By ZVENIA Mining: in mining, and especially in reserve calculation, we are always confronted with the challenge of accurately forecasting costs. Proper estimation of these costs is crucial to ensuring the feasibility and profitability of projects, as any deviation can significantly impact decision-making and long-term planning. Article by Bojan Radojicic: ๐—ง๐—ฅ๐—˜๐—ก๐—— ๐—”๐—ก๐—”๐—Ÿ๐—ฌ๐—ฆ๐—œ๐—ฆ Involves examining historical data to identify patterns or trends over time. Simple, cost-effective, but may not account for unexpected changes. ๐—ง๐—œ๐— ๐—˜ ๐—ฆ๐—˜๐—ฅ๐—œ๐—˜๐—ฆ ๐—”๐—ก๐—”๐—Ÿ๐—ฌ๐—ฆ๐—œ๐—ฆ Analyzing a sequence of data at specific time intervals. The primary goal is to identify one-offs, seasonal variations, and cycles to forecast future values. ๐—ฆ๐—˜๐—”๐—ฆ๐—ข๐—ก๐—”๐—Ÿ ๐——๐—˜๐—–๐—ข๐— ๐—ฃ๐—ข๐—ฆ๐—œ๐—ง๐—œ๐—ข๐—ก Breaks down time series data into seasonal, trend, and residual components. Suitable for data with strong seasonal patterns. ๐—˜๐—ซ๐—ฃ๐—˜๐—ฅ๐—ง ๐—๐—จ๐——๐—š๐— ๐—˜๐—ก๐—ง Using insights, intuition, and experience of individuals or groups with deep knowledge in a specific area to forecast future events or trends. ๐—˜๐—ซ๐—ฃ๐—ข๐—ก๐—˜๐—ก๐—ง๐—œ๐—”๐—Ÿ ๐—ฆ๐— ๐—ข๐—ข๐—ง๐—›๐—œ๐—ก๐—š A weighted moving average method where more recent data points have a higher influence. Effective for short-term. ๐—ฅ๐—˜๐—š๐—ฅ๐—˜๐—ฆ๐—ฆ๐—œ๐—ข๐—ก It models the relationship between a dependent variable and one or more independent variables. Used when a relationship between variables is suspected. ๐— ๐—ข๐—ก๐—ง๐—˜ ๐—–๐—”๐—ฅ๐—Ÿ๐—ข ๐—ฆ๐—œ๐— ๐—จ๐—Ÿ๐—”๐—ง๐—œ๐—ข๐—ก A probabilistic forecasting technique that uses random sampling to simulate a range of possible outcomes. Ideal for assessing risk and uncertainty. ๐— ๐—ข๐—ฉ๐—œ๐—ก๐—š ๐—”๐—ฉ๐—˜๐—ฅ๐—”๐—š๐—˜๐—ฆ This method smooths out fluctuations in data by averaging past data points over a specific period. Ideal for short-term forecasting. ๐— ๐—”๐—–๐—›๐—œ๐—ก๐—˜ ๐—Ÿ๐—˜๐—”๐—ฅ๐—ก๐—œ๐—ก๐—š Uses algorithms that learn from data to predict future outcomes. Can identify non-linear relationships and complex patterns. ๐—›๐—œ๐—ฆ๐—ง๐—ข๐—ฅ๐—œ๐—–๐—”๐—Ÿ ๐—š๐—ฅ๐—ข๐—ช๐—ง๐—› ๐—ฅ๐—”๐—ง๐—˜๐—ฆ Involve using the growth rate of a particular variable (e.g., revenue, sales, market size) from past periods as a basis for forecasting future growth.