CDSS                    CDSS: Course dependent skill structures
cdss_binary_matrix_product
                        Compute a binary matrix product
cdss_circular_requirements
                        Vector of learning objects requiring and
                        teaching the same skill
cdss_close_ar           Close an attribution relation to get a surmise
                        relation.
cdss_csma2sf            Derive a surmise function from a complete skill
                        multi-assignment
cdss_lo_csma2sf         Derive a surmise function between learning
                        objects from a complete skill multi-assignment
cdss_lo_sa2af           Determine Attribution function for LOs from a
                        skill assignment
cdss_lo_sa2ar           Create an attribution relation on learning
                        objects from a skill assignment.
cdss_missing_los        Vector of skills without teaching learning
                        objects.
cdss_nonteaching_los    Vector of learning objects not teaching any
                        skills.
cdss_read_skill_assignment_csv
                        Read an assignment of taught and required
                        skills for a set of learning objects from
                        CSV-files.
cdss_read_skill_assignment_ods
                        Read an assignment of taught and required
                        skills for a set of learning objects from an
                        ODS-file.
cdss_read_skill_assignment_xlsx
                        Read an assignment of taught and required
                        skills for a set of learning objects from an
                        XLSX-file.
cdss_reduce_sf          Reduce a surmise function with respect to item
                        equivalence
cdss_sa2ar_skill        Create an attribution relation on skills from a
                        skill assignment.
cdss_sa2sma             Convert skill assignment matrices to skill
                        multi-assignment
cdss_sa_compliance      Check whether a skill assignment is compliant
                        to the CDCS conditions.
cdss_sa_describes_sr    Check whether a surmise relation can be derived
                        from a given skill assignment.
cdss_sma2csma           Complete a skill multi-assignment
cdss_tables2sa          Build matrices of taught and required,
                        respectively, skills for learning objects from
                        respective tables.
cdss_wf_read_skill_assignment
                        Read an assignment of taught and required
                        skills for a set of learning objects from file
                        and do the whole workflow up to a surmise
                        function on skills
