Promoting Semantic Interoperability
of Metadata for Directories of the Future

  Abstract

  New Approach to Metadata

Problem Domain

Proposed Approach

Team & Funding

  Research & Experimentation

  Research & Experimentation

Self-Organizing Maps

Semantic Facilitator ^{TM SM}

BREAK PAGE
 [Live demo of prototype tool]

Semantic Facilitator ^{TM SM} / prototype

SF / Choose LDAP (schema repository)

SF / Setting reference set (SOM input feature vector)

SF / review input features & objectClasses to cluster

SF / select SOM parameters (recommended is default…)

SF / select interface option (rectangular implemented…)

SF / resulting map (red tags added to highlight person objects)

SF / Hide(Show) Node Text

SF / nearness of eduPerson, gsuPerson

BREAK PAGE
 [Live demo of prototype tool]

SF / Uncheck all – select reference objectClasses

SF / use inetOrgPerson, eduPerson, gsuPerson as reference

SF / submit clustering with reference set

SF / use default SOM parameter values

SF / improvement in clustering…(person at extreme right off screen)

BREAK PAGE
 [Live demo of prototype tool]

SF / add person, organizationalPerson to reference set…

SF / revised reference set…

SF / incremented reference set improves clustering…

Summary of preceding

BREAK PAGE
 [Live demo of prototype tool]

SF / scenario:  Find UAB person objects

SF / What if we used “person” reference set?
(person, organizationalPerson, inetOrgPerson, residentialPerson, newPilotPerson, eduperson)

SF / Notice that person objects are now clustered more closely… and

SF / “unstacking the objects” finds “uab-” objects:  uabPerson, uabAlum, uabEmployee, uabStudent as well as pabPerson, uabEntity...

Summary of preceding

BREAK PAGE
 [Live demo of prototype tool]

SF / find “IBM person” objects in Secureway (IBM) vendor delivered schema

SF / use defaults and resulting map doesn’t immediately find “persons”

SF / Show Node Text for 301 objects is complex

SF / select “ePerson” as a start for input features vector (reference set)…

SF / now several person objects are found…

SF / unstack & Show Node Text to reveal person object names…

SF / using additional person objects to expand reference set…

SF / finds more person objects…

SF / Show Node Text reveals others…

SF / unstack objects, find Secureway person objects, including eContactPerson, iGNPerson…

SF / in fact, inspecting nearby nodes finds eGSOuser, eUser

Summary of preceding

BREAK PAGE
 [Live demo of prototype tool]

SF / Cluster multiple schemas: CMU (62 objects) and UMich (66 objects)

SF / unstack & Show Node Text… cmuPerson, umichPerson, eduPerson

SF / Cluster GSU, UFL, UMD, UCD – 587 total objects
(Novell, OpenLDAP, Secureway, iPlanet)

SF / four schemas clustered – let’s check eduPerson

SF / unstack & Show Node Text – objects exploded out from middle right of screen (3 eduPerson, gsu/ufl/um/admin/liPerson)

Summary of preceding

Following slides...

SF / consider time steps in SOM
UMich OpenLDAP

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
1000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
2000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
3000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
4000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
5000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
6000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
7000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
8000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
9000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
10000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
11000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
12000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
13000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
14000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
15000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
16000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
17000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
18000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
19000 iterations

SF / SOM parameters xsize=7, ysize=9, neighborhood=2
20000 iterations

Summary of preceding

LSA/LSI analysis

LSA/LSI analysis
localDomainPerson

LSA/LSI Analysis

Following slides…

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Slide 104

LSA/LSI – finding “k”

"DRAFT results"

Summary of preceding

SFA
Stereoscopic Field Analyzer

Stereoscopic Field Analyzer: weather data

BREAK PAGE
 [Live demo of prototype tool]

Stereoscopic Field Analyzer (SFA)

SFA – select data file

SFA – select glyph type

SFA – scale glyphs

SFA – data, glyph, glyph-size selected

SFA – Edit Mappings

SFA – interactively…

SFA – interactively rotate…

SFA – interactively rotate space…

Summary of preceding

BREAK PAGE
 [Live demo of prototype tool]

91attr 86obj EDIR with sim / cn, fullname, emailAddress (x, y, z)

91attr 86obj EDIR with sim / cn, fullname, emailAddress, + color emailAddress

91attr 86obj EDIR with sim / cn, fullname, emailAddress, + color emailAddress + opacity cn

91attr 86obj EDIR with sim / cn, fullname, emailAddress, + color emailAddress + opacity cn + xsize fullname

Summary of preceding

BREAK PAGE
 [Live demo of prototype tool]

91attr 86obj EDIR with sim / cn, fullname, emailAddress

91attr 86obj EDIR with sim / cn, fullname, emailAddress + groupMembership

91attr 86obj EDIR with sim / cn, fullname, emailAddress + groupMembership
open 2^nd data set (497 attr, 86obj EDIR) …

91attr 86obj EDIR with sim / cn, fullname, emailAddress + groupMembership
open 2^nd data set… select different glyph type

91attr 86obj EDIR with sim / cn, fullname, emailAddress + groupMembership
open 2^nd data set, select different glyph type… display together

91attr 86obj EDIR with sim / cn, fullname, emailAddress + groupMembership
open 2^nd data set… edit mappings 2^nd data set

91attr 86obj EDIR with sim / cn, fullname, emailAddress + groupMembership
open 2^nd data set… select sn, fullname, displayName, givenName, groupid

91attr 86obj EDIR with sim / cn, fullname, emailAddress + groupMembership
open 2^nd data set… compare… (iterate)

Summary of preceding

BREAK PAGE
 [Live demo of prototype tool]

SFA – way cool options… still investigating what’s there & what’s needed

1,000 words…

…

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Overall Summary

Concepts & Challenges

Near Future Work

Q&A