MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/01/99 through 09/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 273 3,377 3,650
Davis 404 71 475
Irvine 830 0 830
Los Angeles 131 1,335 1,466
Riverside 48 121 169
San Diego 431 1,236 1,667
San Francisco 112 3 115
Santa Barbara 251 956 1,207
Santa Cruz 85 357 442
Lawrence Berkeley 0 520 520
Lawrence Livermore 0 800 800
Los Alamos 0 14 14
Other - UC 22 253 275
Other-Network UC n/a 2,069 2,069
_______ ______ _____
2,587 11,112 13,699
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 8,559 20,353 162,219
INS90 1,931 3,696 19,773
INS85 1,396 2,525 15,313
INS80 1,040 1,884 10,930
INS69 773 1,718 15,234
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 331 811 5,061
2-4 a.m. 206 517 3,923
4-6 a.m. 261 578 3,785
6-8 a.m. 468 1,182 7,672
8-10 a.m. 1,346 2,861 19,361
10-12 a.m. 2,495 5,479 38,896
12-2 p.m. 2,111 4,508 31,467
2-4 p.m. 2,735 5,819 42,949
4-6 p.m. 1,972 4,260 32,807
6-8 p.m. 848 1,959 18,307
8-10 p.m. 460 1,021 9,793
10-12 p.m. 466 1,181 9,448
__________ __________ __________ _________________
Total: 13,699 30,176 223,469
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 623 7,410 8,033
Davis 919 268 1,187
Irvine 1,943 0 1,943
Los Angeles 226 2,932 3,158
Riverside 102 275 377
San Diego 1,183 2,709 3,892
San Francisco 239 4 243
Santa Barbara 524 2,205 2,729
Santa Cruz 220 720 940
Lawrence Berkeley 0 1,042 1,042
Lawrence Livermore 0 2,208 2,208
Los Alamos 0 27 27
Other - UC 121 544 665
Other-Network UC n/a 3,732 3,732
_______ ______ _____
6,100 24,076 30,176
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,870 51,573 56,443
Davis 6,697 1,842 8,539
Irvine 13,702 0 13,702
Los Angeles 2,137 23,344 25,481
Riverside 527 3,619 4,146
San Diego 6,666 18,156 24,822
San Francisco 2,155 5 2,160
Santa Barbara 4,969 18,689 23,658
Santa Cruz 1,150 6,266 7,416
Lawrence Berkeley 0 9,885 9,885
Lawrence Livermore 0 18,295 18,295
Los Alamos 0 309 309
Other - UC 1,730 3,126 4,856
Other-Network UC n/a 23,757 23,757
_______ ______ _____
44,603 178,866 223,469
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 5.9
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
_________________________________________
Median session length (minutes:seconds) 7:26
Average session length (minutes:seconds) 12:07
Longest session recorded (minutes:seconds) 647:58
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 480.9
Retrievals per search - standard deviation 6333.3
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 4.3%
Percent of long searches completed
(includes partial results) 67.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 27,770 30.8%
DISPLAY (excluding automatic displays) 31,450 34.9%
BROWSE 24 0.0%
SELECT 17 0.0%
HELP 1,031 1.1%
EXPLAIN 1,539 1.7%
SET/RESET 7,771 8.6%
SHOW 344 0.4%
ADD ON (AND, OR, AND NOT) 2,398 2.7%
LOGON or LOGOFF 12,520 13.9%
COMMENT 0 0.0%
SAVE 1,528 1.7%
USE 53 0.1%
OTHER 3,758 4.2%
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 13,885 46.0% 3,382 24.4% 13 58.9 309.7
TITLE WORD 5,537 18.3% 2,267 40.9% 6 122.8 2495.1
EXACT TITLE 233 0.8% 149 63.9% 1 23.5 69.6
JOURNAL 847 2.8% 326 38.5% 124 2281.4 7201.2
EXACT JOURNAL 451 1.5% 216 47.9% 67 860.5 2037.9
SUBJECT 1,304 4.3% 464 35.6% 18 633.6 5113.2
EXACT SUBJECT 69 0.2% 10 14.5% 12 1018.9 2919.8
THESAURUS 22 0.1% 2 9.1% 714 4574.8 9758.0
EXACT THESAURUS 24 0.1% 3 12.5% 99 258.7 421.6
KEYWORD 5,994 19.8% 1,125 18.8% 32 1601.8 10155.0
SUBFILE 41 0.1% 9 21.9% 18 45.8 91.5
FORM 118 0.4% 21 17.8% 15 1977.8 10714.4
DATE 471 1.6% 100 21.2% 8 74.6 222.9
ADDED 18 0.1% 6 33.3% 16 117.2 203.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 284 0.9% 77 27.1% 12 545.7 1710.0
CONFERENCE 121 0.4% 43 35.5% 101 795.9 2381.9
LANGUAGE 56 0.2% 11 19.6% 20 101.1 232.2
CHEMICAL NAME 130 0.4% 28 21.5% 463 2216.9 3166.8
ISSN 4 0.0% 1 25.0% 310 285.7 42.1
ISBN 6 0.0% 1 16.7% 179 338.0 333.3
ID NUMBER 4 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 474 1.6% 144 30.4% 5 150.1 1007.0
EXACT PE 64 0.2% 9 14.1% 4 13.2 38.8
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 55 0.2% 15 27.3% 16 880.4 3029.6
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 2,771 10.1% 984 35.5% 5 240.8 3940.7
Single 24,573 89.9% 6,414 26.1% 18 592.2 5476.5
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 21 87.5% 6 28.6% 14 11.1 8.3
EXACT THESAURUS 3 12.5% 0 0.0% 16 25.3 30.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 88.5%
LONG 1.8%
TAGS 0.5%
FIELDS 3.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 43.4%
2. First word of command is invalid 28.7%
3. FIND command with invalid index name 6.7%
4. DISPLAY command contains invalid word 2.7%
5. PS command - no previous screen 1.6%
6. Valid command at an inappropriate time 1.4%
7. DISPLAY command-record numbers too large 1.3%
8. Search term missing from search command 1.3%
9. NS of SHOW/EXP command-no next screen 1.1%
10. DISPLAY command - no FIND results 1.0%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.9%
2. INSPEC DATABASES 12.2%
3. GUIDE (INSPEC DBS) 10.6%
4. INSPEC BACKFILES 9.4%
5. LOCATE (INS/PSY DBS) 6.1%
6. INDEXES (INSPEC DBS) 5.3%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.5%
8. Unrecognized term 4.0%
9. DATABASES 3.8%
10. MAIL 3.6%
11. All others 25.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.9%
2. First word of command is invalid 12.7%
3. FIND command with zero results 8.2%
4. NS command - no next screen 6.4%
5. FIND command with invalid index name 6.2%
6. DISPLAY command - middle of >1 screen 5.0%
7. DISPLAY command - last of >1 screen 4.7%
8. DISPLAY command-first of >1 screen 3.9%
9. DISPLAY command-complete in one screen 3.6%
10. FIND command retrieves >1 book 3.2%
11. All others 21.3%
Ten most frequent SHOW requests:
1. HISTORY 52.7%
2. MAIL STATUS 13.9%
3. SEARCH 10.9%
4. INSPEC NEWS 9.2%
5. SETTINGS (INS/PSY DBS) 2.7%
6. GLOSSARY 2.1%
7. FORM NAMES (INSPEC DBS) 1.5%
8. SYSTEM NEWS 1.5%
9. MAIL SETTINGS 1.2%
10. DATES 0.9%
11. All others 3.6%