MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/08/01 through 12/14/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 196 200
Davis 95 1 96
Irvine 38 0 38
Los Angeles 1 103 104
Riverside 2 15 17
San Diego 42 67 109
San Francisco 10 0 10
Santa Barbara 2 38 40
Santa Cruz 0 36 36
Lawrence Berkeley 0 28 28
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 21 21
Other-Network UC n/a 415 415
_______ ______ _____
194 927 1,121
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 723 1,546 11,089
INS90 129 221 1,141
INS85 89 138 770
INS80 92 162 421
INS69 88 192 1,008
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 33 181
2-4 a.m. 13 26 301
4-6 a.m. 19 43 318
6-8 a.m. 30 61 325
8-10 a.m. 110 221 1,450
10-12 a.m. 239 472 2,340
12-2 p.m. 146 292 2,055
2-4 p.m. 232 459 2,779
4-6 p.m. 159 351 1,714
6-8 p.m. 76 166 1,203
8-10 p.m. 54 99 1,469
10-12 p.m. 28 36 294
__________ __________ __________ _________________
Total: 1,121 2,259 14,429
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 10 449 459
Davis 170 1 171
Irvine 109 0 109
Los Angeles 1 226 227
Riverside 4 33 37
San Diego 88 131 219
San Francisco 16 0 16
Santa Barbara 13 85 98
Santa Cruz 0 65 65
Lawrence Berkeley 0 97 97
Lawrence Livermore 0 27 27
Los Alamos 0 0 0
Other - UC 0 50 50
Other-Network UC n/a 684 684
_______ ______ _____
411 1,848 2,259
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 3,147 3,163
Davis 1,218 0 1,218
Irvine 776 0 776
Los Angeles 0 1,656 1,656
Riverside 6 130 136
San Diego 490 1,365 1,855
San Francisco 44 0 44
Santa Barbara 13 565 578
Santa Cruz 0 758 758
Lawrence Berkeley 0 1,018 1,018
Lawrence Livermore 0 98 98
Los Alamos 0 0 0
Other - UC 0 527 527
Other-Network UC n/a 2,602 2,602
_______ ______ _____
2,563 11,866 14,429
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 2.0
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) 7:54
Average session length (minutes:seconds) 12:12
Longest session recorded (minutes:seconds) 280:50
Average number of searches completed per session 2.0
Retrievals per search - median 4.0
Retrievals per search - average 322.8
Retrievals per search - standard deviation 3042.2
Percent of searches completed with 0 results 30.8%
Percent of searches entered that are long 6.5%
Percent of long searches completed
(includes partial results) 82.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,007 30.9%
DISPLAY (excluding automatic displays) 2,211 34.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 32 0.5%
EXPLAIN 75 1.2%
SET/RESET 703 10.8%
SHOW 9 0.1%
ADD ON (AND, OR, AND NOT) 252 3.9%
LOGON or LOGOFF 909 14.0%
COMMENT 0 0.0%
SAVE 42 0.6%
USE 1 0.0%
OTHER 257 4.0%
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 960 42.5% 263 27.4% 14 72.2 356.3
TITLE WORD 547 24.2% 299 54.7% 6 85.8 333.5
EXACT TITLE 7 0.3% 6 85.7% 1 1.0 0.0
JOURNAL 44 1.9% 21 47.7% 141 4112.9 12893.3
EXACT JOURNAL 44 1.9% 28 63.6% 361 1604.1 4627.0
SUBJECT 86 3.8% 11 12.8% 166 1977.6 4253.8
EXACT SUBJECT 4 0.2% 0 0.0% 939 1661.3 2242.9
THESAURUS 1 0.0% 0 0.0% 1,957 1957.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 347 15.4% 47 13.5% 29 1251.5 6885.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 36 1.6% 9 25.0% 4 22.9 51.3
DATE 75 3.3% 17 22.7% 27 446.8 1024.5
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. 13 0.6% 1 7.7% 6 38.0 87.6
CONFERENCE 8 0.4% 4 50.0% 141 139.3 90.5
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 2 0.1% 1 50.0% 69 69.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 72 3.2% 13 18.1% 5 26.4 66.1
EXACT PE 9 0.4% 1 11.1% 4 6.8 5.9
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 2 0.1% 1 50.0% 18 18.0 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 270 13.7% 105 38.9% 5 239.7 885.0
Single 1,706 86.3% 510 29.9% 19 560.8 4116.8
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 2.7%
SHORT 81.3%
LONG 3.1%
TAGS 0.2%
FIELDS 5.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 42.8%
2. First word of command is invalid 23.8%
3. Max. # of ports to a Z39 db are in use 10.0%
4. FIND command with invalid index name 4.0%
5. DISPLAY command contains invalid word 2.7%
6. Invalid SET DB INS command issued 1.5%
7. Single letter keyword search 1.3%
8. Valid command at an inappropriate time 1.0%
9. PS command - no previous screen 1.0%
10. DISPLAY command - no FIND results 0.9%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 20.0%
2. INSPEC DATABASES 16.0%
3. INSPEC BACKFILES 12.0%
4. GUIDE (INSPEC DBS) 10.7%
5. INDEXES (INSPEC DBS) 5.3%
6. MAIL 4.0%
7. PUBLICATION TYPES (INSPEC DBS) 4.0%
8. LOCATE (INS/PSY DBS) 2.7%
9. I051 2.7%
10. DISPLAY (INS/PSY DBS) 2.7%
11. All others 20.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.0%
2. DISPLAY command - middle of >1 screen 8.4%
3. DISPLAY command - last of >1 screen 8.4%
4. NS command - no next screen 6.5%
5. DISPLAY command-first of >1 screen 6.5%
6. First word of command is invalid 5.6%
7. FIND command with zero results 5.6%
8. FIND command retrieves >1 book 5.6%
9. 850 5.6%
10. Add-on without index name after verb 2.8%
11. All others 15.9%
Ten most frequent SHOW requests:
1. HISTORY 88.9%
2. DATABASES 11.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)