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E-mail Mining: Extracting Collaborative Activities from E-Mail Akiko Murakami Koichi Takeda.

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Presentation on theme: "E-mail Mining: Extracting Collaborative Activities from E-Mail Akiko Murakami Koichi Takeda."— Presentation transcript:

1 Mining: Extracting Collaborative Activities from Akiko Murakami Koichi Takeda

2 Contents Overview of our Text mining work Text Mining for individual text Text Mining for discussion text Text Mining for Discussion on mining Pair-mail Three levels of mining targets Preliminary study of mining

3 Text Mining Text mining has become one of the most influential natural language processing research. Text mining is extended to various domain CRM (Customer Relationship Management) Biomedical domain Web pages Discussion records Patent

4 Text Mining for Individual Text Call Taker: James Date: Aug. 30, 2002 Duration: 10 min. CustomerID: ADC00123 Q: cust sys has stopped working. A: checked cust bios and it need updated. … Unstructured Data Structured Data [Call Taker] James [Date] 2002/08/30 [Duration] 10 min. [CustomerID] ADC00123 [Noun] Customer [Software] BIOS [Subj...Verb] customer system..stop [SW..Problem] BIOS..need Original DataMeta Data Linguistic Analysis Tagging Dependency Analysis Named Entity Extraction Intention Analysis Category Dictionary Synonym Dictionary CategoryItem Visualization & Interactive Mining Mining IBM TAKMI (Nasukawa, Nagano,1999) Mining target: individual text Mining unit: >texts >category labeled items extracted from text using NLP

5 TAKMI Client GUI Mining History Document List Distribution Analysis View Other Mining Views

6 Text Mining for Discussion Records Mail A Mail B Mail C Quotation from Mail A Comment on the quotation Quotation from Mail B Comment on the quotation Thread Summary Discussion Mining (Murakami, Nagao,2001) Linguistic Annotation Mining target: discussion records Mining unit: >summarized texts based on thread structure >mail graph structures

7 Discussion Mining

8 Text Mining for Private Data Various structured data as mail messages Sender(From), Receiver(To,cc.,bcc.), Time Stamp, Mail unique ID, Referential ID, etc. Independent and relational documents are mixed in data. F.Y.I., invitation, CFP etc. Mailing List, inquiry, request etc.

9 Properties of messages Private Mail without c.c. Private Mail with c.c. Private Public Independent Relative F.Y.I Spam memo Mailing List Schedule Discussion Mining Mining Text Mining Discussion, BBS,,, Discourse Paper, Report,,,

10 mining Not suitable for annotation Need to consider scalability Shorter threads than discussion records. New concept of the mining target is required. AND Lack of information like discourse structure participants are small than discussion

11 Pair-mail Pair-mail is formed by reference link, reply-to information. Each reply-to link forms a pair-mail. It contains reference type information based on previous/next mail contents Question/Answer, Imperative/Action, Action/Regards... etc reply-to

12 Mining Target -mining units- Three levels of mining target in mail data 1 st level : an individual as a single substance 2 nd level : pair-mail a pair of linked by reply-to relations. 3 rd level : thread a chain of messages (threads) Scalability High Low

13 Preliminary study

14 Examples of mail mining Mail data for one month (May, 2003) Business related mails discussion with co-author of my paper meeting invitations mail magazines and mailing list messages are received in another account Including my sending messages Volume: 380mail messages (19 mail messages / a working day)

15 Thread Properties Extracting thread structure based on the header information (Reference ID). Average length of threads 1.60 mail message(238 threads). but, most of mail message are individual type Average length without individual mail is 3.09 mail messages(68 threads). Most threads are shorter than 3 messages Long thread (over 4 messages) is only 16 The average of participant number of long thread (more than 4 messages) is 3.5.

16 Changes in numbers of thread participants Expansion of participants number general information No member in c.c. field Special topics in sender and receiver Consider the pair mail properties (ex. the shift of the number of participants), it helps to extract the relevant information.

17 Pair-mail Extraction Extracted pair-mail contains some expression in second mail ex. gratitude expression such as Thank you. These pair-mails contain some relation to the expression in the example, gratitude expressions is a result of some action in the previous mail thank you... Action

18 Result of pair-mail extraction Most of the expressions are found in previous mail as attachment - data cleansing are required In the rest of results, we can find the action described in previous mail. About 40% is ones gratitude for actions described in mail (8% is for information) and 10 % is for real world action. 5% is platitudinous expression. Extracted 106 pair-mail

19 Summary Text Mining for Text Mining for individual and relational text Introduce the new mining unit Three levels of mining targets single mail. pair-mail. thread Preliminary study of mining Pair-mail information is important in threads. Needs data cleansing. Remove signature, attachment,,,

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