The dollar moved on a firm note mostly around ¥104.40 in Tokyo on Thursday before shedding some gains in late trading. At 5 p.m., the dollar stood at ¥104.28, up from ¥104.21 at the same time Wednesday. The euro was at $1.1735, down from $1.1770, and at ¥122.38, down from ¥122.66. The dollar slipped through ¥104.30 in late afternoon trading on selling prompted by the euro's slide against other major currencies "amid swelling concerns over the negative effects of the coronavirus resurgence on the European economy," a currency broker said. "But market sentiment was somewhat stabilized" by the Nikkei's rebound after a tumble in the morning and a rise in U.S. stock index futures on off-hours trading, the broker added.
The dollar was almost flat around ¥113.10 in Tokyo trading late Wednesday, after overcoming the early sluggishness thanks to Tokyo stocks' resilience. At 5 p.m., the dollar stood at ¥113.07, down from ¥113.10 at the same time Tuesday. The euro was at $1.1330, down from $1.1380, and at ¥128.13, down from ¥128.72. After falling below ¥112.70 in early trading, the dollar rebounded above ¥113 later in the morning due to purchases from domestic importers, with the benchmark 225-issue Nikkei stock average recouping some earlier losses. For most of afternoon trading, the greenback moved above ¥113, with the Nikkei continuing to show some resilience on its downside, traders said.
The dollar was firmer around ¥108.90 in Tokyo trading late Friday, after moving in a tight range amid a wait-and-see mood ahead of the weekend. At 5 p.m., the dollar stood at ¥108.93-94, up from ¥108.72-72 at the same time on Thursday. The euro was at $1.1446-1447, down from $1.1497-1497, and at ¥124.69-69, down from ¥125.03-03. After trading around ¥108.80-90 in early trading, the dollar rose above ¥108.90 The greenback dropped below ¥108.80 in midmorning trading, pressured by a drop in the Nikkei and weak readings of the Chinese manufacturing industry purchasing managers' index for January, traders said.
This paper details the development and evaluation of AstonTAC, an energy broker that successfully participated in the 2012 Power Trading Agent Competition (Power TAC). AstonTAC buys electrical energy from the wholesale market and sells it in the retail market. The main focus of the paper is on the broker's bidding strategy in the wholesale market. In particular, it employs Markov Decision Processes (MDP) to purchase energy at low prices in a day-ahead power wholesale market, and keeps energy supply and demand balanced. Moreover, we explain how the agent uses Non-Homogeneous Hidden Markov Model (NHHMM) to forecast energy demand and price. An evaluation and analysis of the 2012 Power TAC finals show that AstonTAC is the only agent that can buy energy at low price in the wholesale market and keep energy imbalance low.
The dollar was firmer above ¥110.40 in late Tokyo trading Wednesday after moving narrowly for much of the day due to a lack of fresh incentives. At 5 p.m., the dollar stood at ¥110.42-42, up from ¥110.22-30 at the same time Tuesday. The euro was at $1.1401-1402, against $1.1399-1405, and at ¥125.89-91, up from ¥125.67-67. The dollar rose above ¥110.60 in midmorning trading, following a strong opening of the benchmark Nikkei stock average and an upturn of U.S. index futures in off-hours trading, dealers said. "A larger-than-usual volume of dollar buying by Japanese importers" also supported the U.S. currency, a foreign currency broker said.