| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April 2016 1 Machine-based issuing of DNB Subject Categories.

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Presentation transcript:

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine in the German National Library Frank Busse

Outline 1.General Information 2.Automatic Classification of DNB Subject Categories 3.Automatic Classification of DDC Short Numbers for Medicine | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April

General Information | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April

4 Automated Cataloguing – why?

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April  2009Start of PETRUS project  2010 Ceasing of intellectual cataloguing of online publications  2012 Automatic classification / DNB Subject Categories  2014 Automatic indexing  2015 Automatic classification / DDC Short Numbers  2015 PETRUS project completed Timeline

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Further information: Subject cataloguing DNB Subject Categories Subject headings DDC numbers Subject Cataloguing at the DNB

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Automatic Classification of DNB Subject Categories

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April  Since 2004  Based on Dewey Decimal Classification (DDC)  102 categoriescategories DNB Subject Categories

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Economics 560 Paleontology 640 Home and family management Examples of Subject Categories

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Automatic Classification  Start: 2012  Method: machine learning / SVM  Document type:  All online publications / without fiction  PDF (since 2012)  Epub (since 2015)  Language Ger/Eng  Volume: online publications (03/2016)

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April  Supervised learning (Learning by example)  Pattern recognition  Generalization of rules  Classifying unknown objects Machine Learning

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April  Averbis GmbH / Freiburg im Breisgau Averbis GmbH  Averbis Extraction Platform (AEP)  Version 2.2.2a  Improvements and further development Software

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Workflow Training  Base  Create a model  Software:  Averbis Software Routine  Daily processing of new online publications  Retro-processing  Software:  Averbis Software  DNB Interface  CBS

Routine | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Training Selection Training data Parameter setting Linguistic analysis Training

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Training Data  Online publications & digitised Tables of Contents (ToC)  Since 2004  Language Ger/Eng  April 2016: Online publications & ToC

Training Workflow 17 | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April 2016 Selection Training data Parameter setting Linguistic analysis Training

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Parameter Setting  Language  Text length  Metadata weighting  Exclusion conditions  etc.

Training Workflow 19 | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April 2016 Selection Training data Parameter setting Linguistic analysis Training

Training Workflow 20 | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April 2016 Selection Training data Parameter setting Linguistic analysis Training

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Quality Management sample check data analysis improvement Two ways of generating sample data:  Intellectual supervision  Comparison with printed edition

Results Classified objects: Sample check: (18%) Result: 75% correct | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April DDC Short Numbers for Medicine

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April DDC Short Numbers for Medicine  Developed in 2006/2007  Classification of printed medical theses  Fast and time-saving

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Example Book content: Study Overweight Children Kiel DNB-SC610 DDC Short Number

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April DDC Short Numbers  Start: Oct  Method: machine learning / SVM  Document type:  Subject Category 610 „Medicine and health“  Online publications (PDF / Epub)  Language Ger/Eng  Volume: online publications (03/2016)

Results October – December 2015 Classified objects: Sample check: 574 (14%) Result: 74% correct | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April

Future challenges | 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April  Improve results  Development of DDC Short Numbers for other DNB Subject Categories  No „automatic DDC“ with this tool

| 29 | Machine-based issuing of DNB Subject Categories and DDC Short Numbers for Medicine | 25. April Thank you for your attention! Questions? Frank Busse German National Library Section Automatic Indexing, Online Publications