什么是更好的期刊影响因子/指数(JIF)?

2021-02-18 MedSci原创 MedSci原创

期刊影响因子在国际上有多种不同的计算规则,每种规则均有争议。

期刊影响因子/指数在国际上有多种不同的计算规则,每种规则均有争议。由于每家英文称呼略有区别,包括impact factor, journal rank, scientific journal impact factor等,译为中文则称为影响因子,影响指数,排名等。其目的都是从不同角度阐述一个期刊在国际上的地位,从而指导研究者和医生向哪些期刊投稿。

H-index:是google推出的指标,H指数是作者级别的指标,旨在衡量科学家或学者出版物的生产率和引文影响。 该指数基于科学家引用次数最多的论文集以及他们在其他出版物中获得的引用次数。也可衡量一个期刊的水平。

SCR影响指数(SCR impact factor):scijournal推出的数据,分为2年,3年,4年影响因子。读者根据自己的需要选择合适的指标。这个计算从某种程度相对更为合理,更能反映期刊的真实水平。但是,推出时间相对较短。JIF基于该期刊过去两年中特定期刊发表的全部文章(含article,letter,review)的年平均被引用次数。 期刊影响因子通常用作替代期刊在其领域内的相对重要性。具体见:Science Journal Impact Factor

期刊影响指数(Journal impact index,JII):综合了Clarivate和Scopus计算的优缺点,重新设定一套规则。一方面涵盖的文章更全面,防止杂志通过发表综述或短文等形式,提高影响因子,同时,也避免期刊影响因子波动过大,更能客观地反映一个期刊的真实水平。JII与JIF十分近似,基于该期刊过去两年中特定期刊发表的主要文章(含article,letter,review,但不含editor, response等类型)的年平均被引用次数, 期刊影响因子通常用作替代期刊在其领域内的相对重要性。JII与影响因子相比,更为科学,更能反映期刊实际影响力。

CiteScore:Elsevier 重磅推CiteScore后,一直被认为是IF的强有力竞争者,CiteScore取代IF之声也是不绝于耳。随着IF与CiteScore之间的较量逐步升级,两者间的比较也成为学术界经久不息的话题。CiteScore以及对应的数据库Scopus是免费的。而IF对应的Web of Science是收费的。Scopus数据库涵盖了更多的期刊(约为SCI期刊的一倍多),其中中文期刊显著增加。可见CiteScore对多语言期刊的重视,以及持续发展的长远规划。CiteScore的指标算法比IF需要更广的年限,即连续三年的发表文献数量在第四年的引用次数。而IF是连续两年的发表文章数量在第三年的引用次数。至于是三年还是两年更好,目前尚存在争议。具体分析也可以参见我们上次的推送。在纳入发表文献数量时,CiteScore更强调范围,而较少限定发表文献的类型,即所有发表的Letter,Correspondence, Comments, Communicaton, Editor都算发表的文章数分母(远远大于SCI文章数分母)。因此,很多杂志的CiteScore排名与IF排名相比会发生巨大的变化。

Scimago杂志排行(SJR):由Scimago依据Scopus数据库计算出的期刊杂志排名,也是免费公开的,涵盖了32000种期刊。链接:SJR : Scientific Journal Rankings (scimagojr.com)

Clarivate Analytics计算的影响因子:主要基于的期刊引证报告(Journal Citation Reports,JCR)中的一项数据。 即某期刊前两年发表的论文在该报告年份(JCR year)中被引用总次数除以该期刊在这两年内发表的论文总数。这是一个国际上通行的期刊评价指标,但是它排除了期刊中发表的letter,综述等文章,因此,很多期刊通过发表综述,或letter,report等形式的文章,变相提高影响因子,使得影响因子有时呈现失真状态。同时,以得出在2019年发布的当年(2018年)JIF。例​​如,某期刊在2016年和2017年发表了100篇文章,而这些文章在2018年获得400次引用,该杂志的2018年JIF为4。这表明该期刊发表的文章平均每篇获得4次引用,但实际上,引用的分布不均,评论文章的收益通常更高比研究文章要多。即使在同一期刊上发表的文章中,有些引用极高,有些则无人引用。

期刊热门指数(Journal hotlight index):是梅斯医学于2012年推出的指数,主要反映中国学者对各期刊的热门程度,热门程度只代表该期刊被投稿量,关注度等,不代表期刊的影响水平,但是能够快速发表与识别期刊对影响因子,文章的操纵情况,如果热门指数上升过快,表明该期刊可能有一定的动作,吸纳文章。

特性 Clarivate影响因子IF Elsevier的CiteScore 梅斯的JII
数据源 web of science Scopus Scopus, embase等
涵盖期刊 约14000种 约43000种 约21500种
推出时间 1975年 2016年 2019年
计算时间段 2年 3年 2年
获取渠道 收费 免费 免费
更新时间 每年 每年 每年
涵盖文章类型 以article为主 所有类型 主要文章类型,排除编辑回信,评论等类型
影响因子波动 较小 较大 较小
适用范围 学术期刊 学术期刊 学术期刊

梅斯医学希望建立一个相对客观,公正,且免费的期刊评价体系,有助于期刊良性发展。

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    2021-02-19 ms5000001524263215

    IF值怎么查不了了?

    3

    展开3条回复
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    2021-10-15 JR19860219
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    2021-04-14 梅干儿

    三人行,必有我师。 #梅斯医学科研互助群# 欢迎您的加入,添加【梅斯医学科研助手WeChat:medsci_2021】邀您进群! 【社群简介】👉 梅斯医学目前已建立覆盖肿瘤、心血管、神经、消化、内分泌、呼吸等30个科室的学习交流社群。 【入群福利】👉 群内可实时交流病例,提问同行,跨群讨论,每天更新前沿医学资讯和指南共识,每周推出至少1场专业直播,不时共享科研干货,入群即可获得100份SCI写作攻略!

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=925537, encodeId=22a092553eee, content=IF值怎么查不了了? , beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=3, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=fb2a5397834, createdName=ms5000001524263215, createdTime=Fri Feb 19 20:52:21 CST 2021, time=2021-02-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2088654, encodeId=e2f52088654ad, content=<a href='/topic/show?id=45ee103010a' target=_blank style='color:#2F92EE;'>#JIF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10301, encryptionId=45ee103010a, topicName=JIF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=20b5274, createdName=JR19860219, createdTime=Fri Oct 15 17:26:24 CST 2021, time=2021-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=957006, encodeId=cfb195e00692, content=三人行,必有我师。 <a href='/topic/show?id=d55f104233bd' target=_blank style='color:#2F92EE;'>#梅斯医学科研互助群#</a> 欢迎您的加入,添加【梅斯医学科研助手WeChat:medsci_2021】邀您进群! 【社群简介】👉 梅斯医学目前已建立覆盖肿瘤、心血管、神经、消化、内分泌、呼吸等30个科室的学习交流社群。 【入群福利】👉 群内可实时交流病例,提问同行,跨群讨论,每天更新前沿医学资讯和指南共识,每周推出至少1场专业直播,不时共享科研干货,入群即可获得100份SCI写作攻略!, beContent=null, objectType=article, channel=null, level=null, likeNumber=177, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=104233, encryptionId=d55f104233bd, topicName=梅斯医学科研互助群)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210413/08ec7710e47c4f6dba6c277207bf00ec/823f09e953ea44188e56b38cd2f16334.jpg, createdBy=ec565230154, createdName=梅干儿, createdTime=Wed Apr 14 18:24:02 CST 2021, time=2021-04-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=957005, encodeId=1d7195e005ed, content=👇👇👇【社群入口】移动端用户可点击图片长按保存,到WeChat打开扫描入群!, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=[AttachmentDto(url=https://img.medsci.cn/comment/20210414/aed609423aa540ed9446e2c8b9a3ebaf.png, type=image, width=464, height=464)], authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210413/08ec7710e47c4f6dba6c277207bf00ec/823f09e953ea44188e56b38cd2f16334.jpg, createdBy=ec565230154, createdName=梅干儿, createdTime=Wed Apr 14 18:23:35 CST 2021, time=2021-04-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=925256, encodeId=9b50925256dd, content=好的, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6345149579, createdName=14692f92m26暂无昵称, createdTime=Thu Feb 18 12:30:49 CST 2021, time=2021-02-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=925233, encodeId=3f12925233c8, content=great, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210702/6007ed07799040abb56cdb566d5041aa/b7aa1e7ea0c84b91b63984abfacf46c6.jpg, createdBy=67225453303, createdName=ms4000000545202675, createdTime=Thu Feb 18 10:38:45 CST 2021, time=2021-02-18, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=925537, encodeId=22a092553eee, content=IF值怎么查不了了? , beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=3, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=fb2a5397834, createdName=ms5000001524263215, createdTime=Fri Feb 19 20:52:21 CST 2021, time=2021-02-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2088654, encodeId=e2f52088654ad, content=<a href='/topic/show?id=45ee103010a' target=_blank style='color:#2F92EE;'>#JIF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10301, encryptionId=45ee103010a, topicName=JIF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=20b5274, createdName=JR19860219, createdTime=Fri Oct 15 17:26:24 CST 2021, time=2021-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=957006, encodeId=cfb195e00692, content=三人行,必有我师。 <a href='/topic/show?id=d55f104233bd' target=_blank style='color:#2F92EE;'>#梅斯医学科研互助群#</a> 欢迎您的加入,添加【梅斯医学科研助手WeChat:medsci_2021】邀您进群! 【社群简介】👉 梅斯医学目前已建立覆盖肿瘤、心血管、神经、消化、内分泌、呼吸等30个科室的学习交流社群。 【入群福利】👉 群内可实时交流病例,提问同行,跨群讨论,每天更新前沿医学资讯和指南共识,每周推出至少1场专业直播,不时共享科研干货,入群即可获得100份SCI写作攻略!, beContent=null, objectType=article, channel=null, level=null, likeNumber=177, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=104233, encryptionId=d55f104233bd, topicName=梅斯医学科研互助群)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210413/08ec7710e47c4f6dba6c277207bf00ec/823f09e953ea44188e56b38cd2f16334.jpg, createdBy=ec565230154, createdName=梅干儿, createdTime=Wed Apr 14 18:24:02 CST 2021, time=2021-04-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=957005, encodeId=1d7195e005ed, content=👇👇👇【社群入口】移动端用户可点击图片长按保存,到WeChat打开扫描入群!, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=[AttachmentDto(url=https://img.medsci.cn/comment/20210414/aed609423aa540ed9446e2c8b9a3ebaf.png, type=image, width=464, height=464)], authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210413/08ec7710e47c4f6dba6c277207bf00ec/823f09e953ea44188e56b38cd2f16334.jpg, createdBy=ec565230154, createdName=梅干儿, createdTime=Wed Apr 14 18:23:35 CST 2021, time=2021-04-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=925256, encodeId=9b50925256dd, content=好的, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6345149579, createdName=14692f92m26暂无昵称, createdTime=Thu Feb 18 12:30:49 CST 2021, time=2021-02-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=925233, encodeId=3f12925233c8, content=great, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210702/6007ed07799040abb56cdb566d5041aa/b7aa1e7ea0c84b91b63984abfacf46c6.jpg, createdBy=67225453303, createdName=ms4000000545202675, createdTime=Thu Feb 18 10:38:45 CST 2021, time=2021-02-18, status=1, ipAttribution=)]
    2021-02-18 14692f92m26暂无昵称

    好的

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=925537, encodeId=22a092553eee, content=IF值怎么查不了了? , beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=3, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=fb2a5397834, createdName=ms5000001524263215, createdTime=Fri Feb 19 20:52:21 CST 2021, time=2021-02-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2088654, encodeId=e2f52088654ad, content=<a href='/topic/show?id=45ee103010a' target=_blank style='color:#2F92EE;'>#JIF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10301, encryptionId=45ee103010a, topicName=JIF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=20b5274, createdName=JR19860219, createdTime=Fri Oct 15 17:26:24 CST 2021, time=2021-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=957006, encodeId=cfb195e00692, content=三人行,必有我师。 <a href='/topic/show?id=d55f104233bd' target=_blank style='color:#2F92EE;'>#梅斯医学科研互助群#</a> 欢迎您的加入,添加【梅斯医学科研助手WeChat:medsci_2021】邀您进群! 【社群简介】👉 梅斯医学目前已建立覆盖肿瘤、心血管、神经、消化、内分泌、呼吸等30个科室的学习交流社群。 【入群福利】👉 群内可实时交流病例,提问同行,跨群讨论,每天更新前沿医学资讯和指南共识,每周推出至少1场专业直播,不时共享科研干货,入群即可获得100份SCI写作攻略!, beContent=null, objectType=article, channel=null, level=null, likeNumber=177, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=104233, encryptionId=d55f104233bd, topicName=梅斯医学科研互助群)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210413/08ec7710e47c4f6dba6c277207bf00ec/823f09e953ea44188e56b38cd2f16334.jpg, createdBy=ec565230154, createdName=梅干儿, createdTime=Wed Apr 14 18:24:02 CST 2021, time=2021-04-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=957005, encodeId=1d7195e005ed, content=👇👇👇【社群入口】移动端用户可点击图片长按保存,到WeChat打开扫描入群!, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=[AttachmentDto(url=https://img.medsci.cn/comment/20210414/aed609423aa540ed9446e2c8b9a3ebaf.png, type=image, width=464, height=464)], authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210413/08ec7710e47c4f6dba6c277207bf00ec/823f09e953ea44188e56b38cd2f16334.jpg, createdBy=ec565230154, createdName=梅干儿, createdTime=Wed Apr 14 18:23:35 CST 2021, time=2021-04-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=925256, encodeId=9b50925256dd, content=好的, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6345149579, createdName=14692f92m26暂无昵称, createdTime=Thu Feb 18 12:30:49 CST 2021, time=2021-02-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=925233, encodeId=3f12925233c8, content=great, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210702/6007ed07799040abb56cdb566d5041aa/b7aa1e7ea0c84b91b63984abfacf46c6.jpg, createdBy=67225453303, createdName=ms4000000545202675, createdTime=Thu Feb 18 10:38:45 CST 2021, time=2021-02-18, status=1, ipAttribution=)]
    2021-02-18 ms4000000545202675

    great

    0

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