MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 11/01/99 through 11/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 350 3,515 3,865
Davis 363 48 411
Irvine 899 0 899
Los Angeles 97 1,419 1,516
Riverside 70 109 179
San Diego 294 1,293 1,587
San Francisco 123 0 123
Santa Barbara 192 1,336 1,528
Santa Cruz 185 302 487
Lawrence Berkeley 0 452 452
Lawrence Livermore 0 733 733
Los Alamos 0 0 0
Other - UC 12 376 388
Other-Network UC n/a 2,202 2,202
_______ ______ _____
2,585 11,785 14,370
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 8,832 22,243 204,849
INS90 2,002 3,606 32,858
INS85 1,342 2,355 21,340
INS80 1,096 1,917 19,165
INS69 1,098 2,262 53,578
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 322 773 5,812
2-4 a.m. 245 564 4,218
4-6 a.m. 213 551 4,484
6-8 a.m. 406 994 14,182
8-10 a.m. 1,510 3,297 38,300
10-12 a.m. 2,478 5,566 53,751
12-2 p.m. 2,159 4,738 32,319
2-4 p.m. 2,693 6,036 61,108
4-6 p.m. 2,075 4,939 44,042
6-8 p.m. 1,237 2,300 52,746
8-10 p.m. 610 1,547 12,113
10-12 p.m. 422 1,078 8,715
__________ __________ __________ _________________
Total: 14,370 32,383 331,790
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 864 8,208 9,072
Davis 931 103 1,034
Irvine 2,306 0 2,306
Los Angeles 210 3,079 3,289
Riverside 140 284 424
San Diego 918 3,260 4,178
San Francisco 260 0 260
Santa Barbara 453 2,317 2,770
Santa Cruz 475 785 1,260
Lawrence Berkeley 0 926 926
Lawrence Livermore 0 1,763 1,763
Los Alamos 0 0 0
Other - UC 70 926 996
Other-Network UC n/a 4,105 4,105
_______ ______ _____
6,627 25,756 32,383
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,007 61,573 66,580
Davis 7,100 286 7,386
Irvine 19,916 0 19,916
Los Angeles 1,938 31,074 33,012
Riverside 705 2,866 3,571
San Diego 4,866 21,480 26,346
San Francisco 1,539 0 1,539
Santa Barbara 3,750 106,724 110,474
Santa Cruz 3,292 5,922 9,214
Lawrence Berkeley 0 9,931 9,931
Lawrence Livermore 0 13,298 13,298
Los Alamos 0 0 0
Other - UC 331 6,536 6,867
Other-Network UC n/a 23,656 23,656
_______ ______ _____
48,444 283,346 331,790
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 6.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 6:59
Average session length (minutes:seconds) 11:26
Longest session recorded (minutes:seconds) 336:12
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 567.3
Retrievals per search - standard deviation 7386.2
Percent of searches completed with 0 results 26.3%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 65.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 29,527 30.9%
DISPLAY (excluding automatic displays) 32,951 34.5%
BROWSE 8 0.0%
SELECT 1 0.0%
HELP 1,106 1.2%
EXPLAIN 1,705 1.8%
SET/RESET 8,048 8.4%
SHOW 385 0.4%
ADD ON (AND, OR, AND NOT) 2,856 3.0%
LOGON or LOGOFF 13,347 14.0%
COMMENT 0 0.0%
SAVE 1,614 1.7%
USE 57 0.1%
OTHER 3,929 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 13,668 42.2% 3,299 24.1% 15 69.8 265.0
TITLE WORD 5,567 17.2% 2,227 40.0% 7 75.3 605.9
EXACT TITLE 141 0.4% 85 60.3% 2 28.2 88.7
JOURNAL 847 2.6% 360 42.5% 82 2358.2 8196.3
EXACT JOURNAL 442 1.4% 148 33.5% 145 791.6 3991.1
SUBJECT 1,529 4.7% 499 32.6% 20 360.8 1580.1
EXACT SUBJECT 70 0.2% 18 25.7% 24 1875.1 3903.9
THESAURUS 32 0.1% 6 18.8% 17 2206.2 3703.5
EXACT THESAURUS 35 0.1% 9 25.7% 145 265.8 386.0
KEYWORD 7,294 22.5% 1,434 19.7% 30 1907.0 13619.1
SUBFILE 31 0.1% 4 12.9% 12 1450.3 7375.6
FORM 169 0.5% 43 25.4% 17 120.6 389.0
DATE 1,000 3.1% 317 31.7% 20 129.3 688.8
ADDED 49 0.2% 26 53.1% 8 11.7 12.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 353 1.1% 103 29.2% 13 158.4 579.4
CONFERENCE 166 0.5% 65 39.2% 150 7432.2 37947.9
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 121 0.4% 43 35.5% 19 330.2 1012.1
ISSN 6 0.0% 3 50.0% 1,262 1075.3 986.3
ISBN 10 0.0% 2 20.0% 138 152.3 133.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 697 2.2% 152 21.8% 8 253.5 1554.1
EXACT PE 106 0.3% 22 20.8% 4 12.6 23.6
RPE 1 0.0% 1 100% 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 25 0.1% 12 48.0% 18 27.7 37.9
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 3,179 10.9% 1,195 37.6% 7 157.2 1385.1
Single 25,875 89.1% 6,440 24.9% 18 748.3 8143.4
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 8 100% 3 37.5% 4 3.6 2.1
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 87.1%
LONG 1.7%
TAGS 0.8%
FIELDS 3.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.0%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.9%
Ten most frequent errors:
1. NS command - no next screen 43.9%
2. First word of command is invalid 25.8%
3. FIND command with invalid index name 6.8%
4. DISPLAY command - no FIND results 3.0%
5. DISPLAY command contains invalid word 2.4%
6. PS command - no previous screen 2.0%
7. 461 1.9%
8. NS of SHOW/EXP command-no next screen 1.4%
9. Search term missing from search command 1.4%
10. Valid command at an inappropriate time 1.1%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.6%
2. INSPEC DATABASES 12.7%
3. GUIDE (INSPEC DBS) 9.9%
4. INSPEC BACKFILES 9.5%
5. LOCATE (INS/PSY DBS) 6.1%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 5.4%
7. INDEXES (INSPEC DBS) 5.4%
8. Unrecognized term 4.5%
9. DATABASES 4.1%
10. MAIL 2.9%
11. All others 25.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.1%
2. First word of command is invalid 14.7%
3. FIND command with zero results 7.1%
4. DISPLAY command - middle of >1 screen 6.1%
5. FIND command with invalid index name 5.8%
6. NS command - no next screen 5.3%
7. FIND command retrieves >1 book 5.0%
8. DISPLAY command-first of >1 screen 4.0%
9. DISPLAY command-complete in one screen 3.6%
10. DISPLAY command - last of >1 screen 3.4%
11. All others 19.0%
Ten most frequent SHOW requests:
1. HISTORY 63.9%
2. MAIL STATUS 9.8%
3. SEARCH 8.4%
4. GLOSSARY 3.2%
5. SETTINGS (INS/PSY DBS) 2.9%
6. INSPEC NEWS 2.6%
7. INSPEC LOADING STATISTICS 1.6%
8. SYSTEM NEWS 1.3%
9. UPDATE 1.3%
10. DATABASES 1.3%
11. All others 3.7%