MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/01/00 through 02/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 211 2,395 2,606
Davis 291 25 316
Irvine 712 0 712
Los Angeles 139 1,237 1,376
Riverside 42 55 97
San Diego 362 1,250 1,612
San Francisco 179 0 179
Santa Barbara 161 616 777
Santa Cruz 221 166 387
Lawrence Berkeley 0 324 324
Lawrence Livermore 0 610 610
Los Alamos 0 4 4
Other - UC 30 290 320
Other-Network UC n/a 1,869 1,869
_______ ______ _____
2,348 8,841 11,189
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 7,203 17,754 171,397
INS90 1,443 2,516 17,042
INS85 986 1,709 11,262
INS80 828 1,415 8,699
INS69 729 1,540 15,071
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 217 516 3,522
2-4 a.m. 196 538 4,629
4-6 a.m. 172 447 4,442
6-8 a.m. 405 982 6,947
8-10 a.m. 1,119 2,599 31,049
10-12 a.m. 1,938 4,281 30,999
12-2 p.m. 1,821 3,826 27,576
2-4 p.m. 2,240 4,944 43,523
4-6 p.m. 1,551 3,418 40,943
6-8 p.m. 695 1,414 12,756
8-10 p.m. 444 1,067 7,822
10-12 p.m. 391 902 9,263
__________ __________ __________ _________________
Total: 11,189 24,934 223,471
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 500 5,151 5,651
Davis 720 44 764
Irvine 2,005 0 2,005
Los Angeles 282 2,666 2,948
Riverside 110 92 202
San Diego 1,068 2,662 3,730
San Francisco 463 0 463
Santa Barbara 409 1,299 1,708
Santa Cruz 450 394 844
Lawrence Berkeley 0 858 858
Lawrence Livermore 0 1,460 1,460
Los Alamos 0 7 7
Other - UC 67 740 807
Other-Network UC n/a 3,487 3,487
_______ ______ _____
6,074 18,860 24,934
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,985 46,970 50,955
Davis 4,920 2,197 7,117
Irvine 15,507 0 15,507
Los Angeles 11,941 22,453 34,394
Riverside 726 777 1,503
San Diego 3,991 19,604 23,595
San Francisco 4,445 0 4,445
Santa Barbara 3,467 15,717 19,184
Santa Cruz 2,372 2,996 5,368
Lawrence Berkeley 0 5,721 5,721
Lawrence Livermore 0 14,104 14,104
Los Alamos 0 82 82
Other - UC 14,338 5,694 20,032
Other-Network UC n/a 21,464 21,464
_______ ______ _____
65,692 157,779 223,471
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 7.2
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) 7:35
Average session length (minutes:seconds) 12:03
Longest session recorded (minutes:seconds) 506:09
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 630.2
Retrievals per search - standard deviation 8500.8
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 4.6%
Percent of long searches completed
(includes partial results) 64.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 23,081 30.5%
DISPLAY (excluding automatic displays) 27,219 36.0%
BROWSE 11 0.0%
SELECT 5 0.0%
HELP 872 1.2%
EXPLAIN 1,277 1.7%
SET/RESET 6,362 8.4%
SHOW 258 0.3%
ADD ON (AND, OR, AND NOT) 1,850 2.4%
LOGON or LOGOFF 10,254 13.6%
COMMENT 1 0.0%
SAVE 1,201 1.6%
USE 37 0.0%
OTHER 3,218 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 10,487 41.6% 2,528 24.1% 14 77.5 497.1
TITLE WORD 4,877 19.3% 1,934 39.7% 5 80.6 642.3
EXACT TITLE 142 0.6% 66 46.5% 1 176.0 1426.9
JOURNAL 709 2.8% 296 41.7% 133 4055.0 14987.7
EXACT JOURNAL 256 1.0% 119 46.5% 37 2420.6 8226.0
SUBJECT 919 3.6% 302 32.9% 19 417.8 1811.0
EXACT SUBJECT 79 0.3% 24 30.4% 14 1518.6 3507.1
THESAURUS 35 0.1% 6 17.1% 1,491 3509.4 4356.1
EXACT THESAURUS 3 0.0% 0 0.0% 293 658.3 873.3
KEYWORD 5,678 22.5% 1,092 19.2% 29 2084.9 16134.4
SUBFILE 19 0.1% 0 0.0% 23 45.8 63.3
FORM 121 0.5% 19 15.7% 13 50.1 110.6
DATE 467 1.9% 141 30.2% 8 129.5 411.6
ADDED 44 0.2% 24 54.5% 17 22.8 18.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 548 2.2% 107 19.5% 19 452.8 3526.6
CONFERENCE 102 0.4% 39 38.2% 91 1661.7 7249.6
LANGUAGE 14 0.1% 2 14.3% 179 1278.4 2194.9
CHEMICAL NAME 93 0.4% 43 46.2% 10 43.0 106.9
ISSN 21 0.1% 7 33.3% 1,525 1098.6 650.0
ISBN 9 0.0% 3 33.3% 85 108.0 103.6
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 493 2.0% 117 23.7% 7 96.8 515.8
EXACT PE 85 0.3% 12 14.1% 4 57.4 266.0
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 15 0.1% 2 13.3% 47 118.2 171.6
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 2,478 10.9% 916 37.0% 6 102.3 799.1
Single 20,176 89.1% 5,027 24.9% 18 857.1 9356.6
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 9 81.8% 1 11.1% 2 11.9 21.5
EXACT THESAURUS 2 18.2% 2 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 85.4%
LONG 2.5%
TAGS 0.3%
FIELDS 4.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 43.2%
2. First word of command is invalid 27.5%
3. FIND command with invalid index name 7.0%
4. DISPLAY command contains invalid word 2.5%
5. PS command - no previous screen 2.1%
6. NS of SHOW/EXP command-no next screen 1.6%
7. Search term missing from search command 1.3%
8. Valid command at an inappropriate time 1.3%
9. Invalid SET DB INS command issued 1.2%
10. DISPLAY command-record numbers too large 1.2%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.3%
2. INSPEC DATABASES 10.5%
3. GUIDE (INSPEC DBS) 9.6%
4. LOCATE (INS/PSY DBS) 7.9%
5. INSPEC BACKFILES 6.3%
6. INDEXES (INSPEC DBS) 6.0%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.5%
8. DATABASES 4.5%
9. MAIL 4.0%
10. DISPLAY (INS/PSY DBS) 3.6%
11. All others 29.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.4%
2. First word of command is invalid 13.0%
3. FIND command with zero results 6.8%
4. FIND command with invalid index name 6.0%
5. DISPLAY command - last of >1 screen 5.1%
6. DISPLAY command - middle of >1 screen 4.9%
7. NS command - no next screen 4.9%
8. FIND command retrieves >1 book 4.7%
9. DISPLAY command-first of >1 screen 4.4%
10. DISPLAY command-complete in one screen 3.3%
11. All others 21.5%
Ten most frequent SHOW requests:
1. HISTORY 56.6%
2. SEARCH 13.2%
3. MAIL STATUS 12.8%
4. INSPEC NEWS 5.8%
5. INSPEC LOADING STATISTICS 4.7%
6. SETTINGS (INS/PSY DBS) 2.3%
7. GLOSSARY 0.8%
8. SYSTEM NEWS 0.8%
9. MAIL SETTINGS 0.8%
10. DATABASES 0.8%
11. All others 1.6%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)