India's economy has seen robust growth after Prime Minister Narendra Modi took office last May.India's financial authorities expect its GDP growth to exceed 8% this year after the country revised its GDP measurement.Prime Minister Modi's economic policies are believed to be strong drivers behind India's growth.These policies aim to provide a welcoming environment for investment, attract investment from other countries, create more job opportunities for people, and improve domestic infrastructure.India has also revealed the budget for fiscal year 2015.The budget pledges to cut corporate tax, spend more on modernising India's ageing roads and railways while keeping borrowing in check.So, how do economists assess India's economy?What is the focal point of future Cooperation and competition between China and India, the two largest emerging economies?