Using MFHD to Predict the Future

David J. Fiander

Publication Patterns

Published Monday – Saturday, except for Christmas Day. Issues are identified by date.

Published weekly on Thursday, except for a double issue in the last two weeks of December. Issues are numbered continuously and four volumes are published annually, starting in Jan, Apr, Jul, Oct.

Published bimonthly, except monthly in Jan, Jul, Aug, Dec. Issue numbers restart in each volume, which starts in Jan

Extreme Publication Patterns

Item is published every Monday and Thursday except for whenNew Years Day,the fourth of July,

Labour Day,(American) Thanksgiving,

and Christmasfall on a Monday or Thursday

863: Enumeration & Chronology(AKA Holdings Data)

$8: Linkage and sequence number $a - $f: Enumeration $i - $l: Chronology $w: Break indicator $x, $z: Nonpublic & public notes

863 41 $81.1$a1$b5$i1990$j05

853: Caption and Pattern 1: Caption

$8: Field link and sequence number $a - $f: Enumeration $u: “Bib. units per next higher level” $v: Numbering continuity $i - $l: Chronology

853 20 $81$av.$bno.$u12$vr$i(year)$j(month)

Formatting

853 20 $81$av.$bno.$u12$vr$i(year)$j(month)

863 41 $81.1$a3$b5$i1990$j05

863 41 $81.2$a3$b6$i1990$j06

863 41 $81.3$a3$b7$i1990$j07

863 41 $81.4$a3$b8$i1990$j08

v.3:no.5 (1990:May) – v.3:no.8 (1990:Aug)

853: Caption and Pattern 2: Pattern

$w: Frequency $x: Calendar change $y: Regularity pattern

853 20 $81$av.$bno.$u20$vr$i(year)$j(month)$ws$x01$ypd01,15$yod0115,0715,0815,1215

Patterns are Easy for People

Published monthly on the second Wednesday, except in April, when it's published on the second Thursday, and May, when it's published on the first Wednesday.

Patterns are Hard for Computers

$ypw02we # 2nd We

$ypw0402th,0501we # Apr: 2nd Th, May:1st We

$yow0402we,0502we# Not 2nd We in Apr, May

How do we calculate the date of the issue after 2009/03/11?

Challenges

Quirks in the Standard Bad data Poor interoperability between systems

Credits

“Grandmother Predictions” by Flickr user stevec77. http://www.flickr.com/photos/stevec77/2520256837/

CONSER Publication Patterns Initiative. http://www.loc.gov/acq/conser/patthold.html

Licence

Copyright © 2009, David J. Fiander

This work is licensed under the Creative Commons Attribution-Noncommercial 2.5 Canada License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc/2.5/ca/ or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.