Obviousness

I cannot perform a comprehensive obviousness analysis under 35 U.S.C. § 103 as requested because the provided "Prior art keywords" (robot, nodes, location, graph, map) are generic terms and not specific prior art references (e.g., patents, publications) with detailed disclosures.

A proper obviousness analysis requires identifying specific prior art documents, detailing their individual teachings, and then explaining why a person having ordinary skill in the art would have been motivated to combine these specific references to arrive at the claimed invention, with a reasonable expectation of success.

Without the actual prior art documents, I cannot construct an argument regarding combinations of references. I can only acknowledge that the concepts of robots, nodes, locations, graphs, and maps are foundational in the field of robotics and navigation, but this does not equate to an obviousness argument based on specific prior art combinations.