Yep!
From: "Allison, Timothy B." <talli...@mitre.org> Reply-To: "user@tika.apache.org" <user@tika.apache.org> Date: Friday, July 7, 2017 at 3:52 AM To: "user@tika.apache.org" <user@tika.apache.org> Subject: RE: Tika content detection and crawled "remote" content Should we add a WARC parser? J From: Julien Nioche [mailto:lists.digitalpeb...@gmail.com] Sent: Friday, July 7, 2017 3:43 AM To: user@tika.apache.org Subject: Re: Tika content detection and crawled "remote" content Is anyone aware of a tool to run Tika on a WARC file? Everything required for detection and parsing is contained (URL, HTTP metadata, binary content). you could do that with my good old Behemoth in 2 steps : WARC to Behemoth format then run Tika on that On 6 July 2017 at 13:27, Sebastian Nagel <wastl.na...@googlemail.com> wrote: Hi, > Otherwise, for anything else (eg that word / graphviz one), please do open up > JIRAs! Done, see TIKA-2242. >> Why, yes, please! JIRA with small samples would be fantastic. 1000 randomly chosen examples per content-type are ready: https://commoncrawl-dev.s3.amazonaws.com/tika-content-type-detection/test/ tika_html_server_side_scripting_lang_php.warc.gz tika_html_server_side_scripting_lang_asp.warc.gz tika_html_server_side_scripting_lang_coldfusion.warc.gz tika_html_server_side_scripting_lang_jsp.warc.gz tika_html_server_side_scripting_lang_cgi.warc.gz tika_html_server_side_scripting_lang_perl.warc.gz Note: there are few real PHP/JSP/Perl/... documents among them. If there is no "global" solution (TIKA-2419), I'll open "smaller" Jiras. Is anyone aware of a tool to run Tika on a WARC file? Everything required for detection and parsing is contained (URL, HTTP metadata, binary content). Thanks, Sebastian On 07/05/2017 04:07 PM, Nick Burch wrote: > Having taken a "quick" look over lunch at some of the "programming language" > ones, and gone down a > rabbit whole... I think at least some of them are as described in TIKA-2419, > where our change to the > HTML magic priority to fix for HTML-containing formats like email had broken > some things. > > I've done a quick fix for 1.16, but it'd be good to try the impact of other > things, eg dropping the > xml priority to match the html one to see if that helps / breaks other things > > > Otherwise, for anything else (eg that word / graphviz one), please do open up > JIRAs! > > Thanks > Nick > > On 05/07/17 14:10, Allison, Timothy B. wrote: >> Why, yes, please! JIRA with small samples would be fantastic. I think >> working in desc order of >> most common to least would be best...php, asp, coldfusion. >> >> I'm about to cut 1.16, but I look forward to improving Tika with this >> tremendously useful data. >> >> Again, many thanks! >> >> Cheers, >> >> Tim >> >> -----Original Message----- >> From: Sebastian Nagel [mailto:wastl.na...@googlemail.com] >> Sent: Wednesday, July 5, 2017 9:03 AM >> To: user@tika.apache.org >> Subject: Re: Tika content detection and crawled "remote" content >> >> Hi Tim, >> >> thanks! Let me know if I should take any actions (e.g., open issue(s) on >> Jira) or whether I can >> help by compiling smaller test sets. >> >> Best, >> Sebastian >> >> On 07/05/2017 02:09 PM, Allison, Timothy B. wrote: >>> This is FANTASTIC!!! Thank you, Sebastian! >>> >>> I suspect that we should try to fix these at the Tika level. We'll never >>> be 100%, but most of >>> the problems you describe _should_ be fixable. >>> >>> > If anyone is interested in using the detected MIME types or anything >>> else from Common Crawl - >>> I'm happy to help! The URL index [4] contains now a new field >>> "mime-detected" which makes it >>> easy to search or grep for confusion pairs. >>> >>> This is an amazing step forward for our regression corpus. We used to rely >>> on the http headers >>> and/or file suffix to oversample non-html. This will allow far cleaner >>> pulls. >>> >>> -----Original Message----- >>> From: Sebastian Nagel [mailto:wastl.na...@googlemail.com] >>> Sent: Tuesday, July 4, 2017 6:18 AM >>> To: user@tika.apache.org >>> Subject: Tika content detection and crawled "remote" content >>> >>> Hi, >>> >>> recently I've plugged in Tika's content detection into Common Crawl's >>> crawler (modified Nutch) >>> with the target to get clean and correct MIME type - the HTTP Content-Type >>> may contain garbage >>> and isn't always correct [1]. >>> >>> For the June 2017 crawl I've prepared a comparison of content types >>> sent by the server in the HTTP header and as detected by Tika 1.15 >>> [2]. It shows that content types by Tika are definitely clean >>> (1,400 different content types vs. more than 6,000 content type "strings" >>> from HTTP headers). >>> >>> A look on the "confusions" where Content-Type and Tika differ, shows a >>> mixed picture: some pairs >>> are plausible, e.g., if Tika changes the type to a more precise subtype or >>> detects the MIME at all: >>> >>> Tika-1.15 HTTP-Content-Type >>> 1001968023 application/xhtml+xml text/html >>> 2298146 application/rss+xml text/xml >>> 617435 application/rss+xml application/xml >>> 613525 text/html unk >>> 361525 application/xhtml+xml unk >>> 297707 application/rdf+xml application/xml >>> >>> >>> However, there are a few dubious decisions, esp. the group of web >>> server-side scripting languages >>> (ASP, JSP, PHP, ColdFusion, etc.): >>> >>> Tika-1.15 HTTP-Content-Type >>> 2047739 text/x-php text/html >>> 681629 text/asp text/html >>> 193095 text/x-coldfusion text/html >>> 172318 text/aspdotnet text/html >>> 139033 text/x-jsp text/html >>> 38415 text/x-cgi text/html >>> 32092 text/x-php text/xml >>> 18021 text/x-perl text/html >>> >>> Of course, due to misconfigurations some servers may deliver the script >>> files unmodified but in >>> general I wouldn't expect that this happens for millions of pages. I've >>> checked some of the >>> affected URLs: >>> >>> - HTML fragment (no declaration of <!DOCTYPE...> or <html> opening >>> tag) >>> >>> https://www.projectmanagement.com/profile/profile_contributions.cfm?profileID=46773580&popup=&c_b=0&c_mb=0&c_q=0&c_a=2&c_r=1&c_bc=1&c_wc=0&c_we=0&c_ar=0&c_ack=0&c_v=0&c_d=0&c_ra=2&c_p=0 >>> >>> http://www.privi.com/product-details.asp?cno=C10910011 >>> http://mental-ray.de/Root_alt/Default.asp >>> http://ekyrs.org/support/index.php?action=profile >>> http://cwmorse.eu5.org/lineal/mostrar.php?contador=200 >>> >>> - (overlong) comment block at start of HTML which "masks" the HTML >>> declaration >>> http://www.mannheim-virtuell.de/index.php?branchenID=2&rubrikID=24 >>> >>> http://www.exoduschurch.org/bbs/view.php?id=sunday_school&page=1&sn1=&divpage=1&sn=off&ss=on&sc=on&select_arrange=headnum&desc=asc&no=6 >>> >>> >>> https://www.preventiongenetics.com/About/Resources/disease/MarfansSyndrome.php >>> https://de.e-stories.org/categories.php?&lan=nl&art=p >>> >>> - HTML with some scripting fragments ("<?php?>") present: >>> http://www.eco-ani-yao.org/shien/ >>> >>> - others are clearly HTML (looks more like a bug, at least, there is no >>> simple explanation) >>> http://www.proedinc.com/customer/content.aspx?redid=9 >>> >>> http://cball.dyndns.org/wbb2/board.php?boardid=8&sid=bf3b7971faa23413fa1164be0c068f79 >>> http://eusoma.org/Engx/Info/ContactUs.aspx?cont=contact >>> http://cball.dyndns.org/wbb2/map.php?sid=bf3b7971faa23413fa1164be0c068 >>> f79 >>> >>> >>> Obviously certain file suffixes (.php, .aspx) should get less weight >>> compared to Content-Type >>> sent from the responding server. >>> Now my question: where's the best place to fix this: in the crawler [3] or >>> in Tika? >>> >>> If anyone is interested in using the detected MIME types or anything else >>> from Common Crawl - I'm >>> happy to help! The URL index [4] contains now a new field "mime-detected" >>> which makes it easy to >>> search or grep for confusion pairs. >>> >>> >>> Thanks and best, >>> Sebastian >>> >>> >>> [1] https://github.com/commoncrawl/nutch/issues/3 >>> [2] >>> s3://commoncrawl-dev/tika-content-type-detection/content-type-diff-tik >>> a-1.15-cc-main-2017-26.txt.xz >>> >>> https://commoncrawl-dev.s3.amazonaws.com/tika-content-type-detection/c >>> ontent-type-diff-tika-1.15-cc-main-2017-26.txt.xz >>> [3] >>> https://github.com/apache/nutch/blob/master/src/java/org/apache/nutch/ >>> util/MimeUtil.java#L152 [4] >>> http://commoncrawl.org/2015/04/announcing-the-common-crawl-index/ >>> >> > -- Open Source Solutions for Text Engineering http://www.digitalpebble.com http://digitalpebble.blogspot.com/ #digitalpebble
