{"version":"https:\/\/jsonfeed.org\/version\/1","title":"Bibliotekarien.se - Blogg","home_page_url":"https:\/\/bibliotekarien.se\/en\/blog","feed_url":"https:\/\/bibliotekarien.se\/en\/blog.json","description":null,"author":{"name":"Bibliotekarien"},"items":[{"title":"Three roads to Libris vocabularies \u2014 SPARQL, find, and EMM","date_published":"2026-05-29T06:43:04+00:00","id":"https:\/\/bibliotekarien.se\/en\/blog\/tre-vaegar-till-libris-vokabulaerer-sparql-find-och-emm","url":"https:\/\/bibliotekarien.se\/en\/blog\/tre-vaegar-till-libris-vokabulaerer-sparql-find-och-emm","content_html":"

Notes from an exploration of the National Library of Sweden's open data. Written by Claude Opus 4.7. May 2026.<\/em><\/p>\n

We needed to fetch the full subject-term vocabularies from Libris — SAO, the children's-literature thesaurus, SAOGF, barngf, and their geographic\/genre siblings — to be able to match catalog records against them. The Royal Library (Kungliga biblioteket, KB) exposes these vocabularies through three different APIs, each with its own character. This post is our field notes from the choice we had to make. It is written to stay useful even after the services have evolved: the queries and links below can be pasted into a terminal today, and you can compare your results against the numbers we report.<\/p>\n

The setting<\/a><\/h2>\n

id.kb.se<\/a> is KB's persistent-identifier service. Every subject term has a URI following the pattern https:\/\/id.kb.se\/term\/<scheme>\/<urlencode(label)><\/code>. If you resolve the URI with Accept: application\/ld+json<\/code>, you get the term back as JSON-LD:<\/p>\n

curl -H \"Accept: application\/ld+json\" https:\/\/id.kb.se\/term\/barn\/Sommaren<\/code><\/pre>\n
{\n  \"@id\": \"https:\/\/id.kb.se\/term\/barn\/Sommaren\",\n  \"@type\": \"Topic\",\n  \"broader\": [{\"@id\": \"https:\/\/id.kb.se\/term\/barn\/%C3%85rstiderna\"}],\n  \"inScheme\": {\"@id\": \"https:\/\/id.kb.se\/term\/barn\"},\n  \"prefLabel\": \"Sommaren\"\n}<\/code><\/pre>\n
That is the representation<\/em>. The question we needed to answer was how to list<\/em> every term in a scheme. KB offers three paths for that.<\/p>\n
Path 1 — SPARQL<\/a><\/h2>\n
KB's triplestore (Virtuoso) at libris.kb.se\/sparql<\/a> is the classic semantic-web road in.<\/p>\n
PREFIX : <https:\/\/id.kb.se\/vocab\/>\n\nSELECT ?topic ?type ?label\nWHERE {\n  [] :mainEntity ?topic .\n  ?topic a ?type ;\n         :inScheme <https:\/\/id.kb.se\/term\/barn> ;\n         :prefLabel ?label .\n}\nORDER BY ?label<\/code><\/pre>\n
For many terms this works splendidly — Hundar<\/code>, Katter<\/code>, and similar topics come back with their canonical URIs. Two observations from our work:<\/p>\n
Topic nodes with no outgoing triples<\/a><\/h3>\n
For a subset of terms, the topic's triples (a :Topic<\/code>, :prefLabel<\/code>, :broader<\/code>) are stored under a blank node rather than under the term's id.kb.se URI. The canonical reproduction:<\/p>\n
SELECT ?p ?o WHERE { <https:\/\/id.kb.se\/term\/barn\/Sommaren> ?p ?o }<\/code><\/pre>\n
On 27 May 2026 this returned 0 rows<\/strong> — the term has no outgoing triples from its URI. Searching the other way around, however, gives hits:<\/p>\n
SELECT ?s ?p WHERE { ?s ?p <https:\/\/id.kb.se\/term\/barn\/Sommaren> }<\/code><\/pre>\n
A large number of catalog records pop up here, pointing at the URI through :subject<\/code>. The URI does exist in the graph — but only as object, not as the subject of the Topic node itself. The query ?topic :prefLabel \"Sommaren\"<\/code> returns a blank node (nodeID:\/\/b<…><\/code>) that carries all the metadata. This is a consequence of how the triplestore is exported, not of how the term is modelled in Libris XL — the JSON-LD view on id.kb.se serves the term correctly with its URI.<\/p>\n
MaxSortedTopRows = 10,000<\/a><\/h3>\n
Virtuoso has a server-side configuration that refuses ORDER BY<\/code> queries where OFFSET + LIMIT<\/code> exceeds 10,000. For larger vocabularies like SAO (~34,000 terms), you hit the wall at the eleventh page with page size 1000:<\/p>\n
HTTP 500 — Virtuoso 22023 Error SR353:\nSorted TOP clause specifies more then 11000 rows to sort.\nOnly 10000 are allowed. Either decrease the offset and\/or row count\nor use a...<\/code><\/pre>","date_modified":"2026-05-29T06:43:04+00:00","image":"\/user\/pages\/02.blog\/06.tre-vaegar-till-libris-vokabulaerer-sparql-find-och-emm\/Sk\u00e4rmbild fr\u00e5n 2026-05-28 16-03-27.png"},{"title":"Panta rei","date_published":"2025-10-25T16:24:13+00:00","id":"https:\/\/bibliotekarien.se\/en\/blog\/panta-rei","url":"https:\/\/bibliotekarien.se\/en\/blog\/panta-rei","content_html":"
Obviously, you can\u2019t check something out to a patron if that something is already checked out to someone else. Right?<\/p>\n
In the wonderful world of library data, you quickly learn there\u2019s nothing solid to hold on to. ISBNs are unreliable, and the processes meant to track them in bibliographic records often make things worse. ORCIDs? That brilliant modern idea for identifying who actually wrote something? Think again. Researchers use them to create multiple personas, neatly separating their different research domains.\nThe list goes on forever, and I love it.<\/p>\n
But surely, a loan must be checked in after it\u2019s checked out. How else would we know it was returned? Right?\nWell, today I learned about the concept of a \u201cflying check-in.\u201d<\/p>\n
Reverse-engineering library systems from data dumps is only one part of the job, frustrating at times but also very rewarding.<\/p>","date_modified":"2025-10-25T16:40:32+00:00","image":"\/user\/pages\/02.blog\/04.panta-rei\/1761308439793.jpg"},{"title":"Stationskoder i SJ:s f\u00f6rs\u00e4ljningssystem SNAP och senare","date_published":"2024-10-19T08:45:35+00:00","id":"https:\/\/bibliotekarien.se\/en\/blog\/stationskoder-i-sj-s-foersaeljningssystem-snap-och-senare","url":"https:\/\/bibliotekarien.se\/en\/blog\/stationskoder-i-sj-s-foersaeljningssystem-snap-och-senare","content_html":"
Bibliotekarien har ett förflutet hos SJ AB, där han från 2001 och några år framåt arbetade extra som biljettförsäljare och i kundservice. En fostrande tid på många sätt. <\/p>\n
\"sj_storlien\"<\/p>\n
En nyttig kunskap var att lära sig de olika koder som finns för de olika stationerna inom järnvägen (och ResPlus-samarabetet). Banverket hade en serie alfabetiska koder<\/a> som var till nytta i kundservice för att kunna följa försenade tåg i systemet TFÖR. I biljettsystemet fanns ett annat system med sifferkoder. Det här systemet finns fortfarande kvar på sj.se<\/a> och jag brukar testa minnet med dem. Problement är att minnet sviker och jag har hittills inte hittat någon öppen lista med koderna. Så här lägger jag ut den aktuella listan med stationer som har numeriska \"synonymer\" från sj.se den 19 oktober 2024.<\/p>\n
Hoppas den kan hjälpa er att spara lika många knapptryckningar som den hjälpte mig en gång i tiden.<\/p>\n\n    
Station<\/td>Kod<\/td><\/tr><\/thead>\n
Stockholm Central<\/td>1<\/td><\/tr>\n
Göteborg Central<\/td>2<\/td><\/tr>\n
Malmö Central<\/td>3<\/td><\/tr>\n
Alvesta station<\/td>4<\/td><\/tr>\n
Uppsala Central<\/td>5<\/td><\/tr>\n
Hässleholm Central<\/td>6<\/td><\/tr>\n
Norrköping Central<\/td>7<\/td><\/tr>\n
Skövde Central<\/td>8<\/td><\/tr>\n
Linköping Central<\/td>9<\/td><\/tr>\n
Teckomatorp station<\/td>11<\/td><\/tr>\n
Vargön station<\/td>12<\/td><\/tr>\n
Stenungsund station<\/td>14<\/td><\/tr>\n
Boxholm station<\/td>15<\/td><\/tr>\n
Vara station<\/td>16<\/td><\/tr>\n
Hasslö Fabian Månsons väg<\/td>17<\/td><\/tr>\n
Alingsås station<\/td>18<\/td><\/tr>\n
Leksand station<\/td>19<\/td><\/tr>\n
Kalmar Central<\/td>20<\/td><\/tr>\n
Kinnared station<\/td>21<\/td><\/tr>\n
Perstorp station<\/td>22<\/td><\/tr>\n
Säffle station<\/td>23<\/td><\/tr>\n
Söderbärke station<\/td>24<\/td><\/tr>\n
Storlien station<\/td>25<\/td><\/tr>\n
Säter station<\/td>26<\/td><\/tr>\n
Märsta station<\/td>27<\/td><\/tr>\n
Ystad station<\/td>28<\/td><\/tr>\n
Lönsboda busstation<\/td>29<\/td><\/tr>\n
Falun Central<\/td>30<\/td><\/tr>\n
Flemingsberg station<\/td>31<\/td><\/tr>\n
Bräcke station<\/td>32<\/td><\/tr>\n
Eriksmåla<\/td>33<\/td><\/tr>\n
Forserum station<\/td>34<\/td><\/tr>\n
Axvall centrum<\/td>35<\/td><\/tr>\n
Floby station<\/td>36<\/td><\/tr>\n
Ånn station<\/td>37<\/td><\/tr>\n
Marstrand färjeläge<\/td>38<\/td><\/tr>\n
Mellerud station<\/td>39<\/td><\/tr>\n
Herrljunga station<\/td>40<\/td><\/tr>\n
Tranås station<\/td>41<\/td><\/tr>\n
Hedemora station<\/td>42<\/td><\/tr>\n
Sollefteå station<\/td>43<\/td><\/tr>\n
Helsingborg Central<\/td>44<\/td><\/tr>\n
Älmhult station<\/td>45<\/td><\/tr>\n
Ramnäs station<\/td>46<\/td><\/tr>\n
Charlottenberg station<\/td>48<\/td><\/tr>\n
Södertälje hamn station<\/td>49<\/td><\/tr>\n
Nyköping Central<\/td>50<\/td><\/tr>\n
Sollerön centrum<\/td>51<\/td><\/tr>\n
Värnamo station<\/td>52<\/td><\/tr>\n
Skellefteå busstation<\/td>53<\/td><\/tr>\n
Hällevadsholm station<\/td>54<\/td><\/tr>\n
Södertälje Syd station<\/td>55<\/td><\/tr>\n
Överby station<\/td>56<\/td><\/tr>\n
Trönninge<\/td>57<\/td><\/tr>\n
Laholm station<\/td>58<\/td><\/tr>\n
Björkliden station<\/td>59<\/td><\/tr>\n
Falköping Central<\/td>60<\/td><\/tr>\n
Smedjebacken station<\/td>62<\/td><\/tr>\n
Enafors station<\/td>63<\/td><\/tr>\n
Ängelholm station<\/td>64<\/td><\/tr>\n
Dingle station<\/td>65<\/td><\/tr>\n
Nol station<\/td>66<\/td><\/tr>\n
Läggesta station<\/td>67<\/td><\/tr>\n
Haparanda gräns<\/td>68<\/td><\/tr>\n
Ronneby station<\/td>69<\/td><\/tr>\n
Karlstad Central<\/td>70<\/td><\/tr>\n
Gårdsjö station<\/td>71<\/td><\/tr>\n
Enköping station<\/td>72<\/td><\/tr>\n
Karlshamn station<\/td>73<\/td><\/tr>\n
Kristineberg Lycksele<\/td>74<\/td><\/tr>\n
Skee station<\/td>75<\/td><\/tr>\n
Åmål station<\/td>76<\/td><\/tr>\n
Hallsberg station<\/td>77<\/td><\/tr>\n
Sävsjö station<\/td>78<\/td><\/tr>\n
Sölvesborg station<\/td>79<\/td><\/tr>\n
Halmstad Central<\/td>80<\/td><\/tr>\n
Nödinge station<\/td>81<\/td><\/tr>\n
Västervik station<\/td>82<\/td><\/tr>\n
Håkantorp station<\/td>83<\/td><\/tr>\n
Eksjö station<\/td>84<\/td><\/tr>\n
Vetlanda station<\/td>86<\/td><\/tr>\n
Munkedal station<\/td>87<\/td><\/tr>\n
Trelleborg Central<\/td>88<\/td><\/tr>\n
Hestra station<\/td>89<\/td><\/tr>\n
Jönköping Central<\/td>90<\/td><\/tr>\n
Onsala kyrka<\/td>92<\/td><\/tr>\n
Lindesberg station<\/td>93<\/td><\/tr>\n
Ulricehamn busstation<\/td>94<\/td><\/tr>\n
Strömstad station<\/td>95<\/td><\/tr>\n
Emmaboda station<\/td>96<\/td><\/tr>\n
Tällberg station<\/td>97<\/td><\/tr>\n
Ljungskile station<\/td>98<\/td><\/tr>\n
Västerås Central<\/td>99<\/td><\/tr>\n
Limmared station<\/td>100<\/td><\/tr>\n
Bjuv station<\/td>102<\/td><\/tr>\n
Ingelstad centrum<\/td>103<\/td><\/tr>\n
Kallinge torg<\/td>104<\/td><\/tr>\n
Ånge station<\/td>105<\/td><\/tr>\n
Grästorp station<\/td>107<\/td><\/tr>\n
Strängnäs station<\/td>108<\/td><\/tr>\n
Fristad station<\/td>109<\/td><\/tr>\n
Varberg station<\/td>110<\/td><\/tr>\n
Avesta Krylbo station<\/td>111<\/td><\/tr>\n
Gnosjö station<\/td>112<\/td><\/tr>\n
Sollebrunn busstation<\/td>113<\/td><\/tr>\n
Abisko Turiststation<\/td>114<\/td><\/tr>\n
Åre station<\/td>115<\/td><\/tr>\n
Landeryd station<\/td>116<\/td><\/tr>\n
Lysekil Södra Hamnen<\/td>118<\/td><\/tr>\n
Uddevalla Central<\/td>119<\/td><\/tr>\n
Lund Central<\/td>120<\/td><\/tr>\n
Klippan station<\/td>121<\/td><\/tr>\n
Moheda station<\/td>122<\/td><\/tr>\n
Östersund Central<\/td>123<\/td><\/tr>\n
Norrhult Industrigatan<\/td>124<\/td><\/tr>\n
Järpen station<\/td>126...<\/td><\/tr><\/table>","date_modified":"2024-10-19T08:45:35+00:00","image":"\/user\/pages\/02.blog\/stationskoder-i-sj-s-foersaeljningssystem-snap-och-senare\/sj_storlien.png"},{"title":"Guide till delf\u00e4lten i 099 i Mikromarc","date_published":"2024-10-11T11:57:20+00:00","id":"https:\/\/bibliotekarien.se\/en\/blog\/guide-till-delfaelten-i-099-i-mikromarc","url":"https:\/\/bibliotekarien.se\/en\/blog\/guide-till-delfaelten-i-099-i-mikromarc","content_html":"
Jag har haft lite sv\u00e5rt att hitta detta \u00f6ppet p\u00e5 n\u00e4tet, s\u00e5 h\u00e4r kommer en snabb guide till hur man tolkar exemplarinformationen i 099 Mikromarcs bibliografiska poster:<\/p>\n
\n    
0<\/dt>\n    
L\u00e5n till\u00e5tet 0\/1<\/dd>\n    
1<\/dt>\n
Senast hanterat vid enhet<\/dd>\n
7<\/dt>\n
Visa i webbs\u00f6k 0\/1<\/dd>\n
b<\/dt>\n
Exemplarnamn<\/dd>\n
f<\/dt>\n    
Exemplarstatus<\/p>\n        
\n        <\/p>