1. A method for integrating semantic search, query, and analysis across data sets associated with a plurality of monitored physical assets, the method comprising: presenting, via a graphical user interface, an input field for a search engine that accesses, in a single search, a plurality of indexes generated from data sets associated with a plurality of monitored physical assets, wherein the search engine accesses, in the same single search, a model based on a graph database that includes i) one or more properties that describe a given monitored physical asset and ii) one or more model entity types that define a hierarchical relationship among the plurality of monitored physical assets; in response to receiving, in the input field of the graphical user interface, one or more search keywords, searching, by a computing device, across the plurality of indexes and model to determine i) one or more first result sets for each of the plurality of indexes having matched portions to the one or more search keywords and ii) one or more second result sets of the one or more properties and model entity types having matched portions to the one or more search keywords; presenting, via the graphical user interface, i) graphical objects associated with the one or more first result sets including results associated with each matched monitored physical asset of the plurality of monitored physical assets, the one or more second results associated with one or more matched properties, and the one or more second results associated with one or more matched model entity types, and ii) graphical objects associated with one or more filters to refine the searched results.