The rise and rise of Aldi: two decades that changed supermarket shopping in Australia
Bibliographic record
Abstract
Twenty years ago, on January 25 2001, a virtually unknown German supermarket chain quietly opened its first stores in Australia. The two stores – one in Sydney’s inner-west suburb of Marrickville, the other in the outer south-west, near Bankstown Airport – were small, about a quarter the size of a mainstream supermarket. Each stocked just 900 products, 90% of which were unknown brands. Shoppers had to bring and pack their own bags themselves. To use a trolley required a “gold coin”. They didn’t seek to entice customers with “loyalty” rewards or other gimmicks. Few Australian supermarket executives at the time would have considered them models for success. They couldn’t imagine the impact Aldi would have on Australia’s retail sector and shopping habits.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.005 | 0.004 |
| Scholarly communication | 0.006 | 0.004 |
| Open science | 0.001 | 0.005 |
| Research integrity | 0.002 | 0.005 |
| Insufficient payload (model declined to judge) | 0.007 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".