***～会飞的蝎子～学习宁静致远 » 日志 » Physicists investigate 'best friends forever'--return your friends' call
Physicists investigate 'best friends forever'--return your friends' call
蝎子 发表于 2008-05-19 08:18:18
图示如下：粉色为女性，蓝色为男性，灰色性别未知；结点大小跟年龄成正比；连线的颜色和宽度显示关系持久性（通话频率和时间）。结果发现，决定关系持久性得最强指标是相互回电，就是咱们说的礼尚往来。另外，当一个人的朋友们之间相互联系，他们自己的关系也更持久。这个研究还讨论了 “交际花”的特性，就是在网络中有很多连线的人，原来他们不仅认识的人多，关系持久的也多。也就是说，这些社会性强的人并不因为数量而牺牲质量，而是在两方面都有很好的表现.
Some friendships are short and fleeting, while others may last years. Although a wide variety of factors go into determining the strength of our relationships, the long-lasting ones seem to share a number of the same characteristics, according to a recent study.
Using data from nearly 2 million people and 8 million phone calls over the course of a year, physicist Cesar Hidalgo from the University of Notre Dame and sociologist Carlos Rodriguez-Sickert from the Pontifical Catholic University of Chile have investigated the persistence of relationships within the cell phone network. Somewhat intuitively, they found that the leading cause of persistent relationships is reciprocity - returning a friend´s call. Further, they could use these characteristics to predict the nature of relationships in the future.
As the researchers explain in their study, the persistence of the connection between two individuals is a measurement of how often they call each other. The scientists analyzed 15-day intervals, and determined if the two callers made contact within each interval. The greater number of these chunks of time in which contact occurred, the higher the pair´s persistence value was.
The scientists found that the majority (60%) of ties between two callers lasted for just one 15-day interval. The next 20% of ties disappeared slowly throughout the course of the year, and the remaining 20% persisted for the entire one-year period.
The results showed that the strongest factor determining persistence values was when individuals returned calls to each other. When links were reciprocated, those links had a greater chance of persisting for longer time periods. Also, when an individual´s connections had connections among themselves (when a person´s friends knew each other), his or her own connections lasted longer. The results also revealed insight into "social butterflies" - individuals with a high number of links.
Some friendships are short and fleeting, while others may last years. Although a wide variety of factors go into determining the strength of our relationships, the long-lasting ones seem to share a number of the same characteristics, according to a recent study.
Using data from nearly 2 million people and 8 million phone calls over the course of a year, physicist Cesar Hidalgo from the University of Notre Dame and sociologist Carlos Rodriguez-Sickert from the Pontifical Catholic University of Chile have investigated the persistence of relationships within the cell phone network. Somewhat intuitively, they found that the leading cause of persistent relationships is reciprocity - returning a friend´s call. Further, they could use these characteristics to predict the nature of relationships in the future.
As the researchers explain in their study, the persistence of the connection between two individuals is a measurement of how often they call each other. The scientists analyzed 15-day intervals, and determined if the two callers made contact within each interval. The greater number of these chunks of time in which contact occurred, the higher the pair´s persistence value was.
The scientists found that the majority (60%) of ties between two callers lasted for just one 15-day interval. The next 20% of ties disappeared slowly throughout the course of the year, and the remaining 20% persisted for the entire one-year period.
The results showed that the strongest factor determining persistence values was when individuals returned calls to each other. When links were reciprocated, those links had a greater chance of persisting for longer time periods. Also, when an individual´s connections had connections among themselves (when a person´s friends knew each other), his or her own connections lasted longer. The results also revealed insight into "social butterflies" - individuals with a high number of links.
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