Complex sentence: In contrast to this, localization is the problem of estimating the place (and pose) of the robot relative to a map; in other words, the robot has to answer the second characteristic question, Where am I ?
Split into simpler sentences: In contrast to this, localization is the problem of estimating the place (and pose) of the robot relative to a map. In other words, the robot has to answer the second characteristic question, Where am I?