dchud

Learning Opportunity: MARC 264 Field and Rust Patterns

A mini-session exploring MARC cataloging concepts, code design decisions, and Rust syntax while working on mrrc — a Rust/Python MARC record library.

Context: We had just implemented a fix for publisher() and related methods to check MARC field 264 (RDA cataloging) as a fallback when field 260 is absent (PR #27).

This session was facilitated using Cat Hicks' learning-opportunities skill for Claude Code.

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dchud

#!/usr/bin/env python

"""
Simple tool to fetch follower lists every n seconds and store them
with time-based filenames.  Can be later merged, deduped, and fed to
users/lookup method to extract full user info.
"""

import argparse
import datetime

dchud

Keybase proof

I hereby claim:

• I am dchud on github.
• I am dchud (https://keybase.io/dchud) on keybase.
• I have a public key ASCMTFzlMORcg1rB4eJb0Pb2JvL15aBDlpFvkJ10gHD8swo

To claim this, I am signing this object:

dchud

{
  "field_names": ["estab_name", "site_address", "site_city", "site_state",
        "site_zip", "nr_in_estab", "owner_type"],
  "field_definitions": [{"field": "estab_name", "type": "String"},
                        {"field": "site_address", "type": "Address"},
                        {"field": "site_city", "type": "ShortString",
                         "Has Missing": true},
                        {"field": "site_state", "type": "ShortString",
                         "Has Missing": true},
                        {"field": "site_zip", "type": "ShortString",

dchud

This describes installing a virtual machine configured for use in a data warehousing 
for analytics course.  Students will be working with Jupyter notebooks (Python, R, Spark),
the unix (ubuntu-14.04) command line, MySQL, Spyder, PostgreSQL, and a few other things 
as they come up.

The box contains a lot of stuff, and is rather big compared to a standard Ubuntu ISO, say.
You will need at least 3Gb free on your host machine to download it, and probably at least
double that to run it.  Because the download file is big, you will want to be on a network
with a fat pipe.

dchud

What makes the Anscombe's Quartet of datasets useful, as wikipedia explains, is their near-equivalent summary stats: the x and y sets share the same mean, sample variance, correlation and simple linear regression model. It's instructive as a clear example of what to watch out for when developing simple linear regressions, and the issues each dataset highlights come clear in the different diagnostic plots.

The animation allows visual tracking of each data point through the

dchud

[["2014-09-22 22:00:00Z", 119], ["2014-09-22 09:00:00Z", 120], ["2014-09-22 03:00:00Z", 120], ["2014-09-22 08:00:00Z", 120], ["2014-09-22 21:00:00Z", 120], ["2014-09-22 14:00:00Z", 120], ["2014-09-22 06:00:00Z", 120], ["2014-09-22 18:00:00Z", 120], ["2014-09-22 01:00:00Z", 120], ["2014-09-22 00:00:00Z", 120], ["2014-09-22 02:00:00Z", 120], ["2014-09-22 10:00:00Z", 119], ["2014-09-22 11:00:00Z", 120], ["2014-09-22 12:00:00Z", 120], ["2014-09-22 16:00:00Z", 119], ["2014-09-22 20:00:00Z", 120], ["2014-09-22 07:00:00Z", 120], ["2014-09-22 17:00:00Z", 118], ["2014-09-22 15:00:00Z", 120], ["2014-09-22 04:00:00Z", 120], ["2014-09-22 05:00:00Z", 120], ["2014-09-22 23:00:00Z", 120], ["2014-09-22 13:00:00Z", 120], ["2014-09-22 19:00:00Z", 120], ["2014-09-09 22:00:00Z", 119], ["2014-09-09 09:00:00Z", 120], ["2014-09-09 03:00:00Z", 120], ["2014-09-09 08:00:00Z", 120], ["2014-09-09 21:00:00Z", 120], ["2014-09-09 14:00:00Z", 120], ["2014-09-09 06:00:00Z", 120], ["2014-09-09 18:00:00Z", 120], ["2014-09-09 01:00:00Z", 120], 

dchud

# dchud's 20 minute guide to installing DSpace 4.0 from the binary release
# on a clean ubuntu 12.04 server running on aws ec2 or where-have-you
# 
# this guide assumes you are already comfortable with *nix system administration
#
# this guide leaves out anything to do with the many details of configuring
# DSpace itself; it just gets you to the "it's up and running" step
#
# to start:  get your clean ubuntu-12.04 system up to date
$ sudo apt-get update && sudo apt-get upgrade

dchud

1sbn
alecso
alexandriava.gov
alibris_id
almedina
amazon
amazon_asin#
amazon.ca_asin
amazon.co.uk_asin
amazon.de

dchud

$ sudo apt-get update
$ sudo apt-get install default-jre
$ java -version
    java version "1.6.0_27"

download archivesspace-1.0.0RC1.tar.gz from archivespace

$ gunzip archivesspace-1.0.0RC1.tar.gz

$ tar -xf archivesspace-1.0.0RC1.tar