In a blog post on bad code and technical debt Steve Freeman described how Chris Matts came up with the metaphor of an unhedged call option for bad code. This post is being intensively discussed on Reddit and on Hacker News recently. InfoQ interviewed Steve and Chris about using metaphors for bad code and code smells, trade-offs and costs of low quality code, and responsibilities for code quality.
Pour Jeremy Rifkin, « un nouveau système économique entre sur la scène mondiale : les communaux collaboratifs ». L'auteur, gourou de l'économie collaborative et consultant à succès, prédit ainsi « l'éclipse du capitalisme », du fait de l'émergence du digital et d'une nouvelle forme de l'économie, celle du partage.
“Big Data” systems continue to attract substantial funding, attention, and excitement. As with many new technologies, they are neither a panacea, nor even a good fit for many common uses. Yet they also hold great promise. The question is, can systems originally designed to serve hundreds of millions of requests for something like web pages also work for requests that are computationally expensive and have tight tolerances?
Pierre Boyer et Hubert Kempf Les activités bancaires se sont internationalisées dès le Moyen-Âge, lorsque les banquiers ont commencé à s’appuyer sur les réseaux de riches familles afin de déplacer des (...)...
Mike Barker shares lessons learned at LMAX Exchange: starting from a clean domain model is imperative and understanding the necessary trade-offs between performance and safety/generality/functionality.
Imagine having the opportunity to rebuild a complex, legacy-filled platform from the ground up, moving it from the desktop to the cloud in the process. Imagine being able to replace a complex upgrade model that mandated the use of separate source code branches for each customer with a single, cloud-based application. Sound like a challenge?
At 9:30 a.m. today, trading floors across the City of London erupted.
Outbursts of obscenities and confusion followed the Swiss central bank’s surprise decision to abolish its three-year-old policy of capping the Swiss franc against the euro, according to traders in London’s financial district. The U-turn sent the franc as much as 41 percent up against the euro, the biggest gain on record, a move that one trader estimated may cause billions of dollars of losses for banks and their customers.
High-frequency trading has transformed financial markets in recent years. We study the consequences of this development using a model with multiple trading venues, costly information acquisition, and several types of traders. An increase in trading speed crowds out information acquisition by reducing the gains from trading against mispriced quotes. Thus, faster speeds have two effects on traditional measures of market performance. First, the bid-ask spread declines, since there are fewer informational asymmetries. Second, price efficiency deteriorates, since less information is available to be incorporated into prices. A general tradeoff exists between low spreads and price efficiency. We characterize the frontier of this tradeoff and evaluate several trading mechanisms within this framework. The prevalent limit order book mechanism generally does not induce outcomes on this frontier. We consider two alternatives: first, a small delay added to the processing of all orders except cancellations, and second, frequent batch auctions. Both induce equilibrium outcomes on this frontier.
Blockchain technology's main innovation is an electronic public transaction record of integrity without central authority. Beside cryptocurrencies and distributed payment systems, blockchain applications could include areas of finance where a central, trusted third party has traditionally been used, trade reporting, depository receipts, escrow accounts or trade finance. Blockchains can contain set of documents, record assets and help to manage interconnected devices. Emerging applications, such as smart contracts and decentralised autonomous organisations, might in future also permit blockchains to act as automated agents.
Rainer Voss est le banquier d'affaires qui parle dans "Master of Universe", film qui raconte à travers son témoignage les dessous de la finance de marchés, la fameuse banque d'investissement qui s'est rendue célèbre aux cours des dernières années par de nombreux scandales.
J’ai eu la chance de le rencontrer lors de son passage à Paris et il m’a accordé cette interview. Son métier, les failles de ce système financier, de son mode de fonctionnement. J'ai voulu comprendre avec lui pourquoi et comment ce système avait connu des dérives. Quels étaient les ressorts des intervenants, comment pouvait-on aussi imaginer changer le système ?
Capital Markets Outlook 2015: Following a few years dominated by regulatory compliance and cost saving technology initiatives, financial organizations are finally investing in innovative technology and tools.
La forte demande des pays émergents et la hausse structurelle des coûts de production vont rendre certains métaux particulièrement stratégiques. Moins connus que le cuivre ou le nickel, ils n'en sont pas moins au cœur du nouveau tissu économique mondial.
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