Regularization adjusts the training objective, model architecture, or stopping process to curb fragile complexity and improve a model’s ability to generalize. Options include L1, L2, dropout, and early stopping. Tune their strength using validation data, and monitor fit and stability during training. Excessive regularization can erase genuine signal and lead to underfitting.
Trump lifted sanctions on Russian diesel exports and announced a Russia-Ukraine ceasefire covering energy infrastructure in an effort to lower U.S. diesel prices. Prices subsequently fell 0.5% on Monday. Russia pledged to supply more than 300,000 tonnes of diesel immediately, equivalent to about 2.25 million barrels—less than the U.S. transportation sector’s daily demand of about 2.94 million barrels. The availability of tankers and the condition of Russian refineries remain unclear. The Kremlin said Monday that ceasefire talks were still underway.
Amazon launched its 2027 new seller registration program in September 2026. Before opening a store, sellers should prepare registration documents and familiarize themselves with the review process, fees, and product compliance requirements. The announcement offers up to $550,000 in sales commission credits across multiple marketplaces, commission rates as low as 5% on some orders, savings of up to 24% on fulfillment fees, and advertising coupons worth up to $1,000. Eligibility requirements, deadlines, and applicable terms vary by offer.
India is supporting the rupee, which has fallen more than 7% against the U.S. dollar this year, through measures including channeling oil companies’ dollar demand, tightening hedging rules, and attracting capital inflows. The Reserve Bank of India has allowed three state-owned oil marketing companies to obtain dollars through a dedicated window starting October 12. It also requires a 20% foreign exchange risk reserve for derivative contracts hedging foreign currency demand in the current account, excluding transactions related to the capital account. The threshold for derivative transactions that do not require proof of underlying risk exposure has been lowered from $100 million to $5 million.