Page 192 - Proceedings of the 2017 ITU Kaleidoscope

2017 ITU Kaleidoscope Academic Conference

Table 4. Results of Cluster and Iteration Experiments using Topic Modeling
Topic Keywords / Dirichlet Parameter
service network function information user application control support capability access
0
20765 19994 9555 8436 8171 7690 6946 6770 5974 5579
(a) Cluster: 1, Iteration: 1000
Topic Keywords / Dirichlet Parameter
service network function user information application support control capability ngn
0
2186 2029 1003 845 811 792 706 634 619 593
service network function information user application control support resource management
1
2126 2037 891 854 820 759 751 633 612 567
service network function information user application control support capability management
2
2111 1956 1050 891 811 808 685 679 621 603
network service function information user application support control resource management
3
2102 1998 912 867 819 754 719 707 550 549
service network function information user application support control access capability
4
2097 2021 902 848 812 788 742 725 624 605
service network function information user control application support capability management
5
2087 1920 952 836 783 754 728 638 634 583
service network function information user control application support capability access
6
2075 1958 971 851 808 705 700 653 587 538
service network function user information application support control access capability
7
2069 1994 1013 837 811 679 665 649 615 595
service network function information user application support control capability management
8
2034 1952 946 860 805 805 664 652 582 577
network service function application user information control support capability access
9
2025 1982 915 877 831 807 684 671 618 575
(b) Cluster: 10, Iteration: 1
Topic Keywords / Dirichlet Parameter
service ngn network user support access application provider call capability
0
5469 2949 2693 2319 1563 1496 1357 1350 1222 1195
service resource cloud management web virtual network function application component
1
5242 2188 2165 1397 1044 963 927 924 898 801
fe function network service control functional user information access multicast
2
3817 3547 2686 1943 1843 1687 1433 1396 1290 1161
content service function network user capability information functional IPTV delivery
3
3345 2105 1478 1386 1324 1309 1179 1145 1110 1048
network layer service VPN plane route control information function management
4
3068 2164 1325 1322 1062 1026 925 875 771 752
network application device capability iot datum service support information management
5
2916 2790 2746 1834 1777 1534 1498 1356 1095 1035
network Ipv6 id address based ngn data user access Ipv4
6
2266 1818 1488 1078 991 983 756 721 718 689
packet network IP performance traffic service qos parameter measurement delay
7
2241 2173 1454 1399 1254 1206 1030 937 844 829
connection information request service fe network multi flow access control
8
1249 1153 1086 1039 907 781 732 688 648 525
ATM network IP mpls MPLS lsp packet interwork label field
9
1133 1098 960 905 905 892 816 814 737 578
(c) Cluster: 10, Iteration: 1000
other documents, except documents including the MPLS (multiprotocol label switching). These keywords are
international standard document list, did not include the IoT correlated because the technologies have developed together
keyword as the representative topic. Therefore, it is not and international standards have been published together,
included in the international standard document list. In such as Recommendation ITU-T Y.1411: ATM-MPLS
conclusion, the occurrence rate of each keyword in each network interworking—Cell mode user plane interworking
document is the main element for trend analysis and finding
related documents. Table 5. Results of Topic Modeling
by Year Range with Y Series
TASIS extracted topic keywords by performing topic Year Keywords
modeling by the year range and using 252 documents of the Range
Y series as per Table 5. We constitute a year range of four 2016 – Service, Network, Cloud, Device, IoT,
years, because of the period for ITU-T Recommendations. 2013 Application, Capability, Access, Resource,
Function
Service and network are common keywords in the subject of 2012 – Service, FE, Network, Function, NGN,
Y series. The IP and GII of 10 keywords are extracted from 2009 Application, Capability, Multicast, IPv6, IPTV
1997 to 2000 as keywords. GII is global information 2008 – Service, Network, Layer, Function, IPv6, Web,
infrastructure and subject of recommendations Y.100– 2005 PSTN, VPN, ISDN, NGN
Y.999. IP is internet protocol. Documents including the IP 2004 – Service, Network, Packet, VPN, ATM, IP,
keyword have also been published, such as Recommendation 2001 MPLS, Mobile, Interwork, User
ITU-T Y.1001: IP frame work and Y.1231: IP Access 2000 – Network, Service, IP, Function, Interface,
Network Architecture, and so on. From 2001 to 2004, the 1997 Information, GII, ICA, Access, Communication
TASIS extracted ATM (automated teller machine) and
– 176 –