MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/01/01 through 03/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 33 1,596 1,629
Davis 219 12 231
Irvine 362 0 362
Los Angeles 20 641 661
Riverside 11 44 55
San Diego 287 734 1,021
San Francisco 85 0 85
Santa Barbara 38 262 300
Santa Cruz 25 179 204
Lawrence Berkeley 0 329 329
Lawrence Livermore 0 215 215
Los Alamos 0 0 0
Other - UC 6 226 232
Other-Network UC n/a 1,660 1,660
_______ ______ _____
1,086 5,898 6,984
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 4,517 10,772 87,991
INS90 933 1,735 10,308
INS85 611 1,135 5,609
INS80 477 928 3,823
INS69 446 1,003 5,647
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 150 339 2,573
2-4 a.m. 109 325 2,300
4-6 a.m. 127 338 2,382
6-8 a.m. 285 750 7,330
8-10 a.m. 833 1,841 10,954
10-12 a.m. 1,108 2,583 20,681
12-2 p.m. 1,009 2,359 15,972
2-4 p.m. 1,324 2,737 18,866
4-6 p.m. 1,011 2,142 14,663
6-8 p.m. 544 1,133 9,590
8-10 p.m. 248 544 3,650
10-12 p.m. 236 482 4,417
__________ __________ __________ _________________
Total: 6,984 15,573 113,378
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 62 3,589 3,651
Davis 554 19 573
Irvine 957 0 957
Los Angeles 29 1,556 1,585
Riverside 25 131 156
San Diego 847 1,585 2,432
San Francisco 222 0 222
Santa Barbara 82 610 692
Santa Cruz 47 373 420
Lawrence Berkeley 0 822 822
Lawrence Livermore 0 536 536
Los Alamos 0 0 0
Other - UC 16 506 522
Other-Network UC n/a 3,005 3,005
_______ ______ _____
2,841 12,732 15,573
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 392 26,406 26,798
Davis 4,428 40 4,468
Irvine 11,101 0 11,101
Los Angeles 122 9,013 9,135
Riverside 62 823 885
San Diego 3,338 11,328 14,666
San Francisco 2,084 0 2,084
Santa Barbara 191 5,850 6,041
Santa Cruz 361 2,728 3,089
Lawrence Berkeley 0 7,559 7,559
Lawrence Livermore 0 6,044 6,044
Los Alamos 0 0 0
Other - UC 106 3,104 3,210
Other-Network UC n/a 18,298 18,298
_______ ______ _____
22,185 91,193 113,378
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 5.8
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
_________________________________________
Median session length (minutes:seconds) 7:37
Average session length (minutes:seconds) 12:47
Longest session recorded (minutes:seconds) 511:15
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1054.5
Retrievals per search - standard deviation 18055
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 72.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 14,043 31.5%
DISPLAY (excluding automatic displays) 15,588 34.9%
BROWSE 34 0.1%
SELECT 0 0.0%
HELP 274 0.6%
EXPLAIN 508 1.1%
SET/RESET 4,121 9.2%
SHOW 163 0.4%
ADD ON (AND, OR, AND NOT) 1,530 3.4%
LOGON or LOGOFF 6,080 13.6%
COMMENT 0 0.0%
SAVE 447 1.0%
USE 21 0.0%
OTHER 1,823 4.1%
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 6,904 44.5% 1,700 24.6% 15 79.9 304.1
TITLE WORD 3,272 21.1% 1,451 44.3% 5 112.5 803.4
EXACT TITLE 135 0.9% 75 55.6% 2 11.0 31.2
JOURNAL 514 3.3% 212 41.2% 32 2496.4 11077.9
EXACT JOURNAL 139 0.9% 67 48.2% 100 2398.8 5258.3
SUBJECT 378 2.4% 110 29.1% 34 1077.6 3398.9
EXACT SUBJECT 33 0.2% 6 18.2% 18 2530.3 5674.3
THESAURUS 21 0.1% 4 19.0% 20 2945.9 4910.7
EXACT THESAURUS 4 0.0% 0 0.0% 1,379 1395.8 411.7
KEYWORD 2,913 18.8% 490 16.8% 31 3310.1 32321.8
SUBFILE 3 0.0% 1 33.3% 10 10.0 2.8
FORM 93 0.6% 10 10.8% 18 108.0 243.7
DATE 218 1.4% 67 30.7% 11 91.5 266.4
ADDED 47 0.3% 24 51.1% 19 25.6 22.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 160 1.0% 44 27.5% 18 127.4 466.5
CONFERENCE 33 0.2% 15 45.5% 504 3929.3 13426.2
LANGUAGE 5 0.0% 0 0.0% 245 547.2 953.4
CHEMICAL NAME 88 0.6% 26 29.5% 20 365.5 1229.3
ISSN 9 0.1% 1 11.1% 4,530 4016.5 3380.7
ISBN 2 0.0% 0 0.0% 97 97.0 5.7
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 476 3.1% 87 18.3% 6 357.7 5885.5
EXACT PE 53 0.3% 7 13.2% 5 47.8 149.8
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 19 0.1% 4 21.1% 45 481.3 821.7
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 1,593 11.5% 586 36.8% 6 102.9 786.2
Single 12,269 88.5% 3,220 26.2% 19 1114.5 16982.1
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 34 100% 16 47.1% 2 3.7 5.4
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.7%
SHORT 83.0%
LONG 2.9%
TAGS 0.4%
FIELDS 4.1%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 4.8%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 41.8%
2. First word of command is invalid 30.3%
3. FIND command with invalid index name 6.4%
4. DISPLAY command contains invalid word 2.8%
5. Max. # of ports to a Z39 db are in use 2.7%
6. Search term missing from search command 1.8%
7. PS command - no previous screen 1.5%
8. NS of SHOW/EXP command-no next screen 1.3%
9. DISPLAY command-record numbers too large 1.0%
10. DISPLAY command - no FIND results 1.0%
11. All others 9.5%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.4%
2. INSPEC DATABASES 13.8%
3. GUIDE (INSPEC DBS) 10.2%
4. INSPEC BACKFILES 9.1%
5. INDEXES (INSPEC DBS) 6.7%
6. LOCATE (INS/PSY DBS) 4.9%
7. DATABASES 4.9%
8. Unrecognized term 4.3%
9. MAIL 3.1%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.0%
11. All others 25.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.0%
2. First word of command is invalid 9.5%
3. DISPLAY command - middle of >1 screen 6.6%
4. FIND command with zero results 6.1%
5. DISPLAY command-first of >1 screen 5.9%
6. FIND command retrieves >1 book 5.0%
7. DISPLAY command - last of >1 screen 4.7%
8. NS command - no next screen 4.3%
9. FIND command with invalid index name 4.3%
10. DISPLAY command-complete in one screen 4.2%
11. All others 20.2%
Ten most frequent SHOW requests:
1. HISTORY 62.0%
2. INSPEC LOADING STATISTICS 6.1%
3. SEARCH 6.1%
4. MAIL STATUS 6.1%
5. INSPEC NEWS 5.5%
6. SYSTEM NEWS 3.7%
7. GLOSSARY 3.1%
8. SETTINGS (INS/PSY DBS) 1.8%
9. LIBRARY SETTINGS 1.2%
10. MAIL SETTINGS 1.2%
11. All others 3.1%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)