MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/01/01 through 09/07/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 348 354
Davis 39 0 39
Irvine 49 0 49
Los Angeles 0 128 128
Riverside 1 8 9
San Diego 39 125 164
San Francisco 18 0 18
Santa Barbara 3 35 38
Santa Cruz 3 32 35
Lawrence Berkeley 0 23 23
Lawrence Livermore 0 14 14
Los Alamos 0 0 0
Other - UC 2 21 23
Other-Network UC n/a 461 461
_______ ______ _____
160 1,195 1,355
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 868 1,863 13,491
INS90 190 370 2,080
INS85 116 202 679
INS80 102 170 891
INS69 79 201 1,971
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 27 71 562
2-4 a.m. 24 108 759
4-6 a.m. 29 60 269
6-8 a.m. 86 186 1,044
8-10 a.m. 144 316 2,116
10-12 a.m. 298 586 3,788
12-2 p.m. 203 408 2,607
2-4 p.m. 203 395 2,899
4-6 p.m. 211 400 2,886
6-8 p.m. 70 159 1,375
8-10 p.m. 46 84 464
10-12 p.m. 14 33 343
__________ __________ __________ _________________
Total: 1,355 2,806 19,112
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 5 767 772
Davis 97 0 97
Irvine 80 0 80
Los Angeles 0 236 236
Riverside 2 47 49
San Diego 68 323 391
San Francisco 36 0 36
Santa Barbara 3 113 116
Santa Cruz 6 85 91
Lawrence Berkeley 0 46 46
Lawrence Livermore 0 40 40
Los Alamos 0 0 0
Other - UC 6 42 48
Other-Network UC n/a 804 804
_______ ______ _____
303 2,503 2,806
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 48 5,866 5,914
Davis 560 0 560
Irvine 475 0 475
Los Angeles 0 798 798
Riverside 0 162 162
San Diego 268 3,552 3,820
San Francisco 265 0 265
Santa Barbara 4 864 868
Santa Cruz 220 603 823
Lawrence Berkeley 0 405 405
Lawrence Livermore 0 510 510
Los Alamos 0 0 0
Other - UC 40 953 993
Other-Network UC n/a 3,519 3,519
_______ ______ _____
1,880 17,232 19,112
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 8.3
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) 8:07
Average session length (minutes:seconds) 14:18
Longest session recorded (minutes:seconds) 733:53
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 1377.4
Retrievals per search - standard deviation 23172
Percent of searches completed with 0 results 30.9%
Percent of searches entered that are long 5.4%
Percent of long searches completed
(includes partial results) 78.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,537 31.1%
DISPLAY (excluding automatic displays) 2,828 34.6%
BROWSE 6 0.1%
SELECT 0 0.0%
HELP 55 0.7%
EXPLAIN 84 1.0%
SET/RESET 790 9.7%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 269 3.3%
LOGON or LOGOFF 1,188 14.5%
COMMENT 0 0.0%
SAVE 92 1.1%
USE 1 0.0%
OTHER 307 3.8%
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 1,266 44.1% 309 24.4% 13 79.7 336.3
TITLE WORD 587 20.4% 328 55.9% 3 25.6 85.5
EXACT TITLE 24 0.8% 19 79.2% 5 79.8 144.8
JOURNAL 62 2.2% 39 62.9% 9 264.1 843.8
EXACT JOURNAL 56 2.0% 32 57.1% 92 400.6 987.1
SUBJECT 96 3.3% 39 40.6% 17 497.5 1890.4
EXACT SUBJECT 3 0.1% 0 0.0% 2 5643.0 9771.4
THESAURUS 3 0.1% 0 0.0% 33 4081.7 7034.2
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 510 17.8% 67 13.1% 29 4427.8 41166.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 6 0.2% 0 0.0% 108 114.0 98.9
DATE 90 3.1% 14 15.6% 22 177.0 797.8
ADDED 11 0.4% 6 54.5% 9 10.4 3.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 55 1.9% 22 40.0% 10 404.7 783.1
CONFERENCE 3 0.1% 1 33.3% 28,805 28805.0 40719.5
LANGUAGE 1 0.0% 0 0.0% 21 21.0 0.0
CHEMICAL NAME 2 0.1% 0 0.0% 336 336.0 466.7
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 92 3.2% 17 18.5% 5 59.9 172.7
EXACT PE 3 0.1% 1 33.3% 33 32.5 7.8
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 1 0.0% 0 0.0% 3 3.0 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 351 14.0% 121 34.5% 8 118.2 924.8
Single 2,156 86.0% 650 30.1% 17 1430.3 22449.2
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 6 100% 5 83.3% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 84.5%
LONG 2.3%
TAGS 0.0%
FIELDS 6.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.0%
COMMENTS 0.0%
Other 0.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 48.5%
2. First word of command is invalid 26.3%
3. FIND command with invalid index name 5.6%
4. Max. # of ports to a Z39 db are in use 2.6%
5. DISPLAY command contains invalid word 2.1%
6. Search term missing from search command 1.5%
7. PS command - no previous screen 1.3%
8. Valid command at an inappropriate time 1.1%
9. DISPLAY command - no FIND results 1.1%
10. Add-on search, no index name after verb 1.1%
11. All others 8.9%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.1%
2. INSPEC DATABASES 11.9%
3. GUIDE (INSPEC DBS) 10.7%
4. DATABASES 8.3%
5. MAIL 6.0%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 6.0%
7. LOCATE (INS/PSY DBS) 4.8%
8. DISPLAY (INS/PSY DBS) 4.8%
9. INDEXES (INSPEC DBS) 3.6%
10. 1242 3.6%
11. All others 27.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.9%
2. First word of command is invalid 12.2%
3. FIND command with zero results 8.6%
4. NS command - no next screen 7.9%
5. DISPLAY command-first of >1 screen 7.9%
6. FIND command retrieves >1 book 5.0%
7. FIND command with invalid index name 3.6%
8. DISPLAY command-complete in one screen 3.6%
9. Multi-index search with zero results 3.6%
10. DISPLAY command - middle of >1 screen 2.9%
11. All others 18.7%
Ten most frequent SHOW requests:
1. HISTORY 63.2%
2. SEARCH 15.8%
3. INSPEC NEWS 10.5%
4. SETTINGS (INS/PSY DBS) 5.3%
5. INSPEC LOADING STATISTICS 5.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)