their alert conditions are met. Web alerts are usually available as services over the web. Through these services, users can define to monitor some interesting information for them. This paper discusses a special type of web alerts called temporal web alerts. In this alert type, the user can define temporal monitoring conditions for some web information that their values change with time. Examples of this type of information are the stock prices, currency exchange rates, and temperatures all of which vary as time passes. This paper discusses the possible approaches to satisfy temporal conditions and the storage requirements to support this type of alerts and provides a solution to minimize storage requirements.