S?st?

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S?st?

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... .htm ERIC Thesaurus http://searcheric.org/scripts/ewiz/amain4.asp Eurovoc Thesaurus http://europa.eu.int/celex/eurovoc/ UNESCO Thesaurus http://www.ulcc.ac.uk ... – PowerPoint PPT presentation

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Title: S?st?

1
S?st?µata Teµat???? ???sßas??

?. ?apa?e?d???? (papatheodor_at_ionio.gr)?
???ast???? ??f?a??? ??ß???????? ?a? ??e?t???????
??µ?s?e?s??
?µ?µa ???e????µ?a? ??ß?????????µ?a?
????? ?a?ep?st?µ??

2
T?sa????

T?sa???? e??a? t? ?e??????? ???? µ?a? e?e???µe???
???ssa? e??et???as??, d?µ?µ???? µe t??p? ?ste ?a
?p?d??????ta? saf?? ?? a priori s??se?? µeta??
e?????? (??a pa??de??µa, ?? p?at?te?e?
ste??te?e?). (ap? ???? 1321)?

3
???s?µ?t?ta

?? ??sa???? µp????? ?a ???s?µ?p??????? ap? t???
epa??e?µat?e? se d?ad??as?e? ?p??
???et???as? ?????? (indexing thesaurus) ??
e?e???µe?? ?e??????? p?? pa???e? ? T?sa????
???s?µe?e? st? d?ad??as?a t?? e??et???as??,
????? ?a pe?????fe? t?? ep?st?µ????? p?? s?st?
ta????µ?s?. ?e? e??a? ? e?d??? ???????a e???
ep?st?µ??a a??? ?????? ap?de?t?? ?a?
???s?µ?p????µe??? ????, d??ad? ? f?s??? ???ssa.
??????s? d?µ?? ?a? pe??e??µ????.

4
???s?µ?t?ta

???? ?a? ap? t??? te?????? ???ste? st??
??a??t?s? a???t?s? (search thesaurus)?
A?a??t?s? µe ???e?? ??e?d?? ? T?sa???? pa???e? t?
?e??????a µe t? ?p??? µp??e? ?a ße?t??se? t??
d?ad??as?a a?a??t?s?? µe a?t?µat? t??p? ?
d?ad?ast???. µe ???e?? ??e?d??, ?a? ep?s??
p??sf??eta? ??a ep??tas? e??t?µat??. ? a?a??t?s?
a?t? µp??e? ?a p?a?µat?p????e? e?te se d?µ?µ???
(e??et???asµ???) pe??e??µe??), e?te se e??t?µa
e?e??e??? ?e?µ???? (free text query)?
F????µ?t??s? ? ???t?? t?? Teµat???? ped??? p??
pa???e? µp??e? ?a ???s?µ?p????e? ??a t??
e?e?e???s? t?? ap? t?? ???st?.
? ßas???? s??p?? t?? T?sa???? e??a? ? ?a??d???s?
t?s? t?? e??et???ast? ?s? ?a? t?? ???st? ?a
ep??????? t?? ?d?? ??? ??a t?? ?d?a ?????a

5
???s?µ?t?ta

?? T?sa???? t?p??? ???s?µ?p?????ta? ?? e??a?e?a
st? d?ad??as?a t?? ?ste??-s??d?asµ????
a?a??t?s??, ?p?? ? ???st?? ??e? t? d??at?t?ta ?a
ep????e? ? ?d??? t?? s??d?asµ? t?? e?????? p?? ?a
a?a??t?se? .
?p????? ep?s?? ?a efa?µ?st??? se ?e?a???????
?ata??????, p??-s??d?asµ??a e??et???a ?a? ta
S?st?µata ?a????µ?s??. ?a te?e?ta?a ?????a µe t??
a??pt??? ???? e??a?e??? p??sßas?? ?p???e? ?
a????? s??e??as?a µeta?? t?? µe??d?? ?p?? ?p?? ?
??t?µat? ?at??????p???s? , ? ??e??e?? ??a??t?s?
?.?.p.

6
?? ????

S???e???µ??e? ??t?t?te?
????µata ?a? ta µ??? a?t?? ?ef???, t?ap???a,
?t???a, µ???ß?a
????? ?????, aµ?a?t??, ???µata
?f???µ??e? ?????e?
?????e?e? ?a? ?e????ta a??pt???, d?at???s?,
p??eµ??, e??t??
?f???µ??e? ??t?t?te?, ?d??t?te? d??a??, a?t???,
??µ??, ap?d?s?
?p?st?µ????? ped?a ??µe?a, ß?ß?????????µ?a,
p????f?????
????de? µ?t??s?? µ?t?a, ???????aµµa
?t?µ???? ??t?t?te?, ????a ??s?ast??? ????da,
????pa??? ???s?, ????? ?a?/µ??, ??taµ?? ???e???

7
?????? - p?????t????

S???e???µ??e? ??t?t?te?
?et??s?µa ??s?ast??? (p?? apa?t??? st? p?sa
p????), st?? p?????t??? p?a??te?, pa?d??, µ???
s?µat??, (e?? ?µ?? apa?t??ta? µ?a f??? st? ?d??
s?µa, p??t?µ?ta? ? e?????, p.? p?d?a, a??? st?µa,
a?ap?e?st??? s?st?µa)?
µ? µet??s?µa ??s?ast??? (p?? apa?t??? st? p?s?
p???), st?? e???? a???µ????, ?????, ???? (e??
p???e?ta? ??a ?µ?da µe p????? s???st?se?, t?te
???s?µ?p??e?ta? p?????t????, p.? f???ta, ???µata,
???µata a???µ?????, ????ße?)?

8
?????? - p?????t????

?f???µ??e? ?????e?
???s?µ?p??e?ta? ? e?????, e?t?? e?? p???e?ta? ??a
?µ?da µe p????? s???st?se? d?a????sµ??,
?ap?ta??sµ??, µ?aµe?a??sµ??, µeta???????a,
s?s?e?as?a, d?????s?, te?????, a??? f?s????
d?e??as?e?, ??µ???? ?d??t?te?,
?t?µ???? ??t?t?te?, ????a ??s?ast???
???s?µ?p??e?ta? ? e????? Big Ben, British
Library, Ga???a, ?a??e???a?

9
S??t?µ???af?e?

?S d?e??????st??? s?µe??s? (SN - Scope Note)?
?? ???s?µ?p???se (use)?
?? ???s?µ?p???se a?t? (UF used for)?
?? ???? ????f?? (TT top term)?
?? p?at?te??? ???? (BT broad term)?
??G p?at?te??? ???? ??????
??? p?at?te??? ???? µ?????
?? e?d???te??? ???? (NT narrow term)?
??G e?d???te??? ???? ??????
??? e?d???te??? ???? µ?????
S? s?et???? ???? (RT Related term)?

10
S???et?? ????

?p????? ?a a?a?????? µ??f??????? sta s?stat???
t??
?pe?e??as?a µet???? ?? ??????G?S?? ???????
?????e?e?a??? ?????aµµat?sµ?? ?? G????S??S
???G??S (d?af??et???? ????)?
?st?a t? ???µa p?? p??sd?????e? t?? e???te?? t???
??af???p???t?? p?? d?af???p??e? t?? est?a (G??
??????, ????S????)?

11
S???et?? ????

??p???? s???et?? ???? de µp????? ?a ?p?st???
s??ta?t??? d?a??es?
??????? ?????????
???e??? ????
??????G?S?? ???????O?, ?????? ????O?
?ta? ? s??ta?t??? d?a??es? ?a ????ta? a?t?a
as?fe?a? ? aµf?sß?t?s??
???S??? ?O????? ???S??? ?O?????? ? ?O?????
???S???S ()?
?ta? ? s???et?? ???? p?? e?f???e? pa??µ???s? µe
??p??? ?s?et? a?t??e?µe?? ? ?e?????
???? ???????

12
S???et?? ????

?ta? ? d????es? p???p???te? t?? p??s???? ????
????? ?????????? ????? p?? ???s?µ?p??e?
????????? ?? ???S???
G????? ????? G????? ??a ???S??S?? ap? t?? ????
?ta? ? d?af???p???t?? ??e? ??se? t? s?µas?a t??
S?????S? S???GG???S ???????S
?ta? e??a? ????a ???µata ? f??se?? p?? pe???????
????a ???µata
??T?G????? T?O????

13
S???et?? ????

µe t? se??? p?? ????? st? f?s??? ???ssa
?????G?S???? ??????
?p?????? ???s?? s???et?? ????
e?te ???s?µ?p????µe s???et??? ????? ??a t??
e??tt?s? t?? pe????af???, µe ??st?? ??a
????d?ste?? ?e??????? e??et???as??
e?te µe?????µe t?? ???? t?? ?e????????
e??et???as??, µe t? d?a??es? ???? se ap???ste????
?a? µe ap?d?s? µe?a??te??? a???µ?? ???? a??
te?µ????

14
?????s? s???et?? ????

?ta? ? est?a a?af??eta? se µ?a ?d??t?ta ? t?
tµ?µa ?a? ? d?af???p???t?? a?t?p??s?pe?e? t??
???t?ta ? t?? ?t?t??a t?? ?d??t?ta? ? t??
tµ?µat??
??????S ????S??FO? (est?a ??????S, (µ????,
d?af???p???t?? ????S??FO?, ???) -gt ????S??F?S
??????
??????? ???F??S -gt ???F?S ???????
?ta? t? ???µa µ?a? µetaßat???? e????e?a?
(S????S??) de? p??pe? ?a t??p?p??e?ta? ap? t?
???µa t?? a?t??e?µ???? p??? st? ?p??? as?e?ta? ?
e????e?a (????) -gt S????S?? ????

15
?????s? s???et?? ????

a?t?st??fa t? ???µa e??? p???µat?? ? ??????
µp??e? ?a t??p?p????e? ap? t? ???µa µ?a?
e????e?a? p?? as?e?ta? se a?t?
S????S???? ????
??????? ??????
t? ???µa µ?a? aµet?ßat?? e????e?a? de? p??pe? ?a
t??p?p??e?ta? ap? t? ???µa t?? e?te?est? t??
e????e?a?
???????? F??O? -gt ???????? F???
a?t??eta t? ???µa e??? p???µat?? t??p?p??e?ta?
ap? t? ???µa aµet?ßat?? e????e?a? st?? ?p??a
eµp???eta?
??????????? ??????
????????? ???????

16
??e??????st???? s?µe??se??

de?????? t?? pe?????sµ??? s?µas?a µe t?? ?p??a
??a? ???? ???s?µ?p??e?ta?, ap???e???ta? ???e?
p??a??? e?µ??e?e?
???a e?d? p????f???a?
?µe??µ???a ap?d???? ???? ? epa?ap??sd????sµ?? t??
??????? t??
p??? t?? ????
?d???e? ??a e??et???ast??
S????????S ??????????O?
?S 1 GHz 300 GHz

17
S?????µa

?e d?af??et??? p????e?s? p?t?a ?????
?a???? ep?st?µ?????? ???µas?e? asp?????
a?et?sa???????? ???
???f??e? ???µas?e? ??a t? ?d?? ??µa
as???e?a-??s?? ??s?µa
????? ?a? ep?s?µ? ???µas?a ?µ????? µ??????
t?????sa ? p??t?µ?µe?? ???µas?a ??a?t? ???? p??
????? ?epe?as?e? ????? ????
???? ? e??????? µ??f? ?e??? ep?d?s?
d?af??et??? ??????af?a ta??d? ta?e?d?
s??t?µ???af?a p????? ???µas?a ???
?e????????? ??pa?de?t??? ?d??µata
a?a?e?t??? ? s??d?asµ??? µ??f? e??? s???et??
???? ????????a t?? ???? ????????a ??a
S?ed?? s?????µa
d?af??et???? ap????se?? p?t?a pet??d?
ß?tsa??
???as?a - ???as?a

18
S??des? s?????µ??

??, ??
??????S
?? ??d?e?
??d?e? ?? ??????S

19
S??se?? ?e?a???a?

??, ??
G????? e?d??? ??G, ??G
?????? ????, ???, ???

20
?t???ta desµ??

µe????? f???? pa?eµß???eta? st?? ?e?a???a µ?a
et???ta desµ?? ??a ?a de??e? p??? ?a?a?t???st???
???s?µ?p??????e ??a ?a d?a???se? t?? t??? p??
a?t?p??s?pe?eta? ap? t?? p?at?te?? ??? sta e?d?
t??
??????????
?at? ????t???a d??aµ?
??????????????? ??????????
????????? ??????????
?at? s??p?
?GO??S???? ??????????
???O????S ???S?S

21
S?et???? ????

???? p?? a?????? st?? ?d?a ?at?????a ?a? ??
??????? t??? ep??a??pt??ta?, a??? de? e??a?
?s?d??aµ??
??????
?? T???SS?? ???????
S? ?????
?????
?? T???SS?? ???????
S? ??????
???? µe ?????e?e?a?? ? pa?????? s??s?
???????? ????? ????
?? ???? ?? ???????? ?? ????????
?? ????? S? ??????? S? ???????
?? ???????

22
S?et???? ????

???? se d?af??et???? ?at?????e?
ep?st?µ? ?a? fa???µe?a p?? µe?et?
??S??????
S? ??S?
?e?t?????a ? d?ad??as?a ?a? t? µ?s? ? ???a?? t??
??????G?S?? ???????O?
S? S?S???? ?????G?S?O?
e????e?a ?a? t? p????? t??, ? t? a?t??e?µe?? t??,
? t? p??s?p? p?? ?f?stata? t?? e????e?a
?F??S? F?????S?
S? ?F?S?? S? F?????S?????

23
S?et???? ????

a?t??e?µe?a ? fa???µe?a ?a? ?d??t?t?? t???
????????? ??????????
S? ?????????? S? ??????????
?????e? s?et???µe?e? µe t?? p????e?s? t???
?????????S ????????
S? ???????? S? ?????????S
s??s? a?t?a? a?t?at??
???T?S T?????S
S? T?????S S? ???T?S

24
??a?efa?a??s?
25
??µ??????a T?sa????

?pa?????? ?pe?e??as?a t?? ???? p?? ?p?????? sta
te?µ???a ap? ?p?????ta e??et???a, ?e????,
ta????µ?e? ?a? ?ata?t????ta? ??ste? ???? ap?
e?d????? st? ???st??? a?t??e?µe??
?pa?????? ??a???? ???? ap? a?t?p??s?pe?t????
s??????? te?µ????? µe t? se??? eµf???s?? t???.
??µ??????a ??sa???? ap? t??? ste??te???? p??? t??
e???te???? ?????
S?????? ???s?µ?p????µe ?a? t?? d?? p??se???se??

26
Teµat???? ???? ?a? ?efa??de?