MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/22/01 through 12/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 39 39
Davis 75 2 77
Irvine 22 0 22
Los Angeles 0 31 31
Riverside 0 2 2
San Diego 20 52 72
San Francisco 10 0 10
Santa Barbara 0 20 20
Santa Cruz 0 8 8
Lawrence Berkeley 0 12 12
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 3 3
Other-Network UC n/a 192 192
_______ ______ _____
127 361 488
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 280 576 4,170
INS90 64 115 841
INS85 52 75 494
INS80 50 93 229
INS69 42 102 1,058
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 19 106
2-4 a.m. 12 27 279
4-6 a.m. 1 5 12
6-8 a.m. 7 26 239
8-10 a.m. 29 59 470
10-12 a.m. 143 229 1,054
12-2 p.m. 75 169 1,080
2-4 p.m. 84 172 1,086
4-6 p.m. 91 170 1,059
6-8 p.m. 21 40 833
8-10 p.m. 8 29 226
10-12 p.m. 5 16 348
__________ __________ __________ _________________
Total: 488 961 6,792
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 110 110
Davis 150 4 154
Irvine 48 0 48
Los Angeles 0 66 66
Riverside 0 7 7
San Diego 38 109 147
San Francisco 20 0 20
Santa Barbara 0 32 32
Santa Cruz 0 13 13
Lawrence Berkeley 0 27 27
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 2 2
Other-Network UC n/a 335 335
_______ ______ _____
256 705 961
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 776 776
Davis 1,319 30 1,349
Irvine 730 0 730
Los Angeles 0 569 569
Riverside 0 21 21
San Diego 198 1,023 1,221
San Francisco 22 0 22
Santa Barbara 0 165 165
Santa Cruz 0 45 45
Lawrence Berkeley 0 295 295
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 15 15
Other-Network UC n/a 1,584 1,584
_______ ______ _____
2,269 4,523 6,792
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 1.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 11:42
Average session length (minutes:seconds) 22:08
Longest session recorded (minutes:seconds) 866:18
Average number of searches completed per session 1.9
Retrievals per search - median 3.0
Retrievals per search - average 370.2
Retrievals per search - standard deviation 8554.8
Percent of searches completed with 0 results 31.2%
Percent of searches entered that are long 7.8%
Percent of long searches completed
(includes partial results) 76.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 879 29.5%
DISPLAY (excluding automatic displays) 1,159 38.9%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 18 0.6%
EXPLAIN 40 1.3%
SET/RESET 335 11.2%
SHOW 3 0.1%
ADD ON (AND, OR, AND NOT) 82 2.8%
LOGON or LOGOFF 322 10.8%
COMMENT 0 0.0%
SAVE 35 1.2%
USE 0 0.0%
OTHER 107 3.6%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 475 47.3% 134 28.2% 10 61.8 217.6
TITLE WORD 253 25.2% 107 42.3% 5 38.4 93.8
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
JOURNAL 42 4.2% 14 33.3% 8 292.3 1039.5
EXACT JOURNAL 7 0.7% 2 28.6% 4 3.6 1.5
SUBJECT 13 1.3% 3 23.1% 87 305.7 479.8
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 170 16.9% 46 27.1% 22 2489.3 23542.4
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 10 1.0% 2 20.0% 11 17.3 25.4
DATE 11 1.1% 3 27.3% 3 37.8 93.9
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 5 0.5% 0 0.0% 5 38.8 61.5
CONFERENCE 2 0.2% 2 100% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 2 0.2% 0 0.0% 2 1.5 0.7
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 13 1.3% 4 30.8% 4 85.3 233.2
EXACT PE 1 0.1% 0 0.0% 9 9.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 138 16.0% 49 35.5% 3 13.4 33.7
Single 727 84.0% 218 30.0% 14 679.1 11634.2
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.3%
SHORT 87.2%
LONG 1.0%
TAGS 0.1%
FIELDS 6.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 48.2%
2. First word of command is invalid 27.7%
3. FIND command with invalid index name 7.1%
4. DISPLAY command contains invalid word 2.0%
5. Add-on search, no index name after verb 1.6%
6. SET DB command entered w/o modifier 1.2%
7. Search term missing from search command 1.2%
8. Valid command at an inappropriate time 0.8%
9. DISPLAY command - no FIND results 0.8%
10. DISPLAY command-record numbers too large 0.8%
11. All others 8.7%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 17.5%
2. INSPEC BACKFILES 15.0%
3. FIND (INSPEC DBS) 15.0%
4. FIND (INSPEC DBS) 15.0%
5. GUIDE (INSPEC DBS) 7.5%
6. PUBLICATION TYPES (INSPEC DBS) 5.0%
7. INDEXES (INSPEC DBS) 5.0%
8. LOCATE (INS/PSY DBS) 2.5%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 2.5%
10. I030 2.5%
11. All others 12.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.9%
2. DISPLAY command - last of >1 screen 8.6%
3. DISPLAY command-complete in one screen 6.9%
4. DISPLAY command-first of >1 screen 6.9%
5. Valid command at an inappropriate time 5.2%
6. FIND command with invalid index name 5.2%
7. FIND command with zero results 5.2%
8. FIND command retrieves >1 book 5.2%
9. DISPLAY command - middle of >1 screen 5.2%
10. Multi-index search with zero results 5.2%
11. All others 20.7%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 33.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)