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Table 2 Matrix for assessing data quality of datasets as proposed in the ILCD Handbook in italic the sector-specific refinements/judgements, leading to the definition of DQI ranges
| Indi-cator | Subquality parameters | Rating | ||||
|---|---|---|---|---|---|---|
| 1 (Very good) | 2 (Good) | 3 (Fair) | 4 (Poor) | 5 (Very poor) | ||
| TeR | Expert judgement (technology mix (t.mix)) | modelled as the t.mix | very similar to the t.mix | similar to the t.mix | different to the t.mix | totally different to the t.mix or not assessed |
| GR | Expert judgement (share of referenced countries (r.c.)) | Fulfil totally the share of r.c. | Fulfil very similarly the share of r.c. | fulfil similarly the share of r.c. | Fulfil differ-rently the share of r.c | Fulfil completely different the share r.c. |
| TiR | Expert judgement (defined time (d.t.) on data inventory) | All the data sources refer to d.t. | The majority of the data sources refer to the d.t. | At least half of the data sources refer to the d.t. | Less than half of data sources refer to the d.t. | None the data sources refer to the d.t. |
| C | No. of impact categories weighted on% of elementary flows | 15-16 impact categories | 12-14 impact categories | 8-11 impact categories | 5-7 impact categories | ≤5 impact categories |
| P | Expert judgement precision/uncertainty (p/u) of data sources | Very low u. and/or very high p. | Low u. and/or high p. | Fair u. and/or fair p. | High u. and/or low p. | Very high u. and/or very low p. |
| M | expert judgement (system boundaries, multifunctionality and EoL) based on the situation (European Commission JRC, Institute for Environment and Sustainability 2010a), completion (C.) degree | all LCA stag-es, allocation procedures. C. in a very high degree | Most relevant LCA stages. allocation procedures. C. in a high degree | Sufficient LCA stages. allocation procedures. C. in a suffi-cient degree | Sufficient LCA stages. allocation procedures. C. in a low degree | Not sufficient LCA stages. No allocation procedures (multi-functionality not solved according to the situation) C. in a low degree |
