composite index

简明释义

综合指数

英英释义

例句

1.We decided to create a composite index (复合索引) on the product_id and category_id to enhance search efficiency.

我们决定在product_id和category_id上创建一个composite index (复合索引)以提高搜索效率。

2.The database performance improved significantly after we implemented a composite index (复合索引) on the user_id and timestamp columns.

在我们对user_id和timestamp列实施了composite index (复合索引)后，数据库性能显著提高。

3.The composite index (复合索引) allowed us to retrieve records faster than with single-column indexes.

该composite index (复合索引)使我们比使用单列索引更快地检索记录。

4.Using a composite index (复合索引) can help speed up complex queries that filter by multiple columns.

使用composite index (复合索引)可以加速通过多个列过滤的复杂查询。

5.When designing the database schema, consider using a composite index (复合索引) for frequently queried combinations of fields.

在设计数据库架构时，考虑对经常查询的字段组合使用composite index (复合索引)。

作文

In the world of economics and finance, various tools and metrics are employed to assess the performance of markets, economies, and investments. One such tool is the composite index, which serves as a vital indicator for analysts and investors alike. A composite index is essentially a statistical measure that aggregates multiple individual indices into a single figure, allowing for a more comprehensive analysis of trends and performance across different sectors or categories.The significance of a composite index lies in its ability to provide a broader perspective on market dynamics. For instance, consider the stock market. Instead of examining the performance of individual stocks in isolation, a composite index combines the performance of various stocks into one index, reflecting overall market sentiment. The most well-known example of this is the S&P 500, which includes 500 of the largest publicly traded companies in the United States. By looking at the S&P 500, investors can gauge the health of the American economy without having to analyze each company individually.Moreover, a composite index can also be applied in other fields such as real estate, where it might combine data from various property types to give a clearer picture of market trends. This aggregated data can help investors make informed decisions about where to invest their money based on overall market conditions rather than isolated data points.The construction of a composite index involves careful selection and weighting of the individual indices that comprise it. This process is crucial because the choice of components and their respective weights can significantly influence the overall index value. For example, if a composite index gives more weight to certain sectors that are currently underperforming, it may not accurately reflect the true state of the market. Therefore, creating a reliable composite index requires expertise and a deep understanding of the underlying economic factors.Furthermore, the interpretation of a composite index is equally important. Investors and analysts must understand the context behind the numbers. A rising composite index may indicate a booming economy, but it could also be influenced by a few high-performing sectors skewing the results. Conversely, a declining composite index may raise concerns, but it could also be a temporary fluctuation rather than a sign of long-term economic trouble.In conclusion, the composite index is an essential tool in the arsenal of economists, investors, and analysts. By aggregating multiple indices into one, it provides a clearer picture of market trends and economic performance. However, it is crucial to approach the composite index with a critical eye, considering the composition, weighting, and contextual factors that can influence its interpretation. As markets continue to evolve and become more complex, the importance of understanding tools like the composite index will only grow, making it an indispensable element of financial analysis and decision-making.

在经济和金融的世界中，各种工具和指标被用来评估市场、经济和投资的表现。其中一个工具就是复合指数，它对分析师和投资者来说都是一个重要的指标。复合指数本质上是一个统计测量，它将多个单独的指数聚合成一个数字，从而允许对不同部门或类别的趋势和表现进行更全面的分析。复合指数的重要性在于它能够提供对市场动态的更广泛的视角。例如，考虑到股票市场。与其孤立地检查个别股票的表现，不如将各种股票的表现结合成一个复合指数，以反映整体市场情绪。最著名的例子是标准普尔500指数（S&P 500），它包括美国500家最大的上市公司。通过查看标准普尔500指数，投资者可以在不必逐个分析每家公司情况下，判断美国经济的健康状况。此外，复合指数也可以应用于房地产等其他领域，在这些领域中，它可能会结合来自各种物业类型的数据，以更清晰地描绘市场趋势。这些聚合的数据可以帮助投资者根据整体市场状况做出明智的投资决策，而不是依赖孤立的数据点。构建复合指数涉及对组成它的各个单独指数的仔细选择和加权。这个过程至关重要，因为组件的选择及其相应的权重会显著影响整体指数值。例如，如果一个复合指数对某些当前表现不佳的行业给予更多权重，它可能无法准确反映市场的真实状态。因此，创建一个可靠的复合指数需要专业知识和对基础经济因素的深刻理解。此外，解读复合指数同样重要。投资者和分析师必须理解数字背后的背景。一个上升的复合指数可能表明经济繁荣，但它也可能受到少数表现良好的行业的影响，扭曲了结果。相反，一个下降的复合指数可能引发担忧，但它也可能是暂时的波动，而不是长期经济困境的迹象。总之，复合指数是经济学家、投资者和分析师工具箱中的一个重要工具。通过将多个指数聚合为一个，它提供了市场趋势和经济表现的更清晰的图景。然而，关键是要批判性地看待复合指数，考虑组成、加权和可以影响其解释的上下文因素。随着市场的不断发展和复杂化，理解像复合指数这样的工具的重要性只会增加，使其成为金融分析和决策中不可或缺的元素。