MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/11/02 through 05/17/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 208 217
Davis 27 0 27
Irvine 36 0 36
Los Angeles 0 107 107
Riverside 0 12 12
San Diego 62 87 149
San Francisco 3 0 3
Santa Barbara 0 16 16
Santa Cruz 6 18 24
Lawrence Berkeley 0 29 29
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 1 43 44
Other-Network UC n/a 92 92
_______ ______ _____
144 647 791
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 524 1,211 10,638
INS90 109 179 1,084
INS85 67 103 635
INS80 43 70 400
INS69 48 89 808
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 37 72 315
2-4 a.m. 24 54 310
4-6 a.m. 17 37 291
6-8 a.m. 39 121 1,018
8-10 a.m. 115 232 1,603
10-12 a.m. 124 232 2,388
12-2 p.m. 111 227 1,844
2-4 p.m. 116 290 2,633
4-6 p.m. 129 239 1,717
6-8 p.m. 28 49 485
8-10 p.m. 27 50 466
10-12 p.m. 24 49 495
__________ __________ __________ _________________
Total: 791 1,652 13,565
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 13 422 435
Davis 62 0 62
Irvine 75 0 75
Los Angeles 0 271 271
Riverside 0 21 21
San Diego 107 204 311
San Francisco 5 0 5
Santa Barbara 0 28 28
Santa Cruz 13 33 46
Lawrence Berkeley 0 63 63
Lawrence Livermore 0 60 60
Los Alamos 0 0 0
Other - UC 1 94 95
Other-Network UC n/a 180 180
_______ ______ _____
276 1,376 1,652
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 256 4,087 4,343
Davis 964 0 964
Irvine 677 0 677
Los Angeles 0 1,676 1,676
Riverside 0 96 96
San Diego 492 1,953 2,445
San Francisco 18 0 18
Santa Barbara 0 386 386
Santa Cruz 12 289 301
Lawrence Berkeley 0 401 401
Lawrence Livermore 0 314 314
Los Alamos 0 0 0
Other - UC 1 590 591
Other-Network UC n/a 1,353 1,353
_______ ______ _____
2,420 11,145 13,565
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 1.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 8:41
Average session length (minutes:seconds) 12:36
Longest session recorded (minutes:seconds) 225:51
Average number of searches completed per session 2.0
Retrievals per search - median 9.0
Retrievals per search - average 422.0
Retrievals per search - standard deviation 4346.5
Percent of searches completed with 0 results 20.5%
Percent of searches entered that are long 6.4%
Percent of long searches completed
(includes partial results) 76.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,542 28.3%
DISPLAY (excluding automatic displays) 2,195 40.2%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 32 0.6%
EXPLAIN 47 0.9%
SET/RESET 440 8.1%
SHOW 6 0.1%
ADD ON (AND, OR, AND NOT) 110 2.0%
LOGON or LOGOFF 776 14.2%
COMMENT 0 0.0%
SAVE 70 1.3%
USE 0 0.0%
OTHER 238 4.4%
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 754 43.7% 142 18.8% 17 103.8 471.1
TITLE WORD 190 11.0% 64 33.7% 7 102.1 363.9
EXACT TITLE 14 0.8% 8 57.1% 2 21.2 48.4
JOURNAL 51 3.0% 17 33.3% 16 163.9 347.6
EXACT JOURNAL 24 1.4% 7 29.2% 15 908.7 2023.4
SUBJECT 103 6.0% 29 28.2% 11 142.6 625.2
EXACT SUBJECT 5 0.3% 1 20.0% 1,820 1486.8 1085.3
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 444 25.7% 63 14.2% 19 1460.0 8849.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 3 0.2% 0 0.0% 112 350.3 502.8
DATE 59 3.4% 18 30.5% 17 76.9 125.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 15 0.9% 5 33.3% 17 61.5 87.7
CONFERENCE 5 0.3% 3 60.0% 242 241.5 316.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 4 0.2% 0 0.0% 70 107.8 122.7
ISSN 3 0.2% 3 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 44 2.6% 8 18.2% 4 21.4 55.1
EXACT PE 6 0.3% 1 16.7% 15 48.6 56.2
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 1 0.1% 0 0.0% 1 1.0 0.0
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 206 13.6% 60 29.1% 7 43.5 111.2
Single 1,308 86.4% 248 19.0% 20 626.6 5361.5
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 84.5%
LONG 2.5%
TAGS 0.2%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.9%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 47.0%
2. First word of command is invalid 26.1%
3. FIND command with invalid index name 5.1%
4. DISPLAY command contains invalid word 3.6%
5. PS command - no previous screen 2.6%
6. Search term missing from search command 2.4%
7. Valid command at an inappropriate time 2.0%
8. Command contains escape or arrow key 1.6%
9. DISPLAY command-record numbers too large 1.4%
10. NS of SHOW/EXP command-no next screen 1.2%
11. All others 7.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 29.8%
2. INSPEC DATABASES 14.9%
3. INDEXES (INSPEC DBS) 12.8%
4. MAIL 8.5%
5. COMMANDS (INS/PSY/ABI/BIO DBS) 8.5%
6. 1752 6.4%
7. INSPEC BACKFILES 4.3%
8. GUIDE (INSPEC DBS) 2.1%
9. FIND (INSPEC DBS) 2.1%
10. I022 2.1%
11. All others 8.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.8%
2. FIND command with zero results 17.7%
3. First word of command is invalid 7.6%
4. DISPLAY command-first of >1 screen 7.6%
5. NS command - no next screen 6.3%
6. FIND command with invalid index name 5.1%
7. DISPLAY command-complete in one screen 5.1%
8. Multi-index search with zero results 5.1%
9. DISPLAY command - middle of >1 screen 3.8%
10. DISPLAY command - last of >1 screen 2.5%
11. All others 11.4%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. MAIL STATUS 33.3%
3. SEARCH 16.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)