% generated by tables/make_tables.py from ./results/bibliometrics/cagr_by_category.csv, ./results/econometrics/breaks.csv
\begin{table}[htbp]\centering\caption{The systems and infrastructure categories of Part VI: primary-category output, compound annual growth, and structural-change estimates of the monthly log-volume series.}\label{tab:systems_categories}
\begin{threeparttable}\small
\begin{tabular}{lrrrrrrrrr}
\toprule
\textbf{Category} & \textbf{n 2018} & \textbf{n 2022} & \textbf{n 2025} & \textbf{CAGR base} & \textbf{CAGR post} & \textbf{Slope ch.} & \textbf{p} & \textbf{Placebo p} & \textbf{BP breaks} \\
\midrule
Computer architecture & 6{,}518 & 7{,}587 & 6{,}736 & 0.039 & -0.093 & 0.016 & 0.000 & 0.062 & 2023-05-01 \\
Accelerators and AI hardware & 409 & 710 & 953 & 0.148 & 0.092 & 0.018 & 0.000 & 0.169 & 2024-11-01 \\
Operating systems & 778 & 541 & 681 & -0.087 & 0.078 & 0.016 & 0.000 & 0.477 & 2023-09-01 \\
Distributed computing & 3{,}839 & 4{,}689 & 4{,}183 & 0.051 & 0.132 & 0.020 & 0.000 & 0.077 & 2022-07-01;2024-07-01 \\
Cloud computing & 3{,}132 & 3{,}551 & 3{,}658 & 0.032 & -0.022 & 0.019 & 0.000 & 0.231 & 2022-11-01;2025-01-01 \\
Edge computing & 1{,}728 & 4{,}277 & 5{,}777 & 0.254 & 0.379 & 0.004 & 0.006 & 0.077 & 2025-01-01 \\
Computer networks & 19{,}581 & 16{,}380 & 29{,}777 & -0.044 & 0.312 & 0.009 & 0.000 & 0.200 & 2022-02-01 \\
Database systems & 5{,}421 & 6{,}812 & 8{,}340 & 0.059 & 0.073 & 0.014 & 0.000 & 0.092 & 2023-11-01 \\
Information retrieval & 4{,}031 & 5{,}621 & 8{,}689 & 0.087 & 0.176 & 0.023 & 0.000 & 0.092 & 2022-07-01;2024-07-01 \\
Quantum computing & 3{,}112 & 4{,}608 & 8{,}735 & 0.103 & 0.287 & 0.018 & 0.000 & 0.169 & 2022-01-01;2025-04-01 \\
Sustainable computing & 291 & 276 & 819 & -0.013 & 0.233 & 0.016 & 0.000 & 0.169 & 2022-07-01 \\
\bottomrule
\end{tabular}
\begin{tablenotes}\footnotesize\item Counts are eligible works whose primary category is the row category (multi-label memberships are larger). CAGR base: 2018 to 2022; CAGR post: 2023 to 2025 (complete years). Slope ch.: change in the monthly trend of the log-volume series at 2022-12 in the interrupted time-series model of Part IV, with its HAC p-value; Placebo p: share of placebo event dates whose slope statistic is at least as extreme; BP breaks: Bai--Perron break dates selected by BIC. 2026 is incomplete and excluded from the growth columns.\end{tablenotes}
\end{threeparttable}\end{table}