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如何决定“谁得到什么”
Xin Lang Cai Jing· 2026-01-09 16:41
Core Insights - The article emphasizes that market design is crucial for achieving effective matching in various sectors, particularly in education and other critical areas where price mechanisms alone are insufficient [8][10][16] Group 1: Market Design in Education - The traditional college admission process in China has evolved from a sequential preference system to a parallel preference system, which reduces the risk of high-scoring students being left out [5][6] - The efficiency of college admissions is not determined by tuition fees but rather by the design of the admission system, which can lead to various market failures if not properly structured [5][6][10] - The article draws parallels between college admissions and train ticket purchasing, illustrating how market design can improve fairness and efficiency in resource allocation [6][10] Group 2: Market Failures and Solutions - The article identifies four types of market failures: premature collapse, speed competition, congestion, and insecurity, which can hinder effective matching [9][10] - Nobel laureate Alvin E. Roth's work highlights that market failures often arise not from human greed but from flaws in market mechanisms, necessitating thoughtful design [8][9] - Roth's research suggests that economists should act as market designers, proposing practical solutions to improve market functionality [12][16] Group 3: Real-World Applications - The article discusses the matchmaking market in arranged marriages, noting its inefficiencies due to lack of depth, congestion, insecurity, and premature commitments [13][14] - The doctoral admission process in the U.S. is presented as a well-functioning market, yet it faces challenges such as "explosive offers" that disrupt established rules [14][15] - The need for continuous maintenance and adaptation of market designs is emphasized, as changing environments and technologies can lead to new challenges [15][16]
对话诺奖经济学家埃尔文·罗斯:除了拼价格,市场还能怎么运作?丨晚点周末
晚点LatePost· 2025-12-13 10:42
Core Insights - The article discusses the importance of better market mechanisms in various sectors, including education, employment, and organ donation, emphasizing that price is not the only effective signal for resource allocation [4][5][6]. Group 1: Market Mechanisms - Alvin E. Roth's research highlights that certain markets operate on "matching" rather than price mechanisms, such as school admissions, marriage, labor, and organ exchange markets [4][5]. - Roth's work on market design aims to improve the efficiency of these matching processes, demonstrating how they can significantly impact individuals' lives and societal functioning [5][6]. Group 2: Applications of Deferred Acceptance Algorithm - The "deferred acceptance algorithm" has been applied in various contexts, including China's college admission reforms, which allow students to fill out parallel choices after receiving their scores, reducing issues like "high scores but low admissions" [6][10]. - Roth's kidney exchange system has become a standard procedure in the U.S., directly saving lives by facilitating organ matches without monetary transactions [6][18]. Group 3: Global Trends in Organ Exchange - There is a growing trend towards cross-border kidney exchanges, which is particularly beneficial for countries with limited organ donation numbers [19][20]. - China has made significant changes in organ transplantation practices, moving towards voluntary organ donation, although kidney exchange systems are still not fully implemented [19][20]. Group 4: Market Design and Social Issues - Roth emphasizes that completely banning markets often leads to inefficiencies and black markets, suggesting that well-designed mechanisms are necessary to meet societal needs [23][24]. - The article discusses the challenges of human migration and the need for better market mechanisms to address the complexities of refugee movements and internal migration [29][30]. Group 5: Future of Market Design - Roth's perspective on market design has evolved to focus on "marketplace design," which considers the micro-units within larger markets, aiming to optimize their operations [30][31]. - The article concludes with Roth's belief that understanding and improving market mechanisms can lead to better societal outcomes, particularly in education and healthcare [31].
诺奖得主的市场设计课
3 6 Ke· 2025-12-09 02:51
Group 1 - The article discusses the concept of market design and its failures, illustrating how individuals who follow the rules can end up as losers in a poorly designed market [1][2] - It highlights the term "Sooners," referring to those who break the rules to gain an advantage, which has historical significance in Oklahoma [1] - The narrative emphasizes that market failures can lead to chaotic outcomes, where rule-followers are often disadvantaged [1][2] Group 2 - The article introduces the work of Nobel laureate Alvin Roth, who focuses on "matching markets" where both parties must mutually choose each other, such as in college admissions and organ transplants [4][5] - Roth's research aims to design rules that allow participants to express their true preferences, leading to optimal matching outcomes [4][5] - The concept of market design is applicable in various sectors, including education, healthcare, and job recruitment, where mutual selection is essential [4][5] Group 3 - Roth identifies four typical patterns of market failure that entrepreneurs should be aware of, which he refers to as a "business model death guide" [6][7] - The first failure is "jumping the gun," where early movers disrupt the market, leading to a situation where honest participants suffer [7][10] - The second failure is "speeding," where competition based on speed leads to resource wastage without creating social value [12][19] Group 4 - The third failure is "congestion," where a complex system can lead to bottlenecks, preventing successful transactions from occurring [21][27] - The fourth failure is "insecurity," where a lack of trust prevents transactions from happening, highlighting the importance of a reliable feedback system [28][33] - Roth emphasizes that these failures stem from poor market design rather than moral issues, suggesting that effective design can mitigate these problems [34][35] Group 5 - Roth's successful kidney exchange system exemplifies effective market design, allowing incompatible donors to facilitate successful transplants through a chain donation process [37][38] - This system addresses the challenges of matching markets by ensuring sufficient participation, optimizing algorithms, and maintaining safety [37][38] - The article concludes that market design is crucial for creating value in situations where traditional price mechanisms fail, such as in sharing economies and carbon trading [38][39]
匹配理论:经世致用的典型示范丨书评
Core Viewpoint - The book "Matching" by Alvin E. Roth emphasizes the importance of matching mechanisms in various public policy areas, challenging the traditional notion that market prices solely determine resource allocation [1][2]. Group 1: Matching Mechanisms - Roth highlights that matching requires a structured environment with application and selection processes to align the preferences and choices of all parties involved [2]. - The book illustrates that in fields like education and healthcare, resource allocation is not primarily driven by price, necessitating the design of fair and reasonable algorithms for matching [2][6]. Group 2: Practical Applications - Roth's research has practical implications, as seen in the optimization of the National Resident Matching Program in the mid-1990s and the improvement of the New York City high school choice system in 2003, which significantly reduced mismatches and increased student participation [4]. - Successful trading platforms must ensure a large number of willing participants to facilitate optimal matches, while also addressing potential congestion in the market through effective design [4]. Group 3: Market Design vs. Government Intervention - Market design establishes rules and frameworks for participants to engage in matching without directly influencing transactions or pricing, particularly in areas where price mechanisms fail [6]. - Government intervention plays a necessary role in addressing market failures, such as monopolies and externalities, but does not negate the importance of market design in optimizing matching processes [6]. Group 4: Implications for Public Policy - The book aims to answer the question of "who gets what and why," providing insights into the logic of resource allocation that can aid policymakers in optimizing mechanisms to enhance matching efficiency and resource utilization [7].
好书推荐·赠书 |《匹配》《深层次改革》
清华金融评论· 2025-11-14 09:09
Group 1 - The core viewpoint of the article emphasizes the importance of understanding the underlying rules and mechanisms in resource allocation, as highlighted by Nobel laureate Alvin E. Roth in his book "Matching" [3][4][5] - Roth's work illustrates that resource distribution is not solely determined by price but also by a comprehensive set of rules and institutions, which can transform passive participants into informed players [4][5] - The book serves as a guide to understanding the hidden rules that govern various aspects of life, from education to job selection, and encourages readers to recognize and seize genuine opportunities [4][5] Group 2 - The article introduces another book titled "Deep Reforms" by Yin Yanlin, which focuses on the deep-seated issues within China's economic system and proposes reform directions [8][9] - The book is structured into four parts, addressing the meaning of deep reforms, analyzing current economic challenges, suggesting specific reform directions, and providing recommendations for ensuring the smooth implementation of reforms [8][9] - Yin Yanlin's expertise in macroeconomic policy and economic system reform is highlighted, showcasing his influence in both policy-making and academic circles [9]
日常生活中的市场设计|《财经》书摘
Sou Hu Cai Jing· 2025-11-11 13:38
Core Insights - The article discusses the pervasive nature of market design in everyday life, illustrating how even simple choices, like breakfast, are influenced by complex market operations [2][3] - It highlights the transformation of markets from traditional matching systems to standardized commodity markets, using wheat and coffee as primary examples [4][6] Market Transformation - The Chicago Mercantile Exchange established a standardized grading system for wheat, allowing for anonymous and efficient trading, which eliminated the need for buyers to know the seller's identity [4][5] - The transition from a matching market to a commodity market increases market "thickness," enabling any buyer to purchase from any seller, thus enhancing efficiency [5] Coffee Market Evolution - The establishment of the Ethiopian Commodity Exchange in 2008 introduced an anonymous coffee grading system, allowing buyers to purchase coffee without knowing the supplier's identity [6][7] - The grading system incentivizes coffee farmers to harvest only ripe cherries, improving the overall quality of coffee available in the market [7] Market Dynamics - There exists a tension between commoditization and product differentiation, where sellers aim to attract buyers in a thick market while also wanting their products to stand out [8][9] - The article illustrates that while consumers may prefer standardized products for convenience, they also appreciate unique offerings that require more effort to find [9][10] Local Market Appeal - Farmers' markets are presented as a blend of matching and commodity markets, where buyers can connect with local sellers, enhancing the shopping experience [10]
【有本好书送给你】诺奖得主聊“匹配”:择校、肾脏移植…社会资源的分配,从来不是“价高者得”
重阳投资· 2025-10-22 07:33
Core Viewpoint - The article emphasizes the importance of understanding "matching mechanisms" in various markets, highlighting that resource allocation is not solely determined by price but also by a set of rules and systems that govern interactions in society [24][25]. Summary by Sections Introduction to Reading and Learning - The article begins with a quote from Charlie Munger, stressing that wisdom cannot be achieved without reading, and encourages continuous reading as a path to growth [2][3]. Book Recommendation - The featured book is "Matching: Who Gets What and Why" by Alvin E. Roth, which explores the concept of matching mechanisms in various sectors such as education, healthcare, and employment [8][9]. Market Design and Matching Mechanisms - The article discusses how traditional markets often fail to operate efficiently due to the absence of price mechanisms, leading to mismatches in resource allocation [10][24]. - It provides examples from education, such as college admissions and high school placements, illustrating how complex systems can lead to chaos and inefficiency [10][18]. Case Studies in Market Design - The article highlights successful market design examples, particularly in kidney transplantation, where a matching system has been implemented to allocate scarce resources effectively [20][21]. - It explains how the kidney exchange program operates, creating a larger pool of donors and recipients, thus increasing the chances of successful matches [23]. Conclusion on Market Mechanisms - The article concludes that understanding and designing effective matching mechanisms can lead to fairer and more efficient resource distribution, emphasizing that markets are not naturally occurring but are designed [24][25].