ES·EN
Monaco Data Observatory · SECP Methodology
Empirical Opportunity Register · Reviewed
Methodological control system used to determine when a category of the Soft Exclusion Coding Protocol (SECP) can be assessed in an empirically relevant manner.
The analysis does not assume that all twelve mechanisms can be observed in every space. Each combination of spatial case and SECP category is first classified according to whether an adequate documentary basis is available for its assessment.
Opportunity ≠ Occurrence. A category being classified as Opportunity = YES means that it can be assessed in that case. It does not mean that the mechanism has been confirmed.
Methodological Principle
Absence of Observation ≠ Absence of Mechanism
A central challenge in observational analysis is distinguishing between the empirical absence of a mechanism and the absence of an adequate opportunity to assess it.
The Observation Opportunities system introduces this distinction before SECP rates are calculated. Accordingly, a category enters the normalized denominator only when the case documentation provides a specific basis for assessing it.
The lack of an opportunity is not converted into a zero score or a confirmed absence of the mechanism. Likewise, the availability of an opportunity does not itself constitute evidence of presence.
Dataset Context
Opportunity Universe
The definitive corpus comprises 75 spatial cases, 225 visual assets and 12 SECP categories. The opportunity structure is based on the 900 combinaciones Case × Category resulting from 75 × 12.
Opportunity Classification
YES · UNCERTAIN · NO
The 900 combinations are classified according to the existence and specificity of the available documentary basis for assessing each category within each case.
A specific documentary basis is available to assess the category directly in that case.
These combinations form the normalization denominator.
YES does not imply confirmed presence.
The spatial context provides a potential basis for assessing the category, but no specifically identified evidence is available to include it in the YES denominator.
These combinations remain outside the main denominator.
The final case design does not provide a specific and relevant observational basis for assessing that category.
NO does not mean that the mechanism is empirically absent either.
Normalization Rule
Building the SECP Denominator
The denominator for each category does not automatically correspond to all 75 cases. It is constructed solely from cases classified and reviewed as Opportunity = YES.
Normalized SECP Rate
YES cases with confirmed presence
÷
reviewed YES cases
The UNCERTAIN and NO combinations are excluded from the denominator. Normalization is performed independently for each of the twelve categories.
Category-Specific Denominators
Observable Opportunities by SECP Category
Each category has a different opportunity structure. The table reproduces the definitive classification of the 900 combinations in the empirical register.
| SECP | Category | YES | UNCERTAIN | NO |
|---|---|---|---|---|
| SE1 | Physical and Architectural Deterrence | 26 | 34 | 15 |
| SE2 | Route Steering and Circulation Control | 28 | 31 | 16 |
| SE3 | Furniture and Resting Restrictions | 12 | 6 | 57 |
| SE4 | Visual and Symbolic Signalling | 25 | 35 | 15 |
| SE5 | Signage and Informational Filtering | 16 | 0 | 59 |
| SE6 | Economic Conditionality | 10 | 0 | 65 |
| SE7 | Normative and Behavioural Filtering | 12 | 16 | 47 |
| SE8 | Surveillance and Security Presence | 7 | 4 | 64 |
| SE9 | Staff-Mediated Interactional Filtering | 16 | 7 | 52 |
| SE10 | Temporal Exclusion | 12 | 0 | 63 |
| SE11 | Spatial Ambiguity and Discreet Access | 9 | 49 | 17 |
| SE12 | Temporary Privatisation and Event Transformation | 7 | 1 | 67 |
Case-Level Example
Place du Casino · VAM-MC-001
This case illustrates why opportunity classification and empirical confirmation must be kept separate. The twelve categories were first assessed for the existence of a relevant observational basis.
Opportunity = YES
7 categories
SE4 · SE5 · SE7 · SE8 · SE9 · SE10 · SE12
UNCERTAIN
3 categories
SE2 · SE3 · SE11
Opportunity = NO
2 categories
SE1 · SE6
Empirical Review of the YES Opportunities
The seven YES opportunities were reviewed. Presence of the mechanism was confirmed for SE4, SE5, SE7, SE8 and SE9. By contrast, SE10 and SE12 were empirically assessable categories, but their presence was not confirmed in the final register.
Observation Bias
Reducing Opportunity-Structure Bias
Without an explicit opportunity structure, a category assessable in only a few contexts could appear artificially infrequent. Conversely, a category applicable to numerous cases would simply have more opportunities to be detected.
Opportunity-based normalization allows descriptive comparisons between categories with different observational bases and prevents situations in which a mechanism could not be adequately assessed from being treated as empirical absences.
This procedure does not eliminate all potential observational biases, but it makes one of their main sources explicit: the unequal observability of mechanisms within the corpus.
Uncertainty
UNCERTAIN as Methodological Information
UNCERTAIN does not represent an intermediate category between presence and absence.
It indicates that the setting provides a potential basis for assessing the mechanism, but the final documentary design does not provide specifically identified evidence that would justify inclusion in the YES denominator.
Keeping these combinations distinct preserves information about the limits of observability within the corpus without artificially turning them into negative findings.
Opportunity-Based SECP
From Denominator to Empirical Result
Once the YES opportunities have been established and reviewed, empirical decisions distinguish between confirmed presence and absence of confirmation within the set that can actually be assessed.
The final register contains 180 reviewed YES assessments and 121 confirmed occurrences. Category-specific rates are published in SECP Data.
Research Documentation
SECP Methodological Context
The opportunity structure is part of the Soft Exclusion Coding Protocol and must be interpreted alongside the taxonomy, observation and coding method, and empirical validation.
SECP Overview
General architecture, scientific purpose and relationship with VAM.
Observation & Coding Method
Units of analysis, evidence, M1–M8 and decision rules.
Empirical Validation
Empirical validation, methodological controls and final results.
Research Materials
Methodological resources and documentation associated with the protocol.
Research Connections