MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/01/00 through 01/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 169 2,571 2,740
Davis 467 62 529
Irvine 601 0 601
Los Angeles 133 1,281 1,414
Riverside 28 94 122
San Diego 334 1,100 1,434
San Francisco 115 0 115
Santa Barbara 155 667 822
Santa Cruz 145 219 364
Lawrence Berkeley 0 453 453
Lawrence Livermore 0 744 744
Los Alamos 0 11 11
Other - UC 14 384 398
Other-Network UC n/a 2,076 2,076
_______ ______ _____
2,161 9,662 11,823
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 7,614 18,494 157,852
INS90 1,602 2,912 19,962
INS85 1,101 2,011 16,116
INS80 796 1,446 11,400
INS69 710 1,565 12,412
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 265 651 4,776
2-4 a.m. 218 467 2,527
4-6 a.m. 262 558 4,219
6-8 a.m. 408 953 6,447
8-10 a.m. 1,127 2,612 20,825
10-12 a.m. 1,991 4,295 31,392
12-2 p.m. 1,855 4,294 35,224
2-4 p.m. 2,295 4,990 41,486
4-6 p.m. 1,831 3,964 35,748
6-8 p.m. 761 1,802 13,040
8-10 p.m. 451 959 10,998
10-12 p.m. 359 883 11,060
__________ __________ __________ _________________
Total: 11,823 26,428 217,742
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 372 5,753 6,125
Davis 1,424 142 1,566
Irvine 1,469 0 1,469
Los Angeles 286 2,724 3,010
Riverside 66 212 278
San Diego 997 2,398 3,395
San Francisco 304 0 304
Santa Barbara 366 1,617 1,983
Santa Cruz 298 494 792
Lawrence Berkeley 0 1,084 1,084
Lawrence Livermore 0 1,925 1,925
Los Alamos 0 26 26
Other - UC 6 953 959
Other-Network UC n/a 3,512 3,512
_______ ______ _____
5,588 20,840 26,428
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,288 42,451 44,739
Davis 20,957 1,866 22,823
Irvine 12,977 0 12,977
Los Angeles 2,510 24,470 26,980
Riverside 229 1,077 1,306
San Diego 5,222 17,763 22,985
San Francisco 1,892 0 1,892
Santa Barbara 2,854 17,612 20,466
Santa Cruz 2,635 4,458 7,093
Lawrence Berkeley 0 9,989 9,989
Lawrence Livermore 0 16,481 16,481
Los Alamos 0 176 176
Other - UC 7 6,506 6,513
Other-Network UC n/a 23,322 23,322
_______ ______ _____
51,571 166,171 217,742
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 6.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:56
Average session length (minutes:seconds) 12:18
Longest session recorded (minutes:seconds) 1256
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 585.1
Retrievals per search - standard deviation 7833.0
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 65.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 24,214 30.3%
DISPLAY (excluding automatic displays) 28,492 35.6%
BROWSE 24 0.0%
SELECT 16 0.0%
HELP 902 1.1%
EXPLAIN 1,283 1.6%
SET/RESET 6,600 8.3%
SHOW 313 0.4%
ADD ON (AND, OR, AND NOT) 2,205 2.8%
LOGON or LOGOFF 11,052 13.8%
COMMENT 0 0.0%
SAVE 1,417 1.8%
USE 39 0.0%
OTHER 3,450 4.3%
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 11,934 45.5% 2,877 24.1% 14 68.2 251.1
TITLE WORD 4,968 18.9% 1,960 39.4% 6 129.1 2263.3
EXACT TITLE 104 0.4% 47 45.2% 2 19.3 48.3
JOURNAL 739 2.8% 323 43.7% 178 3030.0 9654.4
EXACT JOURNAL 181 0.7% 94 51.9% 133 2713.4 7397.9
SUBJECT 1,270 4.8% 441 34.7% 24 610.5 2898.9
EXACT SUBJECT 300 1.1% 58 19.3% 48 990.5 3653.7
THESAURUS 29 0.1% 14 48.3% 48 3756.2 4779.9
EXACT THESAURUS 10 0.0% 2 20.0% 288 474.9 493.2
KEYWORD 5,000 19.1% 887 17.7% 29 1858.3 12272.7
SUBFILE 29 0.1% 2 6.9% 43 48.6 34.9
FORM 124 0.5% 21 16.9% 13 160.1 647.8
DATE 419 1.6% 169 40.3% 10 140.3 953.7
ADDED 43 0.2% 34 79.1% 15 18.6 15.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 250 1.0% 50 20.0% 19 198.3 572.9
CONFERENCE 115 0.4% 48 41.7% 122 619.0 1323.3
LANGUAGE 2 0.0% 1 50.0% 530 530.0 0.0
CHEMICAL NAME 128 0.5% 35 27.3% 41 755.9 1805.4
ISSN 4 0.0% 1 25.0% 338 747.3 774.8
ISBN 6 0.0% 3 50.0% 93 168.3 163.6
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 477 1.8% 85 17.8% 6 59.3 220.8
EXACT PE 74 0.3% 10 13.5% 4 47.3 221.7
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 21 0.1% 4 19.0% 13 56.6 113.2
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 2,322 9.8% 929 40.0% 7 115.1 1139.8
Single 21,493 90.2% 5,273 24.5% 18 667.8 6557.9
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 24 100% 6 25.0% 11 10.7 5.9
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.5%
SHORT 84.9%
LONG 2.2%
TAGS 0.5%
FIELDS 4.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. NS command - no next screen 45.1%
2. First word of command is invalid 27.3%
3. FIND command with invalid index name 7.3%
4. DISPLAY command contains invalid word 2.7%
5. PS command - no previous screen 1.8%
6. NS of SHOW/EXP command-no next screen 1.3%
7. Search term missing from search command 1.1%
8. Valid command at an inappropriate time 1.1%
9. Add-on search, no index name after verb 1.0%
10. DISPLAY command-record numbers too large 0.9%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.2%
2. INSPEC BACKFILES 11.1%
3. INSPEC DATABASES 11.0%
4. GUIDE (INSPEC DBS) 9.0%
5. LOCATE (INS/PSY DBS) 6.2%
6. INDEXES (INSPEC DBS) 5.5%
7. Unrecognized term 4.4%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.1%
9. DATABASES 3.8%
10. DISPLAY (INS/PSY DBS) 3.2%
11. All others 28.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.0%
2. First word of command is invalid 13.4%
3. FIND command with zero results 5.8%
4. FIND command with invalid index name 5.7%
5. DISPLAY command - middle of >1 screen 5.6%
6. NS command - no next screen 5.4%
7. FIND command retrieves >1 book 4.6%
8. DISPLAY command - last of >1 screen 4.0%
9. DISPLAY command-first of >1 screen 3.8%
10. DISPLAY command-complete in one screen 3.3%
11. All others 21.4%
Ten most frequent SHOW requests:
1. HISTORY 58.5%
2. MAIL STATUS 14.5%
3. SEARCH 7.4%
4. INSPEC NEWS 5.5%
5. INSPEC LOADING STATISTICS 5.1%
6. SETTINGS (INS/PSY DBS) 3.2%
7. SYSTEM NEWS 1.3%
8. DATABASES 1.0%
9. GLOSSARY 0.6%
10. UPDATE 0.6%
11. All others 2.3%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)