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This method has not been readily adopted, perhaps because of its complexity. The name says it all: get more insights using Harzing's "Publish or Perish" Google Scholar's extensive database might list publications that most academics would not include in an h-index analysis. As a general rule in many fields, an h-index that matches the number of years a scholar has been working in the field is a respectable score. The result is that there is little information about whether you published an article in a top journal on your own or whether you were one member of a huge team. It was found that the distribution of the h-index, although it depends on the field, can be normalized by a simple rescaling factor. The h-index is intended to measure simultaneously the quality and quantity of scientific output. The h-index is sometimes referred to as the Hirsch index or Hirsch number. The index works best when comparing scholars working in the same field; citation conventions differ widely among different fields. Or maybe is it simpler and better to conclude, as already suggested, that this indicator is bogus? Hirsch argues that the h index is preferable to other single-number criteria, such as the total number of papers, the total number of citations and citations per paper. I am a First World War historian. David wrote on June 27, 2012 at Very clearly explained. A scientific institution has a successive Hirsch-type-index of i when at least i researchers from that institution have an h-index of at least i. formatLanguageCode e ,"languageOnly"! Proceedings of the 19th ACM international conference on Information and knowledge management — CIKM '10. It has been stated that citation behavior in general is affected by field-dependent factors, which may invalidate comparisons not only across disciplines but even within different fields of research of one discipline. As an example, Author A has eight publications which have been cited a total of 338 times and Author B also has eight publications which have been cited a total of 28 times. Would you use it along with the h-index, or maybe even instead of it, for evaluating your peers, potential collaborators or job applicants? First, climbing the h-index ladder is something worth celebrating. Also displayed are the total number of citations that all of the articles in your profile have received, and the "i10-index", which shows how many of your articles have received at least 10 citations. So, he included the number of citations the articles received. The list is particularly helpful because it can be used to exclude false positives. Scopus has better coverage of conferences, but poor coverage of publications prior to 1996; Google Scholar has the best coverage of conferences and most journals though not all , but like Scopus has limited coverage of pre-1990 publications. A good H-index score depends not only on a prolific output but also on a large number of citations by other authors. The first paper has been cited 33 times, and gives us a 1 there is one paper that has been cited at least once. So it might be useful to vet the papers before calculating the h-index. Enter the scholar's name in the search box and click lookup. However, if you don't want to have such a public web presence, you can un-tick the "make my profile public" box on the final page of setting up your profile. How useful are bibliometric indices for the evaluation of "scientific quality" or "scientific productivity"? It relies on citations to your papers, not the journals, which is a truer measure of quality• Yes, there are subsequent modifications that attempt to improve upon it's weaknesses, but in my opinion the improvements don't amount to much more than splitting hairs. It is possible to try the predictions using an online tool. Step 2 - Populating Your Profile• While Scopus and Web of Science limit their analyses to published journal articles, conference proceedings, and books, its the entire Internet Google Scholar is using as its source of data. Maybe considered a less authoritarian resources than Web of Science. The h-index is not something that needs to be calculated on a daily basis, but it's good to know where you are for several reasons. It was invented by Jorge Hirsch in 2005, a physicist at the University of California. "The h index research output measurement: Two approaches to enhance its accuracy". A successive Hirsch-type-index for institutions has also been devised. The Conversation UK receives funding from these organisations A previously obscure scholarly metric has became an item of heated public debate. If you wanted to work out how influential a researcher was, you would simply add up the number of times other research papers had cited papers written by that researcher. 7 per cent, are self-citations. Yes, there is room for improvement, but Google Scholar's h-index is very welcome as a free alternative to the subscription based databases. The H-Index is a numerical indicator of how productive and influential a researcher is. Noorden, Richard Van February 6, 2020. For example, H-index scores are commonly used in the recruitment processes for academic positions and taken into consideration when applying for academic or research grants. Be sure to indicate limitations. It does not take into account the number of authors on a paper. edu email or any other valid Google account. Among the 22 scientific disciplines listed in the citation thresholds [thus excluding academics], physics has the second most citations after space science. But more importantly, the h-index is one of the measures funding agencies or the university's hiring committee calculate when you apply for a grant or a position. The e-index, the square root of surplus citations for the h-set beyond h 2, complements the h-index for ignored citations, and therefore is especially useful for highly cited scientists and for comparing those with the same h-index iso- h-index group. If your answer is yes, then you can go on to your next publication. Then, we look for the last position in which f is greater than or equal to the position we call h this position. , 2007 , in Proceedings of• You can also merge articles that Google has duplicate entries for in the same way. What is the H-index and how is it calculated? The m-index averages periods of high and low productivity throughout a career, which may or may not be reflective of the current situation of the scientist. Example: If a researcher has 15 papers, each of which has at least 15 citations, their h-index is 15. It is based on the number of articles they publish in so-called high impact factor journals. The H-index is displayed in the "Cited by" box on the right hand of your profile page. Further reading [ ]• If your paper is not being cited as much as you expected, try to find out what the problem might have been. "Hirsch-type indices for ranking institutions' scientific research output". You also have the option to make your profile public, or keep it private. Bornmann, L. Journal of the American Society for Information Science and Technology. However, Hirsch includes several caveats:• "What do we know about the h-index? For example, h-indexes in Medicine are much higher than in Mathematics• However, its use and importance have quickly expanded beyond physics and the sciences into a wide variety of disciplines and fields of study. The h-index can be timed to analyze its evolution during one's career, employing different time windows. h index of 40 after 20 years of scientific activity, characterizes outstanding scientists, likely to be found only at the top universities or major research laboratories. It has been argued that "For an individual researcher, a measure such as captures the structural properties of network whereas the h-index captures the citation impact of the publications. Subscription-based databases such as and the provide automated calculators. ; Kaski, Kimmo; Fortunato, Santo 2013. " Several author ranking systems such as based on have been proposed already, for instance the Phys Author Rank Algorithm. The i10-index is a simple measurement which shows how many of the author's papers have 10 or more citations. For example, if we have a researcher with 5 publications A, B, C, D, and E with 10, 8, 5, 4, and 3 citations, respectively, the h-index is equal to 4 because the 4th publication has 4 citations and the 5th has only 3. What are the weaknesses of the h-index? "Restricting the h-index to a publication and citation time window: A case study of a timed Hirsch index". Different citation patterns will mean, for example, an average medical researcher will generally have much larger h-index value than a world-class mathematician. The h index is a metric to assess the entire body of scholarly output by an author; not intended for a specific timeframe. Therefore, these disciplines have lower citation thresholds in the Essential Science Indicators, with the lowest citation thresholds observed in social sciences 154 , computer science 149 , and multidisciplinary sciences 147. "How to judge a book by its cover? There may be duplication of results, so check carefully. "The h index is the best measure of a scientist's research productivity". "A rational indicator of scientific creativity". If you published one paper that was widely cited and then never published a paper again after that, you would technically be successful. Can you trust the h-index calculated with Google Scholar? "What do citation counts measure? The h-index has been shown to have a strong discipline bias. Since Hirsch introduced the h index in 2005, this measure of academic impact has garnered widespread interest as well as proposals for other indices based on analyses of publication data such as the g index, h 2 index, m quotient, r index, to name a few. On average across the disciplines, a professor in the social sciences had an h-index about twice that of a lecturer or a senior lecturer, though the difference was the smallest in geography. What is a good H-Index score journal? "Assessing author self-citation as a mechanism of relevant knowledge diffusion". The RA-index accommodates improving the sensitivity of the h-index on the number of highly cited papers and has many cited paper and uncited paper under the h-core. Anderson, T. It, like all metrics, is based on data from the past and may not be a valid predictor of future performance. Language Editing Services by Elsevier Author Services: Find more about our. Alternatively, you can manually calculate it using Google Scholar or use this to make it easier. Note, there may be articles in these initial lists by other people who have the same name as you. Shortcomings of the h index• What is the importance of an h-index? To put it in a slightly more simple way - you give an H-index to someone on the basis of the number of papers H that have been cited at least H times. Among 36 new inductees in the National Academy of Sciences in biological and biomedical sciences in 2005, the median h-index was 57. Hirsch, physicist at San Diego State University in 2005. If however, we are simply given an H-index, then it it becomes possible to assess each scholar in a slightly more objective fashion. Rupert Witherow wrote on October 30, 2013 at Good explanation of a neat idea. But no serious researcher would say that the two are equal because their h-index is the same. Number of articles published. Partners provides funding as a founding partner of The Conversation UK. The c-index accounts not only for the citations but for the quality of the citations in terms of the collaboration distance between citing and cited authors. A long publication list looks good on your CV, but the number of articles published gives no indication of their impact on the field. "Outcome aware ranking in interaction networks". See the short video below for step-by-step instructions on where to find the value and what settings to consider. Productivity is quantified by the number of papers, and impact by the number of citations the researchers' publications have received. Bornmann, Lutz; Daniel, Hans-Dieter July 2007. "Bibliometrics for Internet media: Applying the h-index to YouTube". The h-index together with the i10-index is displayed in the panel on the right. For his 147 articles, Einstein has received 1,564 citations during his lifetime. This and the fact that there can always be exceptions to rules should be kept in mind especially in life-changing decision such as the granting or denying of tenure. "Quantifying Publication Impact". However, since Google Scholar's approach is fully automatic and not subject to any review, it can also be. For example, editors are aware that certain types of articles, such as reviews or techniques, are highly cited and thus will contribute significantly to the journal impact factor. If you do not have a Google account, you will need to create one. The h-index provides a useful metric for scientific performance, but only when viewed in the context of other factors. Scopus and Web of Science offer such functionality to some extent, but for the Google Scholar it's not possible to do right in your browser. Because the h-index was never meant to measure future publication success, recently, a group of researchers has investigated the features that are most predictive of future h-index. The second paper has been cited 30 times, and gives us a 2 there are two papers that have been cited at least twice. May 2020 Hirsch intended the h-index to address the main disadvantages of other bibliometric indicators, such as total number of papers or total number of citations. Google Scholar uses your email to confirm your account. The larger the number of important papers, the higher the h-index, regardless of where the work was published. For example, 15 publications cited 15 times or more, is a h-index of 15. In some fields, the h-index and other forms of metrics play a very small part if any in hiring and funding, and there are still many other means used by hiring and funding committees to assess scholarly contributions. Other factors should be considered in combination in evaluating an individual;• Hirsch in 2005 and published in the Proceedings of the National Academy of Sciences of the United States of America. This is because it combines the two, considering both publications and citations to arrive at a particular value. As a result, the reported by Google Scholar tends to be. While Google Scholar grabs citation information from all over the internet, Scopus and Web of Science restrict their data sources to classic academic sources. Other works that discuss the h index in comparison to various medical specialties are noted. After selecting a scholar, the program will query Google Scholar for citation data and populate a list of papers and present summary statistics on the right of this list. In the , Raoult has 2,053 articles published between 1979 and 2018, having received a total of 72,847 citations. "Assessing Scientific Research Performance and Impact with Single Indices". Neither the length of a publication nor the nature of each citation positive or negative is considered, so those measures of quantity and quality are not part of the picture. Step 1 - Setting Up a Google Scholar Profile• Although scoring intellectual activities is often an issue of debate, it also brings its own benefits:• It's limited in its functionality compared to the major academic databases and , but it is free, and you will easily know your way around because it is like doing a search on Google. getScriptPartFromCode e ,"currentOnly"! See below some of the most commonly used databases that help authors find their H-index values:• So give it a shot and see how you measure up against other scientists. The index is a measure of the number of highly impactful papers a scientist has published. Peterson, Ivars December 2, 2005. How many times have you been cited? Moreover, it can be calculated with the help of freely available software. In general you can only compare values within a single discipline. One can be easily convinced that ranking in coauthorship networks should take into account both measures to generate a realistic and acceptable ranking. This alleged indicator of quality has become a mirror in front of which researchers admire themselves or sneer at the pitiful h-index of their colleagues and rivals. Please, share your thoughts on it. More importantly, abandoning it would contribute to producing scientific papers that will be fewer in number, but certainly more robust. If you are applying for a scientific or academic position, hoping for a promotion or in need of research funding, it will therefore be wise to give your h-index score some consideration, but within reason. However, Hirsch noted that values of h will vary among disparate fields. The h-index is only one among various kinds of metrics now applied to the research-based writing of professional scholars, but it is an increasingly significant one. An s-index, accounting for the non-entropic distribution of citations, has been proposed and it has been shown to be in a very good correlation with h. A small number of publications that have been well-heeded by colleagues in the field i. This can create a very strange academic culture where it is quite possible to discuss academic matters for hours without once mentioning an idea. Even though Scopus needs to crunch millions of citations to find the h-index, the look-up is pretty fast. After selecting article groups to add, Google Scholar presents a few settings, allowing you to set up auto-updates and email notifications. Applications [ ] Indices similar to the h-index have been applied outside of author level metrics. We know, however, that the value of this index can be artificially inflated through author self-citations — when an author cites his own previous papers. Raoult Didier made front-page news in France for promoting hydroxychloroquine as a remedy for COVID-19. Head over to to get answers to all the questions regarding the h-index. Laboratoire d'Informatique de Grenoble RR-LIG-2008 technical report Report. This is a corrected version of a story originally published on July 8, 2020. It is not increased by a large number of poorly cited papers unlike total number of papers would be• To manually calculate your h-index, organize articles in descending order, based on the number of times they have been cited. More context:• In addition, specific databases, such as the database can automatically calculate the h-index for researchers working in. If yes, then your h-index is at least two. Add all of the groups of articles that may contain papers by you. Numbers are very different in social science disciplines: The Impact of the Social Sciences team at found that social scientists in the United Kingdom had lower average h-indices. Measuring scientific performance is both more complicated and important than it might seem at first. Hirsch suggested that, for physicists, a value for h of about 12 might be typical for advancement to tenure associate professor at major [US] research universities. It seems doubtful whether all fields of research can be effectively measured in this way. Judge Smails: Then how do you measure yourself with other golfers? Alternatives and modifications [ ] Further information: , and Various proposals to modify the h-index in order to emphasize different features have been made. Finally, the databases from which the h-index and other metrics are determined vary in the types of documents they consider and the fields of study they include, so the same scholar will not receive the same h value across all of them, and accurate comparison across fields and disciplines is impossible. Unfortunately, granting agencies or tenure committees that base their decisions on the journal impact factors support the former. As these metrics are percentages, they are intended to give a qualitative description to supplement the quantitative h-index. The h-index can be manipulated through self-citations, and if based on output, then even computer-generated documents can be used for that purpose, e. A high-impact paper counts regardless of whether your competitor kept it from being published in the top-tier journals…• If I go off into virgin territory and explore, for the first time ever, say, comparative studies of First World War popular music, I will get far fewer citations for a good while, and this may see, a strange reward for asking rarer questions. The index is designed to improve upon simpler measures such as the total number of citations or publications. The H-index also strips out any information about author order. It's available on Windows, and with some effort you can also run on macOS and Linux. Read our guide for further instructions. Bjorn Lomborg was said to have a low H-index and thus many questioned his appointment. "A bibliometric index based on the collaboration distance between cited and citing authors". They are also used to evaluate applicants for research grants. It is difficult to compare H-scores across fields. Each database has different coverage, so will come up with different h-index values. For example, was the research content irrelevant for the audience? However, in Jorge Hirsch demonstrated that the h-index is better than other indicators total papers, total citations, citations per paper at predicting future scientific achievement. Using Google Scholar for the h-index• See also: There are a number of situations in which h may provide misleading information about a scientist's output: Most of these however are not exclusive to the h-index. Clarivate Analytics Web of Science: a digital platform that provides the H-index with its Citation Reports feature• As the variants have proliferated, comparative studies have become possible showing that most proposals are highly correlated with the original h-index and therefore largely redundant, although alternative indexes may be important to decide between comparable CVs, as often the case in evaluation processes. The h-indices for "full" professors, based on data ranged from 2. Issues to be aware of:• A few notable modifications are the m- and g- and e-indices. " The h-index was suggested by Jorge E. Input data [ ] The h-index can be manually determined by using citation databases or using automatic tools. The index is based on the set of the scientist's most cited papers and the number of citations that they have received in other publications. However, you should care about this because these metrics are increasingly used by funding bodies and employers to allocate grants and jobs. To rectify this problem, Hirsch suggested another approach for calculating the value of researchers, which he rather immodestly called the H-index H for Hirsch of course. Journal of Surgical Education. The advantage of the h-index is that it combines productivity i. In other words, it is the number of publications that drives the index more than the number of citations, an indicator which remains the best measure of the visibility of scientific publications. This means that if you have published at least one well-cited document each year since your first publication — a decent textual output by any measure — you are among a successful group of scholars, and if you have published two or three times that number of well-cited documents over the same period of time, you are among the intellectual superstars of your discipline and probably of your time. In contrast, if the same publications have 25, 8, 5, 3, and 3 citations, then the index is 3 i. The h index will vary among resources depending on the publication data that is included in the calculation of the index. How to calculate your h-index using Google Scholar Google Scholar can automatically calculate your h-index, you just need to set up a first. Thus, the true predictability of future h-index is much lower compared to what has been claimed before. They assert that because Nobel Prize winners generally having a high h-index, the measure is a valid indicator of the individual quality of researchers. See also [ ]• It strikes me that most of the giants on whose shoulders we stand today would fare very poorly by this measure. "Dubious hit counts and cuckoo's eggs". It gives some degree of transparency about the influence they have in the field. It ignores the number and position of authors on a paper• Benefits• Basically, the H-index score is a standard scholarly metric in which the number of published papers, and the number of times their author is cited, is put into relation. Web of Science is a database that has compiled millions of articles and citations. From July 2011 have provided an automatically calculated h-index and within their own profile. For further assistance in this process, please or call 303-497-8559. 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