UB LIS 571 Soergel Lecture 13.2b. In-lecture Exercise Exhaustivity and Specificity of Indexing London Education Classification (LEC) vs. DDC Dagobert

UB LIS 571 Soergel Lecture 13.2b. In-lecture Exercise Exhaustivity and Specificity of Indexing London Education Classification (LEC) vs. DDC Dagobert Soergel Department of Library and Information Studies Graduate School of Education University at Buffalo Lecture notes p. 422 - 427 Includes audio.

Introduction Read / study Lecture Notes p. 422 423 Then listen to the audio (2 min.) and read the rest of this slide There are two steps in dealing with each document. Step 1. Determine the semantic factors and enter the resulting elemental concepts in the col. for DDC Step2. Analysis. Step 2a. For each row that has both LEC and DDC, underline Same if both concepts are equally specific LEC if the concept from LEC is more specific DDC if the concept from DDC is more specific Now, in the last row, enter the number of concepts for which specificity is the same, LEC is more specific, DDC is more specific Step 2b. Fill in the numbers in the small table on the bottom of the page (to the side on the slides) and the final conclusion on the bottom Next slide 2

Your turn Analyze Documents 1, 2, and 3, Lecture Notes p. 425 427 Do your work on the paper form for Document 1, p. 425 in the Lecture Notes. The slides for Document 1 take you through the steps The first slide for Document 1 shows what to do for Step 1. Complete that part on the paper form, The second slide for Document. 1 shows the results of Step 1, the semantic factoring. Compare with your own. If the slide is different, you may want to correct your work on p. 425, then do Step 2, analysis The third slide for Document 1 shows the results of Step 2. Compare your own analysis. If your analysis is the same, you are done with Document1. If not, you may want to listen to the audio. Repeat for Documents 2 and 3 No audio 3

The next slide records these results Comparison LEC DDC. Document 0. Example, Step 1, determine semantic factors (example also in the Lecture Notes) 3373.19 Organization and activities in secondary education > curricula Note: This class caption is all you need to semantic factor the DDC class to arrive at the elemental concepts to put in column 2. Conant, James Bryant, 1893-1978 The comprehensive high school; a second report to interested citizens Elemental LEC conceptsElemental concepts from DDC class Which scheme is more specific? Rib Comprehensive (type of school) SAME LEC DDC Rek Secondary school-upper SAME LEC DDC Mab Curriculum, syllabus, in general SAME LEC DDC Bept Statistics of education SAME LEC DDC Bap Educational opportunities, access to education SAME LEC DDC No. of concepts ExhaustivitySpecificity LEC elemental concepts #LEC same as DDC # DDC elemental concepts #LEC more specific # DDC more specific # More exhaustive : (LEC or DDC) (more elemental concepts) Overall more specific: LEC This is what you will see in a slide for Step 1 Organization and activities in secondary education just boils down to Secondary education This is straight forward: Curricula is simply Curricula

5 Comparison LEC DDC. Document 0. Example, Step 1 completed, now working on Step 2, Analysis 3373.19 Organization and activities in secondary education > curricula Note: This class caption is all you need to semantic factor the DDC class to arrive at the elemental concepts to put in column 2. Conant, James Bryant, 1893-1978 The comprehensive high school; a second report to interested citizens Elemental LEC conceptsElemental concepts from DDC class Which scheme is more specific? Rib Comprehensive (type of school) SAME LEC DDC Rek Secondary school-upperSecondary education SAME LEC DDC Mab Curriculum, syllabus, in generalCurricula SAME LEC DDC Bept Statistics of education SAME LEC DDC Bap Educational opportunities, access to education SAME LEC DDC No. of concepts ExhaustivitySpecificity LEC elemental concepts #LEC same as DDC # DDC elemental concepts #LEC more specific # DDC more specific # More exhaustive : (LEC or DDC) (more elemental concepts) Overall more specific: (LEC or DDC) For discussion and result of the analysis, go to the next slide

6 Comparison LEC DDC. Document 0. Example, completed 3373.19 Organization and activities in secondary education > curricula Note: This class caption is all you need to semantic factor the DDC class to arrive at the elemental concepts to put in column 2. Conant, James Bryant, 1893-1978 The comprehensive high school; a second report to interested citizens Elemental LEC conceptsElemental concepts from DDC class Which scheme is more specific? Rib Comprehensive (type of school) SAME LEC DDC Rek Secondary school-upperSecondary education SAME LEC DDC Mab Curriculum, syllabus, in generalCurricula SAME LEC DDC Bept Statistics of education SAME LEC DDC Bap Educational opportunities, access to education SAME LEC DDC No. of concepts110 ExhaustivitySpecificity LEC elemental concepts #5LEC same as DDC #1 DDC elemental concepts #2LEC more specific #1 DDC more specific #0 More exhaustive (more el. concepts): LEC Overall more specific: LEC Audio 4 min

Your turn Analyze Documents 1, 2, and 3, Lecture Notes p. 425 427 Do your work on the paper form for Document 1, p. 425 in the Lecture Notes. The slides for Document 1 take you through the steps The first slide for Document 1 shows what to do for Step 1. Complete that part on the paper form, The second slide for Document. 1 shows the results of Step 1, the semantic factoring. Compare with your own. If the slide is different, you may want to correct your work on p. 425, then do Step 2, analysis The third slide for Document 1 shows the results of Step 2. Compare your own analysis. If your analysis is the same, you are done with Document1. If not, you may want to listen to the audio. Repeat for Documents 2 and 3 No audio 7

8 Comparison LEC DDC. Document 1. Your work, Step 1 to do (in the Lecture Notes) LEC concepts Elemental concepts from DDC class Which scheme is more specific? Sab Institutions of higher education SAME LEC DDC Hab Management of education SAME LEC DDC Gan Dean SAME LEC DDC Ban Sociology of education SAME LEC DDC No. of concepts 378.111Higher Education > Organization and management; curriculums > (administrative) Academic staff Dibden, Arthur James, 1919 . The academic deanship in American colleges and universities Exhaustivity Specificity LEC elemental concepts # LEC same as DDC # DDC elemental concepts # LEC more specific # DDC more specific # More exhaustive: (LEC or DDC) Overall more specific: (LEC or DDC)

9 Comparison LEC DDC. Document 1. Your work, Step 1 completed, Step 2 to do (in the Lecture Notes) LEC concepts Elemental concepts from DDC class Which scheme is more specific? Sab Institutions of higher education Higher education SAME LEC DDC Hab Management of education Organization and management SAME LEC DDC Gan Dean (Administration) Academic staff SAME LEC DDC Ban Sociology of education SAME LEC DDC No. of concepts 378.111Higher Education > Organization and management; curriculums > (administrative) Academic staff Dibden, Arthur James, 1919 . The academic deanship in American colleges and universities Exhaustivity Specificity LEC elemental concepts # LEC same as DDC # DDC elemental concepts # LEC more specific # DDC more specific # More exhaustive: (LEC or DDC) Overall more specific: (LEC or DDC) I hope this is clear without further explanation. Step 2 and results discussed on next slide.

10 Comparison LEC DDC. Document 1. Completed LEC concepts Elemental concepts from DDC class Which scheme is more specific? Sab Institutions of higher education Higher education SAME LEC DDC Hab Management of education Organization and management SAME LEC DDC Gan Dean (Administration) Academic staff SAME LEC DDC Ban Sociology of education SAME LEC DDC No. of concepts 2 1 0 378.111Higher Education > Organization and management; curriculums > (administrative) Academic staff Dibden, Arthur James, 1919 . The academic deanship in American colleges and universities Exhaustivity Specificity LEC elemental concepts # 4 LEC same as DDC # 2 DDC elemental concepts # 3 LEC more specific # 1 DDC more specific # 0 More exhaustive: LEC Overall more specific: LEC If your analysis is different, you may want to listen to the audio (2 min).

11 Comparison LEC DDC. Document 2. Your work, Step 1 to do (in the Lecture Notes) 379.1214Finance, supervision, control of public education > Assistance by central governments > By national governments > For higher education Wakefield, Rowan Albert, 1919 Sources of Federal support for higher education. Experimental systems for a national information network. LEC concepts Elemental concepts from DDC class Which scheme is more specific? Sab Higher education SAME LEC DDC Dvo Computer SAME LEC DDC Buxt Information services SAME LEC DDC Bid Government: central SAME LEC DDC Betm Financial resources SAME LEC DDC Bepd Economics and education SAME LEC DDC No. of concepts Exhaustivity Specificity LEC elemental concepts # LEC same as DDC # DDC elemental concepts # LEC more specific # DDC more specific # More exhaustive: (LEC or DDC) Overall more specific: (LEC or DDC)

12 Comparison LEC DDC. Document 2. Step 1 completed, Step 2 to do (in the Lecture Notes) 379.1214Finance, supervision, control of public education > Assistance by central governments > By national governments > For higher education Wakefield, Rowan Albert, 1919 Sources of Federal support for higher education. Experimental systems for a national information network. LEC concepts Elemental concepts from DDC class Which scheme is more specific? Sab Higher education Higher education SAME LEC DDC Dvo Computer SAME LEC DDC Buxt Information services SAME LEC DDC Bid Government: central Central governments SAME LEC DDC Betm Financial resources Financial assistance SAME LEC DDC Bepd Economics and education SAME LEC DDC No. of concepts Exhaustivity Specificity LEC elemental concepts # LEC same as DDC # DDC elemental concepts # LEC more specific # DDC more specific # More exhaustive: (LEC or DDC) Overall more specific: (LEC or DDC)

13 Comparison LEC DDC. Document 2. Completed 379.1214Finance, supervision, control of public education > Assistance by central governments > By national governments > For higher education Wakefield, Rowan Albert, 1919 Sources of Federal support for higher education. Experimental systems for a national information network. LEC concepts Elemental concepts from DDC class Which scheme is more specific? Sab Higher education Higher education SAME LEC DDC Dvo Computer SAME LEC DDC Buxt Information services SAME LEC DDC Bid Government: central Central governments SAME LEC DDC Betm Financial resources Financial assistance SAME LEC DDC Bepd Economics and education SAME LEC DDC No. of concepts 2 0 1 Exhaustivity Specificity LEC elemental concepts # 6 LEC same as DDC # 2 DDC elemental concepts # 3 LEC more specific # 0 DDC more specific # 1 More exhaustive: LEC Overall more specific: DDC I hope that by now this is clear. If you need further clarification, pleas ask

14 Comparison LEC DDC. Document 3. Step 1 to do (in Lecture Notes) 027.8 School libraries Delaney, Jack J. The school librarian. Human relations problems. LEC concepts Elemental concepts from DDC class Which scheme is more specific? Svg School child, pupil SAME LEC DDC Rag School education and systems SAME LEC DDC Lus Library SAME LEC DDC Jed Discipline (psychological aspects of relationship) SAME LEC DDC Hab Management of education SAME LEC DDC Get Librarian, teacher librarian SAME LEC DDC Fal Role, responsibility SAME LEC DDC No. of concepts Exhaustivity Specificity LEC elemental concepts # LEC same as DDC # DDC elemental concepts # LEC more specific # DDC more specific More exhaustive: (LEC or DDC) Overall more specific: (LEC or DDC)

15 Comparison LEC DDC. Document 3. Step 1 done, Step 2 to do (in Lecture Notes) 027.8 School libraries Delaney, Jack J. The school librarian. Human relations problems. LEC concepts Elemental concepts from DDC class Which scheme is more specific? Svg School child, pupil SAME LEC DDC Rag School education and systems School- (elementary/secondary) SAME LEC DDC Lus Library Libraries SAME LEC DDC Jed Discipline (psychological aspects of relationship) SAME LEC DDC Hab Management of education SAME LEC DDC Get Librarian, teacher librarian SAME LEC DDC Fal Role, responsibility SAME LEC DDC No. of concepts Exhaustivity Specificity LEC elemental concepts # LEC same as DDC DDC elemental concepts # LEC more specific DDC more specific More exhaustive: ( LEC or DDC) Overall more specific: (LEC or DDC)

16 Comparison LEC DDC. Document 3. Completed 027.8 School libraries Delaney, Jack J. The school librarian. Human relations problems. LEC concepts Elemental concepts from DDC class Which scheme is more specific? Svg School child, pupil SAME LEC DDC Rag School education and systems School- (elementary/secondary) SAME LEC DDC Lus Library Libraries SAME LEC DDC Jed Discipline (psychological aspects of relationship) SAME LEC DDC Hab Management of education SAME LEC DDC Get Librarian, teacher librarian SAME LEC DDC Fal Role, responsibility SAME LEC DDC No. of concepts 2 0 0 Exhaustivity Specificity LEC elemental concepts 7 LEC same as DDC 2 DDC elemental concepts 2 LEC more specific 0 DDC more specific 0 More exhaustive: LEC Overall more specific: Both the same

Exhaustivity and Specificity of Indexing London Education Classification (LEC) vs. DDC This completes the exercise As a general tendency, indexing with LEC is both more exhaustive and more specific than DDC. More generally, indexing with several elemental descriptors that together express what the document is about and relevant more, enables higher exhaustivity than indexing with one precombined descriptor from a classification designed for shelf arrangement. Indexing with several elemental descriptors also tends to be more specific since a shelf classification may not have a precombined descriptor for a specific combination such as transportation in Bavaria; the available precombined descriptor may by transportation in Germany. But depending on the particular systems being compared, for some documents indexing with system A may be more specific, for other documents system B. 17