Examples with Student org.cpsolver.studentsct.model.Student used on opensource projects

Example 1 with Student

use of org.cpsolver.studentsct.model.Student in project cpsolver by UniTime.

the class StudentRequestXml method exportModel.

public static Document exportModel(Assignment<Request, Enrollment> assignment, StudentSectioningModel model) {
    Document document = DocumentHelper.createDocument();
    Element requestElement = document.addElement("request");
    requestElement.addAttribute("campus", model.getProperties().getProperty("Data.Initiative"));
    requestElement.addAttribute("year", model.getProperties().getProperty("Data.Year"));
    requestElement.addAttribute("term", model.getProperties().getProperty("Data.Term"));
    for (Student student : model.getStudents()) {
        Element studentElement = requestElement.addElement("student");
        studentElement.addAttribute("key", String.valueOf(student.getId()));
        Element courseRequestsElement = studentElement.addElement("updateCourseRequests");
        courseRequestsElement.addAttribute("commit", "true");
        Collections.sort(student.getRequests(), new Comparator<Request>() {

            @Override
            public int compare(Request r1, Request r2) {
                if (r1.isAlternative() != r2.isAlternative()) {
                    return (r1.isAlternative() ? 1 : -1);
                }
                return Double.compare(r1.getPriority(), r2.getPriority());
            }
        });
        boolean hasSchedule = false;
        for (Request request : student.getRequests()) {
            if (assignment.getValue(request) != null)
                hasSchedule = true;
            if (request instanceof FreeTimeRequest) {
                FreeTimeRequest ftReq = (FreeTimeRequest) request;
                Element ftReqElement = courseRequestsElement.addElement("freeTime");
                requestElement.addAttribute("days", ftReq.getTime().getDayHeader());
                int startSlot = ftReq.getTime().getStartSlot();
                int startTime = startSlot * Constants.SLOT_LENGTH_MIN + Constants.FIRST_SLOT_TIME_MIN;
                ftReqElement.addAttribute("startTime", s2zDF.format(startTime / 60) + s2zDF.format(startTime % 60));
                int endTime = startTime + ftReq.getTime().getLength() * Constants.SLOT_LENGTH_MIN - ftReq.getTime().getBreakTime();
                ftReqElement.addAttribute("endTime", s2zDF.format(endTime / 60) + s2zDF.format(endTime % 60));
                ftReqElement.addAttribute("length", String.valueOf(ftReq.getTime().getLength() * Constants.SLOT_LENGTH_MIN));
            } else {
                CourseRequest crReq = (CourseRequest) request;
                Element crReqElement = courseRequestsElement.addElement("courseOffering");
                Course course = crReq.getCourses().get(0);
                crReqElement.addAttribute("subjectArea", course.getSubjectArea());
                crReqElement.addAttribute("courseNumber", course.getCourseNumber());
                crReqElement.addAttribute("waitlist", crReq.isWaitlist() ? "true" : "false");
                crReqElement.addAttribute("alternative", crReq.isAlternative() ? "true" : "false");
                for (int i = 1; i < crReq.getCourses().size(); i++) {
                    Course altCourse = crReq.getCourses().get(i);
                    Element altCourseElement = crReqElement.addElement("alternative");
                    altCourseElement.addAttribute("subjectArea", altCourse.getSubjectArea());
                    altCourseElement.addAttribute("courseNumber", altCourse.getCourseNumber());
                }
            }
        }
        if (hasSchedule) {
            Element requestScheduleElement = studentElement.addElement("requestSchedule");
            requestScheduleElement.addAttribute("type", "commit");
            for (Request request : student.getRequests()) {
                if (request instanceof CourseRequest) {
                    CourseRequest crReq = (CourseRequest) request;
                    Enrollment enrollment = assignment.getValue(crReq);
                    if (enrollment == null)
                        continue;
                    Element crReqElement = requestScheduleElement.addElement("courseOffering");
                    Course course = enrollment.getCourse();
                    crReqElement.addAttribute("subjectArea", course.getSubjectArea());
                    crReqElement.addAttribute("courseNumber", course.getCourseNumber());
                    for (Section section : enrollment.getSections()) {
                        Element classEl = crReqElement.addElement("class");
                        classEl.addAttribute("id", section.getSubpart().getInstructionalType());
                        classEl.addAttribute("assignmentId", String.valueOf(section.getId()));
                    }
                }
            }
        }
    }
    return document;
}

Example 2 with Student

use of org.cpsolver.studentsct.model.Student in project cpsolver by UniTime.

the class StudentSectioningXMLLoader method loadStudents.

/**
     * Load students
     * @param studentsEl students element
     * @param offeringTable offering table
     * @param courseTable course table
     */
protected void loadStudents(Element studentsEl, Map<Long, Offering> offeringTable, Map<Long, Course> courseTable) {
    List<Enrollment> bestEnrollments = new ArrayList<Enrollment>();
    List<Enrollment> currentEnrollments = new ArrayList<Enrollment>();
    for (Iterator<?> i = studentsEl.elementIterator("student"); i.hasNext(); ) {
        Element studentEl = (Element) i.next();
        Student student = loadStudent(studentEl, offeringTable);
        if (iStudentFilter != null && !iStudentFilter.accept(student))
            continue;
        for (Iterator<?> j = studentEl.elementIterator(); j.hasNext(); ) {
            Element requestEl = (Element) j.next();
            Request request = loadRequest(requestEl, student, offeringTable, courseTable);
            if (request == null)
                continue;
            Element initialEl = requestEl.element("initial");
            if (iLoadInitial && initialEl != null) {
                Enrollment enrollment = loadEnrollment(initialEl, request);
                if (enrollment != null)
                    request.setInitialAssignment(enrollment);
            }
            Element currentEl = requestEl.element("current");
            if (iLoadCurrent && currentEl != null) {
                Enrollment enrollment = loadEnrollment(currentEl, request);
                if (enrollment != null)
                    currentEnrollments.add(enrollment);
            }
            Element bestEl = requestEl.element("best");
            if (iLoadBest && bestEl != null) {
                Enrollment enrollment = loadEnrollment(bestEl, request);
                if (enrollment != null)
                    bestEnrollments.add(enrollment);
            }
        }
        getModel().addStudent(student);
    }
    if (!bestEnrollments.isEmpty()) {
        // Enrollments with a reservation must go first
        for (Enrollment enrollment : bestEnrollments) {
            if (enrollment.getReservation() == null)
                continue;
            if (!enrollment.getStudent().isAvailable(enrollment)) {
                sLogger.warn("Enrollment " + enrollment + " is conflicting: student not available.");
                continue;
            }
            Map<Constraint<Request, Enrollment>, Set<Enrollment>> conflicts = getModel().conflictConstraints(getAssignment(), enrollment);
            if (conflicts.isEmpty())
                getAssignment().assign(0, enrollment);
            else
                sLogger.warn("Enrollment " + enrollment + " conflicts with " + conflicts);
        }
        for (Enrollment enrollment : bestEnrollments) {
            if (enrollment.getReservation() != null)
                continue;
            if (!enrollment.getStudent().isAvailable(enrollment)) {
                sLogger.warn("Enrollment " + enrollment + " is conflicting: student not available.");
                continue;
            }
            Map<Constraint<Request, Enrollment>, Set<Enrollment>> conflicts = getModel().conflictConstraints(getAssignment(), enrollment);
            if (conflicts.isEmpty())
                getAssignment().assign(0, enrollment);
            else
                sLogger.warn("Enrollment " + enrollment + " conflicts with " + conflicts);
        }
        getModel().saveBest(getAssignment());
    }
    if (!currentEnrollments.isEmpty()) {
        for (Request request : getModel().variables()) getAssignment().unassign(0, request);
        // Enrollments with a reservation must go first
        for (Enrollment enrollment : currentEnrollments) {
            if (enrollment.getReservation() == null)
                continue;
            if (!enrollment.getStudent().isAvailable(enrollment)) {
                sLogger.warn("Enrollment " + enrollment + " is conflicting: student not available.");
                continue;
            }
            Map<Constraint<Request, Enrollment>, Set<Enrollment>> conflicts = getModel().conflictConstraints(getAssignment(), enrollment);
            if (conflicts.isEmpty())
                getAssignment().assign(0, enrollment);
            else
                sLogger.warn("Enrollment " + enrollment + " conflicts with " + conflicts);
        }
        for (Enrollment enrollment : currentEnrollments) {
            if (enrollment.getReservation() != null)
                continue;
            if (!enrollment.getStudent().isAvailable(enrollment)) {
                sLogger.warn("Enrollment " + enrollment + " is conflicting: student not available.");
                continue;
            }
            Map<Constraint<Request, Enrollment>, Set<Enrollment>> conflicts = getModel().conflictConstraints(getAssignment(), enrollment);
            if (conflicts.isEmpty())
                getAssignment().assign(0, enrollment);
            else
                sLogger.warn("Enrollment " + enrollment + " conflicts with " + conflicts);
        }
    }
}

Example 3 with Student

use of org.cpsolver.studentsct.model.Student in project cpsolver by UniTime.

the class StudentSectioningModel method computeOnlineSectioningInfos.

/**
     * Compute online student sectioning infos for all sections (see
     * {@link Section#getSpaceExpected()} and {@link Section#getSpaceHeld()}).
     * @param assignment current assignment
     */
public void computeOnlineSectioningInfos(Assignment<Request, Enrollment> assignment) {
    clearOnlineSectioningInfos();
    for (Student student : getStudents()) {
        if (!student.isDummy())
            continue;
        for (Request request : student.getRequests()) {
            if (!(request instanceof CourseRequest))
                continue;
            CourseRequest courseRequest = (CourseRequest) request;
            Enrollment enrollment = assignment.getValue(courseRequest);
            if (enrollment != null) {
                for (Section section : enrollment.getSections()) {
                    section.setSpaceHeld(courseRequest.getWeight() + section.getSpaceHeld());
                }
            }
            List<Enrollment> feasibleEnrollments = new ArrayList<Enrollment>();
            int totalLimit = 0;
            for (Enrollment enrl : courseRequest.values(assignment)) {
                boolean overlaps = false;
                for (Request otherRequest : student.getRequests()) {
                    if (otherRequest.equals(courseRequest) || !(otherRequest instanceof CourseRequest))
                        continue;
                    Enrollment otherErollment = assignment.getValue(otherRequest);
                    if (otherErollment == null)
                        continue;
                    if (enrl.isOverlapping(otherErollment)) {
                        overlaps = true;
                        break;
                    }
                }
                if (!overlaps) {
                    feasibleEnrollments.add(enrl);
                    if (totalLimit >= 0) {
                        int limit = enrl.getLimit();
                        if (limit < 0)
                            totalLimit = -1;
                        else
                            totalLimit += limit;
                    }
                }
            }
            double increment = courseRequest.getWeight() / (totalLimit > 0 ? totalLimit : feasibleEnrollments.size());
            for (Enrollment feasibleEnrollment : feasibleEnrollments) {
                for (Section section : feasibleEnrollment.getSections()) {
                    if (totalLimit > 0) {
                        section.setSpaceExpected(section.getSpaceExpected() + increment * feasibleEnrollment.getLimit());
                    } else {
                        section.setSpaceExpected(section.getSpaceExpected() + increment);
                    }
                }
            }
        }
    }
}

Example 4 with Student

use of org.cpsolver.studentsct.model.Student in project cpsolver by UniTime.

the class OriginalStudentWeights method main.

/**
     * Test case -- run to see the weights for a few courses
     * @param args program arguments
     */
public static void main(String[] args) {
    OriginalStudentWeights pw = new OriginalStudentWeights(new DataProperties());
    DecimalFormat df = new DecimalFormat("0.000");
    Student s = new Student(0l);
    new CourseRequest(1l, 0, false, s, ToolBox.toList(new Course(1, "A", "1", new Offering(0, "A")), new Course(1, "A", "2", new Offering(0, "A")), new Course(1, "A", "3", new Offering(0, "A"))), false, null);
    new CourseRequest(2l, 1, false, s, ToolBox.toList(new Course(1, "B", "1", new Offering(0, "B")), new Course(1, "B", "2", new Offering(0, "B")), new Course(1, "B", "3", new Offering(0, "B"))), false, null);
    new CourseRequest(3l, 2, false, s, ToolBox.toList(new Course(1, "C", "1", new Offering(0, "C")), new Course(1, "C", "2", new Offering(0, "C")), new Course(1, "C", "3", new Offering(0, "C"))), false, null);
    new CourseRequest(4l, 3, false, s, ToolBox.toList(new Course(1, "D", "1", new Offering(0, "D")), new Course(1, "D", "2", new Offering(0, "D")), new Course(1, "D", "3", new Offering(0, "D"))), false, null);
    new CourseRequest(5l, 4, false, s, ToolBox.toList(new Course(1, "E", "1", new Offering(0, "E")), new Course(1, "E", "2", new Offering(0, "E")), new Course(1, "E", "3", new Offering(0, "E"))), false, null);
    new CourseRequest(6l, 5, true, s, ToolBox.toList(new Course(1, "F", "1", new Offering(0, "F")), new Course(1, "F", "2", new Offering(0, "F")), new Course(1, "F", "3", new Offering(0, "F"))), false, null);
    new CourseRequest(7l, 6, true, s, ToolBox.toList(new Course(1, "G", "1", new Offering(0, "G")), new Course(1, "G", "2", new Offering(0, "G")), new Course(1, "G", "3", new Offering(0, "G"))), false, null);
    Assignment<Request, Enrollment> assignment = new DefaultSingleAssignment<Request, Enrollment>();
    Placement p = new Placement(null, new TimeLocation(1, 90, 12, 0, 0, null, null, new BitSet(), 10), new ArrayList<RoomLocation>());
    for (Request r : s.getRequests()) {
        CourseRequest cr = (CourseRequest) r;
        double[] w = new double[] { 0.0, 0.0, 0.0 };
        for (int i = 0; i < cr.getCourses().size(); i++) {
            Config cfg = new Config(0l, -1, "", cr.getCourses().get(i).getOffering());
            Set<SctAssignment> sections = new HashSet<SctAssignment>();
            sections.add(new Section(0, 1, "x", new Subpart(0, "Lec", "Lec", cfg, null), p, null));
            Enrollment e = new Enrollment(cr, i, cfg, sections, assignment);
            w[i] = pw.getWeight(assignment, e, null, null);
        }
        System.out.println(cr + ": " + df.format(w[0]) + "  " + df.format(w[1]) + "  " + df.format(w[2]));
    }
    System.out.println("With one distance conflict:");
    for (Request r : s.getRequests()) {
        CourseRequest cr = (CourseRequest) r;
        double[] w = new double[] { 0.0, 0.0, 0.0 };
        for (int i = 0; i < cr.getCourses().size(); i++) {
            Config cfg = new Config(0l, -1, "", cr.getCourses().get(i).getOffering());
            Set<SctAssignment> sections = new HashSet<SctAssignment>();
            sections.add(new Section(0, 1, "x", new Subpart(0, "Lec", "Lec", cfg, null), p, null));
            Enrollment e = new Enrollment(cr, i, cfg, sections, assignment);
            Set<DistanceConflict.Conflict> dc = new HashSet<DistanceConflict.Conflict>();
            dc.add(new DistanceConflict.Conflict(s, e, (Section) sections.iterator().next(), e, (Section) sections.iterator().next()));
            w[i] = pw.getWeight(assignment, e, dc, null);
        }
        System.out.println(cr + ": " + df.format(w[0]) + "  " + df.format(w[1]) + "  " + df.format(w[2]));
    }
    System.out.println("With two distance conflicts:");
    for (Request r : s.getRequests()) {
        CourseRequest cr = (CourseRequest) r;
        double[] w = new double[] { 0.0, 0.0, 0.0 };
        for (int i = 0; i < cr.getCourses().size(); i++) {
            Config cfg = new Config(0l, -1, "", cr.getCourses().get(i).getOffering());
            Set<SctAssignment> sections = new HashSet<SctAssignment>();
            sections.add(new Section(0, 1, "x", new Subpart(0, "Lec", "Lec", cfg, null), p, null));
            Enrollment e = new Enrollment(cr, i, cfg, sections, assignment);
            Set<DistanceConflict.Conflict> dc = new HashSet<DistanceConflict.Conflict>();
            dc.add(new DistanceConflict.Conflict(s, e, (Section) sections.iterator().next(), e, (Section) sections.iterator().next()));
            dc.add(new DistanceConflict.Conflict(s, e, (Section) sections.iterator().next(), e, new Section(1, 1, "x", new Subpart(0, "Lec", "Lec", cfg, null), p, null)));
            w[i] = pw.getWeight(assignment, e, dc, null);
        }
        System.out.println(cr + ": " + df.format(w[0]) + "  " + df.format(w[1]) + "  " + df.format(w[2]));
    }
    System.out.println("With 25% time overlapping conflicts:");
    for (Request r : s.getRequests()) {
        CourseRequest cr = (CourseRequest) r;
        double[] w = new double[] { 0.0, 0.0, 0.0 };
        for (int i = 0; i < cr.getCourses().size(); i++) {
            Config cfg = new Config(0l, -1, "", cr.getCourses().get(i).getOffering());
            Set<SctAssignment> sections = new HashSet<SctAssignment>();
            sections.add(new Section(0, 1, "x", new Subpart(0, "Lec", "Lec", cfg, null), p, null));
            Enrollment e = new Enrollment(cr, i, cfg, sections, assignment);
            Set<TimeOverlapsCounter.Conflict> toc = new HashSet<TimeOverlapsCounter.Conflict>();
            toc.add(new TimeOverlapsCounter.Conflict(s, 3, e, sections.iterator().next(), e, sections.iterator().next()));
            w[i] = pw.getWeight(assignment, e, null, toc);
        }
        System.out.println(cr + ": " + df.format(w[0]) + "  " + df.format(w[1]) + "  " + df.format(w[2]));
    }
}

Example 5 with Student

use of org.cpsolver.studentsct.model.Student in project cpsolver by UniTime.

the class Test method loadLastLikeCourseDemandsXml.

/**
     * Load last-like students from an XML file (the one that is used to load
     * last like course demands table in the timetabling application)
     * @param model problem model
     * @param xml an XML file
     */
public static void loadLastLikeCourseDemandsXml(StudentSectioningModel model, File xml) {
    try {
        Document document = (new SAXReader()).read(xml);
        Element root = document.getRootElement();
        HashMap<Course, List<Request>> requests = new HashMap<Course, List<Request>>();
        long reqId = 0;
        for (Iterator<?> i = root.elementIterator("student"); i.hasNext(); ) {
            Element studentEl = (Element) i.next();
            Student student = new Student(Long.parseLong(studentEl.attributeValue("externalId")));
            student.setDummy(true);
            int priority = 0;
            HashSet<Course> reqCourses = new HashSet<Course>();
            for (Iterator<?> j = studentEl.elementIterator("studentCourse"); j.hasNext(); ) {
                Element courseEl = (Element) j.next();
                String subjectArea = courseEl.attributeValue("subject");
                String courseNbr = courseEl.attributeValue("courseNumber");
                Course course = null;
                offerings: for (Offering offering : model.getOfferings()) {
                    for (Course c : offering.getCourses()) {
                        if (c.getSubjectArea().equals(subjectArea) && c.getCourseNumber().equals(courseNbr)) {
                            course = c;
                            break offerings;
                        }
                    }
                }
                if (course == null && courseNbr.charAt(courseNbr.length() - 1) >= 'A' && courseNbr.charAt(courseNbr.length() - 1) <= 'Z') {
                    String courseNbrNoSfx = courseNbr.substring(0, courseNbr.length() - 1);
                    offerings: for (Offering offering : model.getOfferings()) {
                        for (Course c : offering.getCourses()) {
                            if (c.getSubjectArea().equals(subjectArea) && c.getCourseNumber().equals(courseNbrNoSfx)) {
                                course = c;
                                break offerings;
                            }
                        }
                    }
                }
                if (course == null) {
                    sLog.warn("Course " + subjectArea + " " + courseNbr + " not found.");
                } else {
                    if (!reqCourses.add(course)) {
                        sLog.warn("Course " + subjectArea + " " + courseNbr + " already requested.");
                    } else {
                        List<Course> courses = new ArrayList<Course>(1);
                        courses.add(course);
                        CourseRequest request = new CourseRequest(reqId++, priority++, false, student, courses, false, null);
                        List<Request> requestsThisCourse = requests.get(course);
                        if (requestsThisCourse == null) {
                            requestsThisCourse = new ArrayList<Request>();
                            requests.put(course, requestsThisCourse);
                        }
                        requestsThisCourse.add(request);
                    }
                }
            }
            if (!student.getRequests().isEmpty())
                model.addStudent(student);
        }
        for (Map.Entry<Course, List<Request>> entry : requests.entrySet()) {
            Course course = entry.getKey();
            List<Request> requestsThisCourse = entry.getValue();
            double weight = getLastLikeStudentWeight(course, 0, requestsThisCourse.size());
            for (Request request : requestsThisCourse) {
                request.setWeight(weight);
            }
        }
    } catch (Exception e) {
        sLog.error(e.getMessage(), e);
    }
}