You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
"finding": "The systematic upward entropy drift under geometric-mean decimation is a second-order Jensen correction \u2014 the Hessian footprint of Shannon entropy on the simplex",
5
+
"mechanism": {
6
+
"step_1": "Geometric mean reduces composition variance (pulls toward Fr\u00e9chet mean x*)",
7
+
"step_2": "Shannon entropy is concave (Hessian = diag(-1/x_i))",
8
+
"step_3": "Concave function of less-variable input gives higher expected output (Jensen)",
"reason": "VAR(1) captures first-order (mean shift) which vanishes. Actual effect is second-order (variance \u00d7 Hessian) which is tiny."
30
+
},
31
+
"midrange_direction_check": {
32
+
"upward_as_predicted": [
33
+
"Germany",
34
+
"Japan",
35
+
"USA"
36
+
],
37
+
"downward_anomalous": [
38
+
"France",
39
+
"UK",
40
+
"Poland"
41
+
],
42
+
"explanation": "Downward cases have non-stationarity or small samples where first-order trend effects dominate the second-order Jensen term"
43
+
},
44
+
"codawork_language": "The residual is not error. It is the Hessian of entropy, made visible by the variance reduction that the geometric mean performs.",
"title": "Aitchison Variance Conservation Test \u2014 Time Transformer DUT",
3
+
"title": "Decimation Ladder — Three Conservation Candidates Tested",
4
4
"date": "2026-04-08",
5
+
"revision_note": "Revised after ChatGPT review. Original version incorrectly labeled Aitchison variance as APPROXIMATELY_CONSERVED. Reframed: AitVar is a NEGATIVE CONTROL. Shannon entropy is the conserved quantity. This file documents the experiment that led to the EITT discovery.",
5
6
"data_source": "EMBER European wholesale electricity price data (daily)",
6
7
"carriers": [
7
8
"Germany",
@@ -68,35 +69,24 @@
68
69
},
69
70
"conservation_analysis": {
70
71
"aitchison_variance": {
71
-
"Daily": {
72
-
"ratio_to_daily": 1.0,
73
-
"pct_change": 0.0,
74
-
"conservation_status": "STRONG"
75
-
},
76
-
"Weekly": {
77
-
"ratio_to_daily": 0.7607,
78
-
"pct_change": -23.9,
79
-
"conservation_status": "WEAK"
80
-
},
81
-
"Monthly": {
82
-
"ratio_to_daily": 0.6232,
83
-
"pct_change": -37.7,
84
-
"conservation_status": "WEAK"
85
-
},
86
-
"Quarterly": {
87
-
"ratio_to_daily": 0.5391,
88
-
"pct_change": -46.1,
89
-
"conservation_status": "WEAK"
90
-
},
91
-
"Annual": {
92
-
"ratio_to_daily": 0.4495,
93
-
"pct_change": -55.1,
94
-
"conservation_status": "NOT CONSERVED"
95
-
}
72
+
"daily_to_annual_change": "-55.1%",
73
+
"cv_across_resolutions": 0.2852,
74
+
"verdict": "NOT_CONSERVED",
75
+
"note": "AitVar drops monotonically with decimation. This is expected: geometric-mean averaging smooths trajectory dispersion. AitVar measures geometric spread, which is resolution-dependent."
96
76
},
97
-
"cv_across_resolutions": 0.2852,
98
-
"verdict": "APPROXIMATELY_CONSERVED",
99
-
"significance_for_codawork": "Aitchison variance is the native CoDa dispersion measure. Its conservation under decimation means the time transformer preserves the fundamental geometric structure of the simplex across resolutions."
77
+
"tv_integral": {
78
+
"daily_to_annual_change": "-99.7%",
79
+
"verdict": "NOT_CONSERVED",
80
+
"note": "TV integral collapses under decimation. Expected: fewer observations means fewer transitions."
81
+
},
82
+
"shannon_entropy": {
83
+
"daily_value": 2.069863,
84
+
"annual_value": 2.073492,
85
+
"daily_to_annual_change": "+0.18%",
86
+
"verdict": "NEAR_INVARIANT",
87
+
"note": "Shannon entropy is empirically stable across 341:1 compression. This is the EITT finding. See EITT_FINDING.md and EITT_Midrange_Confirmation_001.json for independent confirmation."
88
+
},
89
+
"summary": "Of three conservation candidates, only Shannon entropy survives decimation. Aitchison variance and TV integral are negative controls — they demonstrate that the geometric mean DOES change trajectory properties, making entropy's stability the surprising result."
"Aitchison variance MODERATELY CONSERVED across resolutions (CV = 0.2852)",
231
-
"Spectral independence IMPROVES at Quarterly resolution (mean |r| = 0.850 vs daily 0.867)",
232
-
"TIME TRANSFORMER has its conserved quantity: Aitchison variance survives decimation via geometric-mean anti-aliasing. The winding ratio is mathematically grounded.",
233
-
"TV integral is NOT conserved (daily/annual ratio = 315.5x). This confirms TV is resolution-dependent as expected."
165
+
"Aitchison variance is NOT conserved under decimation (drops 55% daily→annual). It is a negative control.",
166
+
"TV integral is NOT conserved (drops 99.7%). Also a negative control.",
167
+
"Shannon entropy IS near-invariant (+0.18% across 341:1 compression). This is the EITT finding.",
168
+
"The geometric mean smooths trajectory dispersion (AitVar, TV) while preserving compositional information content (entropy).",
169
+
"Spectral independence does not hold on this dataset at any resolution — diagnostics are correlated (mean |r| > 0.85)."
234
170
],
235
171
"time_transformer_status": {
236
-
"conserved_quantity": "Aitchison variance",
172
+
"conserved_quantity": "Shannon entropy (not Aitchison variance as originally hypothesized)",
0 commit comments