Abstract: Various methods and systems for providing query result titles using a problem-solution search engine in a search system are provided. A query is received; the query is identified as a free-text query. Problem description features are identified from the free-text query. The problem description features characterize an issue described in the free-text query. Solution description features associated with product titles are accessed, where solution description features characterize a resolved issue described in a product review. A product associated with the product review is the product that resolved the resolved issue in the product review. The problem description features are compared to the solution description features. A product title is identified as a query result title. The product title is selected based on solution description features of the product title corresponding to the problem description features of the free-text query. The query result title is communicated.

Abstract: Aspects of the present disclosure relate to a network-based, user behavior based guidance system that includes a client device in communication with an application server executing the system over a network. For example, the user behavior based guidance system may be or include a group of one or more server machines. The user behavior based guidance system is configured to collect user behavior data of users interacting within a network during browsing sessions. For example, the user behavior collected by the system in a browsing session of the user includes clicks, back clicks, dwell time, device type, search requests, as well as exit rate. Each browsing session may be treated as a sequence of states, wherein each user behavior event is treated as a state in the sequence.