4.5. Recommender system of places
This module was designed with the purpose of offering to tourists a guide to guarantee their security within a
quadrant or a zone in the city. In general terms, people moving from a sector of a city to another or within cities or
countries do not know about critical areas in those locations, that is, areas with public order problems for example,
or unhealthy areas which could affect their health or integrity. Normally, tourists tend to visit places with the
mentioned problems, and they are robed or violated, among of others things, because they are not informed about
the security in that zones. To deal with these situations, the proposed system provides the option to label
interesting points. These points are classified according to their known degree of danger for the visitor. Normally,
there are sites where people are robbed, where drugs are sold, unhealthy sites, etc. And this is the classification the
system use. These sites were previously georeferenced and located within a quadrant and labeled, and after all that,
they are classified with a minimum value of 1 and maximum of 5, where the values from 3 to 5 are OK to visit,
while 1 and 2 are not recommended. For this problem, techniques of recommender systems were used with
collaborative filtering and content-based filtering in the context supported