Abstract: Systems and methods for semantic search engine analysis are disclosed. Generally, the system receives user provided text and/or speech search input, and further processes the search input to determine a semantic meaning. If the search input is speech, the system may first convert the speech into text. The system lexically processes the search input for ensuring the search input is valid, tags portions of the search input with metadata for applying a meaning of the tagged portions, and generally analyzes the relative locations of individual words and phrases to determine grammatical or linguistic relationships within the search input. In some embodiments, the system may disambiguate words or search terms, as well as provide input suggestions to the user. The system may use the manipulated search input to generate a search query, such as a query for searching apartment listing databases, and further display the search query results to the user.

Abstract: A road marker 20 comprises a body 22. A photodetector 26 mounted on the body is responsive to illumination by headlights of a first vehicle approaching the body. The photodetector is connected in a circuit 32 on the body also comprising a light emitting device 30. The circuit being configured to energize the light emitting device upon illumination of the photodetector by the head lights of a vehicle approaching the body in a first direction A and the light emitting device is mounted on the body to enhance visibility of the body, particularly for a driver of a second vehicle being driven in a direction B other than the first direction.