Infinite-Sum Modeling
EconMOD —— Economic Quant Analysis PlatformBrexit: a fracture in economic integration?Global dynamic CGE training (201812)

EconMOD —— Economic Quant Analysis Platform

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Welcome to Infinite-Sum Modeling

Welcome to Infinite-Sum Modeling

Our work covers policy simulation platforms, economic modeling, quantitative investment strategy, database development, and related advisory. Typical domains include international trade, energy and the environment, natural disasters, labor markets, poverty, public finance, and sector policy.

Clients include government agencies, industry associations, leading firms, and research groups. Engagements range from macroeconomic analysis and forecasting to climate economics, trade, and business and investment strategy.

Data, software, and platforms

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  • EconMOD —— Economic Quant Analysis Platform

    2026-09-13

    EconMOD —— Economic Quant Analysis Platform

    Policy scenarios and trade shocks shouldn't be held hostage by local toolchains, hand-maintained directories, and scripts that can't be reproduced. EconMOD folds regional/sectoral aggregation, closure and shock specification, and general-equilibrium solving into a single auditable, collaborative server-side workflow. Why it matters In applied CGE / GTAP work, the real bottleneck is rarely "we can't write the equations" — it's: Dimension governance — from the global base data to an interpretable region-by-sector mapping, every step has to be checkable; Scenario engineering — closures (Book / Short / Long / Self) and shock variables must be aligned before submission, not guessed at after the solve fails; Compute and collaboration — the heavy lifting should queue and run on a server, with results deposited in structured form, not scattered across personal disks as intermediate files; Numerical credibility — key gates (aggregation accuracy, reference-scenario welfare EV, etc.) must be repeatedly verifiable by the team. EconMOD is built for exactly this chain — not another dashboard, but a runnable modeling workbench.

  • GTAP 10 global economic database

    2019-08-02

    GTAP 10 global economic database

    GTAP v10 covers 121 countries and 20 composite regions, with base years 2004, 2007, 2011, and 2014, and expands the sectoral classification from 57 to 65. ISM is a China agent for GTAP data; orders can include CGE and GTAP training materials.

  • Free online videos on global CGE models

    2019-05-02

    Free online videos on global CGE models

    From 28 April 2019, the quantitative economics platform (www.econmod.cn) opens global CGE training videos to all free registered members.

  • GEMPACK modeling software

    2018-10-06

    GEMPACK modeling software

    GEMPACK is specialist software for economic modeling, especially CGE models, used in more than 400 organisations in over 90 countries. ISM is a regional official agent for the CoPS software.

  • Global forestry model database

    2018-08-31

    Global forestry model database

    Partial-equilibrium models have long included forestry, but global general-equilibrium models with detailed forestry accounts remain scarce. We constructed a global GE database with a disaggregated forestry sector.

Selected research

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  1. 1.

    Trade

    Brexit: a fracture in economic integration?

    The protracted exit path after the referendum, and the implications of broken integration under the November 2018 draft agreement. A companion note examines how unilateral liberalisation after exit might offset part of the loss.

  2. 2.

    Regional

    Greater Bay Area notes

    A five-note series on the Pearl River Delta’s transition, the distance to a world-class city-region, innovative growth, urban competition and knowledge spillovers, and the econometrics of housing prices.

  3. 3.

    Trade

    A quantitative account of the US–China trade war

    Four scenarios follow the stages of policy. Both economies lose; most Chinese industries are hit, with some import-substitution gains; trade is diverted toward Europe and Belt and Road economies.

  4. 4.

    Trade

    Escalating US–EU trade tensions

    A global CGE simulation of a further round of US–EU trade measures, tracing regional and sectoral effects, with a cautious note on capital-market implications.

  5. 5.

    Energy

    Notes on energy reform

    Three notes on gas reform, coal capacity withdrawal, and the CGE implications of a higher world oil price for China’s macroeconomy and industries.