SCALA 2015 - Proceedings of the 6th ACM SIGPLAN Symposium on Scala, co-located with PLDI 2015

Country

United States

Universities and research institutions in United States
Media Ranking in United States

Subject Area and Category

Computer Science
- Software

Earth and Planetary Sciences
- Geophysics

Publisher

H-Index

Publication type

Conferences and Proceedings

ISSN

Coverage

Information

Homepage

Scope

Scala is a large and very powerful language. This is simultaneously its greatest strength and weakness. On the one hand, Scala is adaptable: it is used in a wide number of applications, from web programming to data processing to DSLs to systems programming; from strong typing to weak. However the drawbacks are also considerable: the unsuspecting outsider sees a playground of ideas; a bewildering buffet of syntax, abstraction, and typing. If something is to be done, Scala offers five ways to do it. So how do we make Scala work in a large-scale setting, where thousands of engineers grapple daily with millions of lines of code? What works well today, what doesn't? What matters in this setting, what does not? How can Scala evolve to better support large-scale software engineering? I will talk about how we make use of Scala at Twitter; about which features have turned out to be indispensable, as well as those that have not; the tools we employ, the ones we wish we had; how we teach newcomers, and how they fare; and about the practicalities of maintaining a large and highly interdependent Scala codebase.

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SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
2016	0.140
2017	0.209
2018	0.103

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
2016	0
2017	0
2018	0

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	2016	0.444
Cites / Doc. (4 years)	2017	1.000
Cites / Doc. (4 years)	2018	0.667
Cites / Doc. (3 years)	2016	0.444
Cites / Doc. (3 years)	2017	1.000
Cites / Doc. (3 years)	2018	0.667
Cites / Doc. (2 years)	2016	0.444
Cites / Doc. (2 years)	2017	1.000
Cites / Doc. (2 years)	2018	0.000

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	2016	0
Self Cites	2017	0
Self Cites	2018	0
Total Cites	2016	4
Total Cites	2017	9
Total Cites	2018	6

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	2016	0.444
External Cites per document	2017	1.000
External Cites per document	2018	0.667
Cites per document	2016	0.444
Cites per document	2017	1.000
Cites per document	2018	0.667

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
2016	0
2017	0
2018	0

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	2016	2
Non-citable documents	2017	2
Non-citable documents	2018	2
Citable documents	2016	7
Citable documents	2017	7
Citable documents	2018	7

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	2016	5
Uncited documents	2017	6
Uncited documents	2018	6
Cited documents	2016	4
Cited documents	2017	3
Cited documents	2018	3

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