Re: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?

[lewis john mcgibbney]

Hi David,
The java.lang.NoClassDefFoundError issues could be resolved simply by
including the correct Jar artifacts.
 We will have the issue resolved correctly very soon and I will let you
know when Any23 2.2 is released.
Lewis

On Sat, Feb 10, 2018 at 11:42 AM, <user-digest-h...@nutch.apache.org> wrote:

> From: David Ferrero <david.ferr...@zion.com>
> To: user@nutch.apache.org
> Cc:
> Bcc:
> Date: Sat, 10 Feb 2018 12:41:57 -0700
> Subject: Re: NUTCH-1129, Any23, microdata parsing, indexing, and
> extraction?
> Awesome on Any23 2.2 forthcoming release. I look forward to it and
> subsequent bump to Nutch.
>
> In the meantime, I was successful to build Any23 from master, then copy
> the any23 jars into Nutch (master) then reference them in the plugin…
> 
> 
> 
> 
> 
>
> Unfortunately when I reran the nutch parsechecker it failed to parse
> anymore. A quick look at the logs/hadoop.log reveal that updated any23
> depends on new classes in the other jar files:
> Caused by: java.lang.NoClassDefFoundError: org/apache/commons/rdf/api/IRI
> Caused by: java.lang.NoClassDefFoundError: Could not initialize class
> org.semanticweb.owlapi.rio.OWLAPIRDFFormat
> java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError:
> org.jsoup.select.NodeTraversor.traverse(Lorg/
> jsoup/select/NodeVisitor;Lorg/jsoup/nodes/Node;)V
>
> I guess I would need to rebuild nutch from master (rather than just copy a
> few jar files) and ensure that any23’s jar dependencies as also references..
>
> > On Feb 9, 2018, at 1:45 PM, Lewis John McGibbney <lewi...@apache.org>
> wrote:
> >
> > Hi David,
> > We are in the process of releasing Any23 2.2, this will include the fix.
> > We can then come back to Nutch and make the upgrade and you should be
> all set.
> > Hopefully this will be achieved within around 72hrs. In the meantime,
> you can clone, build and deploy Any23 master. This will do the trick.
> > Lewis
> >
> > On 2018/02/09 07:31:10, David Ferrero <david.ferr...@zion.com> wrote:
> >> Thank you for this information. Since this is very much related to
> Any23 and microdata parsing, I’m going to ask what I believe is a related
> question but keep this same thread so it will be organized in one place:
> >>
> >> I noticed a lot of job boards such as dice.com <http://dice.com/>,
> monster.com <http://monster.com/>, etc use http://schema.org/JobPosting <
> http://schema.org/JobPosting> information, however many seem to use
> 

Re: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?

[David Ferrero]

Awesome on Any23 2.2 forthcoming release. I look forward to it and subsequent 
bump to Nutch.

In the meantime, I was successful to build Any23 from master, then copy the 
any23 jars into Nutch (master) then reference them in the plugin…






Unfortunately when I reran the nutch parsechecker it failed to parse anymore. A 
quick look at the logs/hadoop.log reveal that updated any23 depends on new 
classes in the other jar files:
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/rdf/api/IRI
Caused by: java.lang.NoClassDefFoundError: Could not initialize class 
org.semanticweb.owlapi.rio.OWLAPIRDFFormat
java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError: 
org.jsoup.select.NodeTraversor.traverse(Lorg/jsoup/select/NodeVisitor;Lorg/jsoup/nodes/Node;)V

I guess I would need to rebuild nutch from master (rather than just copy a few 
jar files) and ensure that any23’s jar dependencies as also references..

> On Feb 9, 2018, at 1:45 PM, Lewis John McGibbney <lewi...@apache.org> wrote:
> 
> Hi David,
> We are in the process of releasing Any23 2.2, this will include the fix.
> We can then come back to Nutch and make the upgrade and you should be all set.
> Hopefully this will be achieved within around 72hrs. In the meantime, you can 
> clone, build and deploy Any23 master. This will do the trick.
> Lewis
> 
> On 2018/02/09 07:31:10, David Ferrero <david.ferr...@zion.com> wrote: 
>> Thank you for this information. Since this is very much related to Any23 and 
>> microdata parsing, I’m going to ask what I believe is a related question 
>> but keep this same thread so it will be organized in one place:
>> 
>> I noticed a lot of job boards such as dice.com <http://dice.com/>, 
>> monster.com <http://monster.com/>, etc use http://schema.org/JobPosting 
>> <http://schema.org/JobPosting> information, however many seem to use > type="application/ld+json”>… rather than RDF.
>> Summer 2017, Google announced structured data guidance for Jobs:
>> https://developers.google.com/search/docs/data-types/job-posting 
>> <https://developers.google.com/search/docs/data-types/job-posting>
>> and a testing tool to validate your HTML: 
>> https://search.google.com/structured-data/testing-tool
>> I verified a few sample listings on the above mentioned job boards on 
>> google’s testing-tool and they validate OK.
>> 
>> So after looking at http://any23.apache.org/getting-started.html 
>> <http://any23.apache.org/getting-started.html> for the supported extractors, 
>> I see Any23 mentions it supports JSON+LD input, so I added this to 
>> nutch-site.xml to override the same property in nutch-default.xml:
>> 
>> 
>>any23.extractors
>>html-microdata,html-embedded-jsonld,rdf-jsonld
>>Comma-separated list of Any23 extractors (a list of 
>> extractors is available here: 
>> http://any23.apache.org/getting-started.html)
>> 
>> 
>> I expected to see additional information from nutch parsechecker after 
>> adding the jsonld extractors, however I see NO changes to Any23-Triples 
>> microdata parsed. 
>> 
>> What might I be doing wrong?
>> 
>>> On Feb 8, 2018, at 11:17 AM, lewis john mcgibbney <lewi...@apache.org> 
>>> wrote:
>>> 
>>> Hi David,
>>> Answers inline
>>> 
>>> On Thu, Feb 8, 2018 at 9:19 AM, <user-digest-h...@nutch.apache.org> wrote:
>>> 
>>>> 
>>>> From: David Ferrero <david.ferr...@zion.com>
>>>> To: user@nutch.apache.org
>>>> Cc:
>>>> Bcc:
>>>> Date: Thu, 8 Feb 2018 10:19:52 -0700
>>>> Subject: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?
>>>> Pull request #205 was recently merged into master branch for Nutch 1.x in
>>>> fulfillment of NUTCH-1129 "microdata for Nutch 1.x"
>>>> 
>>>> I am new to nutch and solr and have just started crawling and indexing a
>>>> few select websites. Using the built in html parsing/indexing, I am getting
>>>> searchable fields like url, content, host, sometimes a title, and a few
>>>> other indexing related fields like digest, boost, segment, and tstamp. That
>>>> said, I realized very quickly that I need better results. While exploring
>>>> the source of the website, I noticed references to schema.org and get
>>>> excited by what I see. That’s how I stumbled upon NUTCH-1129.
>>>> 
>>>> I’ve built apache-nutch-1.15-SNAPSHOT which includes Any23 
>>>> parser/indexer.
>>>> 
>>> 
&

Re: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?

[Lewis John McGibbney]

Hi David,
We are in the process of releasing Any23 2.2, this will include the fix.
We can then come back to Nutch and make the upgrade and you should be all set.
Hopefully this will be achieved within around 72hrs. In the meantime, you can 
clone, build and deploy Any23 master. This will do the trick.
Lewis

On 2018/02/09 07:31:10, David Ferrero <david.ferr...@zion.com> wrote: 
> Thank you for this information. Since this is very much related to Any23 and 
> microdata parsing, I’m going to ask what I believe is a related question 
> but keep this same thread so it will be organized in one place:
> 
> I noticed a lot of job boards such as dice.com <http://dice.com/>, 
> monster.com <http://monster.com/>, etc use http://schema.org/JobPosting 
> <http://schema.org/JobPosting> information, however many seem to use  type="application/ld+json”>… rather than RDF.
> Summer 2017, Google announced structured data guidance for Jobs:
> https://developers.google.com/search/docs/data-types/job-posting 
> <https://developers.google.com/search/docs/data-types/job-posting>
> and a testing tool to validate your HTML: 
> https://search.google.com/structured-data/testing-tool
> I verified a few sample listings on the above mentioned job boards on 
> google’s testing-tool and they validate OK.
> 
> So after looking at http://any23.apache.org/getting-started.html 
> <http://any23.apache.org/getting-started.html> for the supported extractors, 
> I see Any23 mentions it supports JSON+LD input, so I added this to 
> nutch-site.xml to override the same property in nutch-default.xml:
> 
> 
> any23.extractors
> html-microdata,html-embedded-jsonld,rdf-jsonld
> Comma-separated list of Any23 extractors (a list of 
> extractors is available here: 
> http://any23.apache.org/getting-started.html)
> 
> 
> I expected to see additional information from nutch parsechecker after adding 
> the jsonld extractors, however I see NO changes to Any23-Triples microdata 
> parsed. 
> 
> What might I be doing wrong?
> 
> > On Feb 8, 2018, at 11:17 AM, lewis john mcgibbney <lewi...@apache.org> 
> > wrote:
> > 
> > Hi David,
> > Answers inline
> > 
> > On Thu, Feb 8, 2018 at 9:19 AM, <user-digest-h...@nutch.apache.org> wrote:
> > 
> >> 
> >> From: David Ferrero <david.ferr...@zion.com>
> >> To: user@nutch.apache.org
> >> Cc:
> >> Bcc:
> >> Date: Thu, 8 Feb 2018 10:19:52 -0700
> >> Subject: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?
> >> Pull request #205 was recently merged into master branch for Nutch 1.x in
> >> fulfillment of NUTCH-1129 "microdata for Nutch 1.x"
> >> 
> >> I am new to nutch and solr and have just started crawling and indexing a
> >> few select websites. Using the built in html parsing/indexing, I am getting
> >> searchable fields like url, content, host, sometimes a title, and a few
> >> other indexing related fields like digest, boost, segment, and tstamp. That
> >> said, I realized very quickly that I need better results. While exploring
> >> the source of the website, I noticed references to schema.org and get
> >> excited by what I see. That’s how I stumbled upon NUTCH-1129.
> >> 
> >> I’ve built apache-nutch-1.15-SNAPSHOT which includes Any23 
> >> parser/indexer.
> >> 
> > 
> > Excellent.
> > 
> > 
> >> 
> >> Q: Now what?  How do I gain Any23 microdata parsing / indexing
> >> capabilities introduced by NUTCH-1129?
> >> Q: Do I replace parse-(html | tika)|index-(basic | anchor) in
> >> plugin.includes with something like parse-(html | tika |
> >> any23)|index-(basic | anchor | any23)
> >> 
> > 
> > No, you just add 'any23' to the list of plugins within the plugin.includes
> > property of nutch-site.xml
> > 
> > 
> >> Q: How do I expose the discovered microdata structure / items to end-user
> >> such as Solr? For example, what are the microdata items and do I need to
> >> map them to Solr in solrindex-mapping.xml?
> >> 
> > 
> > OK, so current configuration for the Any23 plugin, is to store extracted
> > structured data markup in the Nutch Metadata object with a key "
> > Any23-Triples". You can locate it using something like the ParserChekcer
> > tool provided via the 'nutch' script. Liekwise you can also locate it, as a
> > representation of what would be indexed, by using the IndexerChecker
> > tooling also provided within the 'nutch' script.
> > 
> > An example

Re: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?

[David Ferrero]

/a>



> On Feb 9, 2018, at 12:31 AM, David Ferrero <david.ferr...@zion.com> wrote:
> 
> Thank you for this information. Since this is very much related to Any23 and 
> microdata parsing, I’m going to ask what I believe is a related question but 
> keep this same thread so it will be organized in one place:
> 
> I noticed a lot of job boards such as dice.com, monster.com, etc use 
> http://schema.org/JobPosting information, however many seem to use  type="application/ld+json”>… rather than RDF.
> Summer 2017, Google announced structured data guidance for Jobs:
> https://developers.google.com/search/docs/data-types/job-posting
> and a testing tool to validate your HTML: 
> https://search.google.com/structured-data/testing-tool
> I verified a few sample listings on the above mentioned job boards on 
> google’s testing-tool and they validate OK.
> 
> So after looking at http://any23.apache.org/getting-started.html for the 
> supported extractors, I see Any23 mentions it supports JSON+LD input, so I 
> added this to nutch-site.xml to override the same property in 
> nutch-default.xml:
> 
> 
> any23.extractors
>     html-microdata,html-embedded-jsonld,rdf-jsonld
>     Comma-separated list of Any23 extractors (a list of 
> extractors is available here: 
> http://any23.apache.org/getting-started.html)
> 
> 
> I expected to see additional information from nutch parsechecker after adding 
> the jsonld extractors, however I see NO changes to Any23-Triples microdata 
> parsed. 
> 
> What might I be doing wrong?
> 
>> On Feb 8, 2018, at 11:17 AM, lewis john mcgibbney <lewi...@apache.org> wrote:
>> 
>> Hi David,
>> Answers inline
>> 
>> On Thu, Feb 8, 2018 at 9:19 AM, <user-digest-h...@nutch.apache.org> wrote:
>> 
>>> 
>>> From: David Ferrero <david.ferr...@zion.com>
>>> To: user@nutch.apache.org
>>> Cc:
>>> Bcc:
>>> Date: Thu, 8 Feb 2018 10:19:52 -0700
>>> Subject: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?
>>> Pull request #205 was recently merged into master branch for Nutch 1.x in
>>> fulfillment of NUTCH-1129 "microdata for Nutch 1.x"
>>> 
>>> I am new to nutch and solr and have just started crawling and indexing a
>>> few select websites. Using the built in html parsing/indexing, I am getting
>>> searchable fields like url, content, host, sometimes a title, and a few
>>> other indexing related fields like digest, boost, segment, and tstamp. That
>>> said, I realized very quickly that I need better results. While exploring
>>> the source of the website, I noticed references to schema.org and get
>>> excited by what I see. That’s how I stumbled upon NUTCH-1129.
>>> 
>>> I’ve built apache-nutch-1.15-SNAPSHOT which includes Any23 parser/indexer.
>>> 
>> 
>> Excellent.
>> 
>> 
>>> 
>>> Q: Now what?  How do I gain Any23 microdata parsing / indexing
>>> capabilities introduced by NUTCH-1129?
>>> Q: Do I replace parse-(html | tika)|index-(basic | anchor) in
>>> plugin.includes with something like parse-(html | tika |
>>> any23)|index-(basic | anchor | any23)
>>> 
>> 
>> No, you just add 'any23' to the list of plugins within the plugin.includes
>> property of nutch-site.xml
>> 
>> 
>>> Q: How do I expose the discovered microdata structure / items to end-user
>>> such as Solr? For example, what are the microdata items and do I need to
>>> map them to Solr in solrindex-mapping.xml?
>>> 
>> 
>> OK, so current configuration for the Any23 plugin, is to store extracted
>> structured data markup in the Nutch Metadata object with a key "
>> Any23-Triples". You can locate it using something like the ParserChekcer
>> tool provided via the 'nutch' script. Liekwise you can also locate it, as a
>> representation of what would be indexed, by using the IndexerChecker
>> tooling also provided within the 'nutch' script.
>> 
>> An example would be as follows, data is now indexed as follows (example
>> after crawling https://smartive.ch/jobs):
>> 
>> 
>>  "structured_data": [
>>{
>>  "node": "<https://smartive.ch/jobs>",
>>  "value": "\"IE-edge,chrome=1\"@de",
>>  "key": "<http://vocab.sindice.net/any23#X-UA-Compatible>",
>>  "short_key": "X-UA-Compatible"
>>},
>>{
>>

Re: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?

[David Ferrero]

Thank you for this information. Since this is very much related to Any23 and 
microdata parsing, I’m going to ask what I believe is a related question but 
keep this same thread so it will be organized in one place:

I noticed a lot of job boards such as dice.com , monster.com 
, etc use http://schema.org/JobPosting 
 information, however many seem to use 

Re: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?

[lewis john mcgibbney]

Hi David,
Answers inline

On Thu, Feb 8, 2018 at 9:19 AM, <user-digest-h...@nutch.apache.org> wrote:

>
> From: David Ferrero <david.ferr...@zion.com>
> To: user@nutch.apache.org
> Cc:
> Bcc:
> Date: Thu, 8 Feb 2018 10:19:52 -0700
> Subject: NUTCH-1129, Any23, microdata parsing, indexing, and extraction?
> Pull request #205 was recently merged into master branch for Nutch 1.x in
> fulfillment of NUTCH-1129 "microdata for Nutch 1.x"
>
> I am new to nutch and solr and have just started crawling and indexing a
> few select websites. Using the built in html parsing/indexing, I am getting
> searchable fields like url, content, host, sometimes a title, and a few
> other indexing related fields like digest, boost, segment, and tstamp. That
> said, I realized very quickly that I need better results. While exploring
> the source of the website, I noticed references to schema.org and get
> excited by what I see. That’s how I stumbled upon NUTCH-1129.
>
> I’ve built apache-nutch-1.15-SNAPSHOT which includes Any23 parser/indexer.
>

Excellent.


>
> Q: Now what?  How do I gain Any23 microdata parsing / indexing
> capabilities introduced by NUTCH-1129?
> Q: Do I replace parse-(html | tika)|index-(basic | anchor) in
> plugin.includes with something like parse-(html | tika |
> any23)|index-(basic | anchor | any23)
>

No, you just add 'any23' to the list of plugins within the plugin.includes
property of nutch-site.xml


> Q: How do I expose the discovered microdata structure / items to end-user
> such as Solr? For example, what are the microdata items and do I need to
> map them to Solr in solrindex-mapping.xml?
>

OK, so current configuration for the Any23 plugin, is to store extracted
structured data markup in the Nutch Metadata object with a key "
Any23-Triples". You can locate it using something like the ParserChekcer
tool provided via the 'nutch' script. Liekwise you can also locate it, as a
representation of what would be indexed, by using the IndexerChecker
tooling also provided within the 'nutch' script.

An example would be as follows, data is now indexed as follows (example
after crawling https://smartive.ch/jobs):


  "structured_data": [
{
  "node": "<https://smartive.ch/jobs>",
  "value": "\"IE-edge,chrome=1\"@de",
  "key": "<http://vocab.sindice.net/any23#X-UA-Compatible>",
  "short_key": "X-UA-Compatible"
},
{
  "node": "<https://smartive.ch/jobs>",
  "value": "\"Wir sind smartive \\u2014 eine dynamische,
innovative Schweizer Webentwicklungsagentur. Die Realisierung
zeitgem\\u00E4sser Webl\\u00F6sungen geh\\u00F6rt genauso zu unserer
Passion, wie die konstruktive Zusammenarbeit mit unseren Kundinnen und
Kunden.\"@de",
  "key": "<http://vocab.sindice.net/any23#description>",
  "short_key": "description"
},
{
  "node": "<https://smartive.ch/jobs>",
  "value": "\"width=device-width, initial-scale=1,
shrink-to-fit=no\"@de",
  "key": "<http://vocab.sindice.net/any23#viewport>",
  "short_key": "viewport"
},
{
  "node": "<https://smartive.ch/jobs>",
  "value": "\"width=device-width,initial-scale=1\"@de",
  "key": "<http://vocab.sindice.net/any23#viewport>",
  "short_key": "viewport"
},
{
  "node": "<https://smartive.ch/jobs>",
  "value": "\"ie=edge\"@de",
  "key": "<http://vocab.sindice.net/any23#x-ua-compatible>",
  "short_key": "x-ua-compatible"
}
  ],


Note from above, that the 'predicate' key field is very useful for quickly
filtering through, for example, Hotel Ratings, or something similar.


>
> I’d also be interested to learn how to point at a specific URL and see how
> nutch sees the microdata (best case), then learn how to leverage this into
> nutch and finally into solr.
>
>
See the tooling for ParserChecker and IndexerChecker as explained above.
Any further question, please let me know.
Lewis

NUTCH-1129, Any23, microdata parsing, indexing, and extraction?

[David Ferrero]

Pull request #205 was recently merged into master branch for Nutch 1.x in 
fulfillment of NUTCH-1129 "microdata for Nutch 1.x"

I am new to nutch and solr and have just started crawling and indexing a few 
select websites. Using the built in html parsing/indexing, I am getting 
searchable fields like url, content, host, sometimes a title, and a few other 
indexing related fields like digest, boost, segment, and tstamp. That said, I 
realized very quickly that I need better results. While exploring the source of 
the website, I noticed references to schema.org and get excited by what I see. 
That’s how I stumbled upon NUTCH-1129.

I’ve built apache-nutch-1.15-SNAPSHOT which includes Any23 parser/indexer. 

Q: Now what?  How do I gain Any23 microdata parsing / indexing capabilities 
introduced by NUTCH-1129? 
Q: Do I replace parse-(html | tika)|index-(basic | anchor) in plugin.includes 
with something like parse-(html | tika | any23)|index-(basic | anchor | any23)
Q: How do I expose the discovered microdata structure / items to end-user such 
as Solr? For example, what are the microdata items and do I need to map them to 
Solr in solrindex-mapping.xml?

I’d also be interested to learn how to point at a specific URL and see how 
nutch sees the microdata (best case), then learn how to leverage this into 
nutch and finally into solr. 

Thanks for any guidance.
-David