MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 11/17/01 through 11/23/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 235 235
Davis 58 3 61
Irvine 34 0 34
Los Angeles 0 80 80
Riverside 3 18 21
San Diego 32 62 94
San Francisco 4 0 4
Santa Barbara 5 30 35
Santa Cruz 0 21 21
Lawrence Berkeley 0 36 36
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 19 19
Other-Network UC n/a 193 193
_______ ______ _____
136 705 841
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 548 1,554 11,811
INS90 102 176 906
INS85 79 184 568
INS80 54 108 278
INS69 58 135 1,086
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 75 611
2-4 a.m. 28 83 501
4-6 a.m. 16 34 252
6-8 a.m. 19 63 482
8-10 a.m. 99 191 1,736
10-12 a.m. 153 353 2,550
12-2 p.m. 139 370 1,995
2-4 p.m. 154 504 3,233
4-6 p.m. 88 213 1,386
6-8 p.m. 38 103 427
8-10 p.m. 38 76 782
10-12 p.m. 44 92 694
__________ __________ __________ _________________
Total: 841 2,157 14,649
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 0 521 521
Davis 133 3 136
Irvine 180 0 180
Los Angeles 0 141 141
Riverside 13 54 67
San Diego 67 337 404
San Francisco 13 0 13
Santa Barbara 8 67 75
Santa Cruz 0 35 35
Lawrence Berkeley 0 212 212
Lawrence Livermore 0 10 10
Los Alamos 0 0 0
Other - UC 0 38 38
Other-Network UC n/a 325 325
_______ ______ _____
414 1,743 2,157
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 3,897 3,897
Davis 461 1 462
Irvine 2,143 0 2,143
Los Angeles 0 1,951 1,951
Riverside 16 180 196
San Diego 197 1,237 1,434
San Francisco 21 0 21
Santa Barbara 26 533 559
Santa Cruz 0 416 416
Lawrence Berkeley 0 701 701
Lawrence Livermore 0 44 44
Los Alamos 0 0 0
Other - UC 0 367 367
Other-Network UC n/a 2,458 2,458
_______ ______ _____
2,864 11,785 14,649
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 3.7
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) 9:57
Average session length (minutes:seconds) 15:54
Longest session recorded (minutes:seconds) 552:36
Average number of searches completed per session 2.5
Retrievals per search - median 6.0
Retrievals per search - average 345.8
Retrievals per search - standard deviation 4484.1
Percent of searches completed with 0 results 28.3%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 75.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,043 34.9%
DISPLAY (excluding automatic displays) 2,092 35.7%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 38 0.6%
EXPLAIN 63 1.1%
SET/RESET 503 8.6%
SHOW 15 0.3%
ADD ON (AND, OR, AND NOT) 114 1.9%
LOGON or LOGOFF 724 12.4%
COMMENT 0 0.0%
SAVE 52 0.9%
USE 3 0.1%
OTHER 213 3.6%
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 908 39.0% 220 24.2% 17 94.1 400.5
TITLE WORD 345 14.8% 152 44.1% 8 1002.7 12595.2
EXACT TITLE 11 0.5% 6 54.5% 1 1.4 0.9
JOURNAL 41 1.8% 19 46.3% 48 3341.4 12727.5
EXACT JOURNAL 33 1.4% 10 30.3% 139 306.4 446.8
SUBJECT 41 1.8% 10 24.4% 13 150.8 363.4
EXACT SUBJECT 10 0.4% 3 30.0% 14 115.3 275.1
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 445 19.1% 71 16.0% 19 751.5 3991.0
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 5 0.2% 0 0.0% 40 44.8 25.3
DATE 165 7.1% 83 50.3% 158 264.3 344.1
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. 27 1.2% 4 14.8% 22 2419.1 9806.0
CONFERENCE 200 8.6% 110 55.0% 195 468.1 1329.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 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 65 2.8% 7 10.8% 4 125.3 871.7
EXACT PE 26 1.1% 3 11.5% 2 8.0 15.1
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 4 0.2% 1 25.0% 30 68.7 67.0
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 303 15.0% 128 42.2% 36 144.9 273.4
Single 1,713 85.0% 441 25.7% 16 551.8 5792.5
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 83.3%
LONG 3.5%
TAGS 0.5%
FIELDS 3.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.5%
COMMENTS 0.0%
Other 0.6%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 44.4%
2. First word of command is invalid 26.2%
3. Max. # of ports to a Z39 db are in use 7.0%
4. FIND command with invalid index name 6.5%
5. DISPLAY command contains invalid word 2.3%
6. DISPLAY command - no FIND results 1.8%
7. PS command - no previous screen 1.5%
8. Valid command at an inappropriate time 1.3%
9. Search term missing from search command 1.0%
10. NS of SHOW/EXP command-no next screen 0.8%
11. All others 7.3%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 12.7%
2. LOCATE (INS/PSY DBS) 11.1%
3. INSPEC BACKFILES 11.1%
4. FIND (INSPEC DBS) 11.1%
5. MAIL 6.3%
6. INDEXES (INSPEC DBS) 6.3%
7. DISPLAY (INS/PSY DBS) 4.8%
8. DATABASES 4.8%
9. G961 3.2%
10. Unrecognized term 3.2%
11. All others 25.4%
Ten most frequent HELP situations:
1. First word of command is invalid 18.8%
2. DISPLAY command - last of >1 screen 14.9%
3. Help requested from SET DB command 13.9%
4. DISPLAY command-first of >1 screen 8.9%
5. DISPLAY command - middle of >1 screen 8.9%
6. FIND command with invalid index name 6.9%
7. DISPLAY command-complete in one screen 6.9%
8. NS of SHOW/EXP command-no next screen 5.0%
9. NS command - no next screen 4.0%
10. FIND command with zero results 3.0%
11. All others 8.9%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SETTINGS (INS/PSY DBS) 13.3%
3. MAIL STATUS 13.3%
4. INSPEC LOADING STATISTICS 6.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)