<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Igor Grachev — marketplace research</title><description>Research, frameworks, data, and essays on marketplace economics.</description><link>https://igorgrachev.ru/</link><item><title>AI in marketplace matching: a conceptual map and research plan</title><link>https://igorgrachev.ru/en/research/ai-matching-conceptual-map/</link><guid isPermaLink="true">https://igorgrachev.ru/en/research/ai-matching-conceptual-map/</guid><description>A map of the layers where AI shapes the allocation of supply and demand, separating what an algorithm can improve from what it cannot create.</description><pubDate>Sat, 25 Jul 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>Marketplace revenue architecture: from GMV to economic outcome</title><link>https://igorgrachev.ru/en/frameworks/marketplace-revenue-architecture/</link><guid isPermaLink="true">https://igorgrachev.ru/en/frameworks/marketplace-revenue-architecture/</guid><description>A framework connecting market activity, monetisation, execution reliability, and variable service cost without treating GMV as revenue.</description><pubDate>Thu, 06 Aug 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>How to segment a marketplace into micro-markets</title><link>https://igorgrachev.ru/en/frameworks/micro-market-segmentation/</link><guid isPermaLink="true">https://igorgrachev.ru/en/frameworks/micro-market-segmentation/</guid><description>A step-by-step framework for segmenting a marketplace by actual substitutability so aggregates do not hide local scarcity and saturation.</description><pubDate>Thu, 06 Aug 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>Seller activation: why registration is not activation</title><link>https://igorgrachev.ru/en/frameworks/seller-activation-diagnostic/</link><guid isPermaLink="true">https://igorgrachev.ru/en/frameworks/seller-activation-diagnostic/</guid><description>A diagnostic seller-activation framework covering the event chain from registration to eligible supply, first outcome, and repeat activity.</description><pubDate>Thu, 06 Aug 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>How public marketplaces define their own metrics</title><link>https://igorgrachev.ru/en/research/marketplace-metric-definitions/</link><guid isPermaLink="true">https://igorgrachev.ru/en/research/marketplace-metric-definitions/</guid><description>Fifteen metric definitions from the annual reports of seven public marketplaces: identical names describe different quantities.</description><pubDate>Sat, 25 Jul 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>State of Marketplace Liquidity: a research protocol</title><link>https://igorgrachev.ru/en/research/state-of-marketplace-liquidity-protocol/</link><guid isPermaLink="true">https://igorgrachev.ru/en/research/state-of-marketplace-liquidity-protocol/</guid><description>An open protocol for an annual study of marketplace liquidity: units of analysis, measures, data requirements, sensitivity tests, and non-claims.</description><pubDate>Thu, 23 Jul 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>Supply without Demand: a research protocol</title><link>https://igorgrachev.ru/en/research/supply-without-demand-protocol/</link><guid isPermaLink="true">https://igorgrachev.ru/en/research/supply-without-demand-protocol/</guid><description>A protocol for testing when additional supply may weaken matching, supplier economics, or the platform&apos;s system outcome.</description><pubDate>Thu, 23 Jul 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>Marketplace Liquidity Map</title><link>https://igorgrachev.ru/en/frameworks/marketplace-liquidity-map/</link><guid isPermaLink="true">https://igorgrachev.ru/en/frameworks/marketplace-liquidity-map/</guid><description>A working diagnostic map separating demand scarcity, unavailable supply, matching failures, and transaction-completion failures.</description><pubDate>Wed, 22 Jul 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>Supply is not liquidity</title><link>https://igorgrachev.ru/en/ideas/supply-is-not-liquidity/</link><guid isPermaLink="true">https://igorgrachev.ru/en/ideas/supply-is-not-liquidity/</guid><description>A working hypothesis explaining why supply volume alone does not describe a marketplace’s ability to produce successful matches.</description><pubDate>Wed, 22 Jul 2026 00:00:00 GMT</pubDate><language>en</language></item><item><title>Marketplace Health Index: a research protocol</title><link>https://igorgrachev.ru/en/research/marketplace-health-index-protocol/</link><guid isPermaLink="true">https://igorgrachev.ru/en/research/marketplace-health-index-protocol/</guid><description>A protocol for evaluating whether marketplace health can be summarised without arbitrary aggregation or false precision.</description><pubDate>Wed, 22 Jul 2026 00:00:00 GMT</pubDate><language>en</language></item></channel></rss>