MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/26/01 through 06/01/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 255 259
Davis 66 4 70
Irvine 122 0 122
Los Angeles 0 112 112
Riverside 3 6 9
San Diego 43 167 210
San Francisco 19 0 19
Santa Barbara 9 56 65
Santa Cruz 4 14 18
Lawrence Berkeley 0 48 48
Lawrence Livermore 0 33 33
Los Alamos 0 0 0
Other - UC 1 85 86
Other-Network UC n/a 363 363
_______ ______ _____
271 1,143 1,414
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 846 1,910 18,140
INS90 207 353 4,749
INS85 148 267 1,685
INS80 116 199 718
INS69 97 214 1,602
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 49 307
2-4 a.m. 37 86 480
4-6 a.m. 24 79 359
6-8 a.m. 116 212 1,709
8-10 a.m. 186 352 2,379
10-12 a.m. 210 455 3,959
12-2 p.m. 210 399 4,126
2-4 p.m. 213 445 5,177
4-6 p.m. 201 454 4,359
6-8 p.m. 75 153 1,752
8-10 p.m. 34 80 633
10-12 p.m. 83 179 1,654
__________ __________ __________ _________________
Total: 1,414 2,943 26,894
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 6 469 475
Davis 133 17 150
Irvine 341 0 341
Los Angeles 0 240 240
Riverside 5 14 19
San Diego 76 320 396
San Francisco 63 0 63
Santa Barbara 17 120 137
Santa Cruz 10 20 30
Lawrence Berkeley 0 158 158
Lawrence Livermore 0 102 102
Los Alamos 0 0 0
Other - UC 6 136 142
Other-Network UC n/a 690 690
_______ ______ _____
657 2,286 2,943
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 47 5,314 5,361
Davis 1,260 35 1,295
Irvine 4,365 0 4,365
Los Angeles 0 1,700 1,700
Riverside 21 99 120
San Diego 376 2,118 2,494
San Francisco 304 0 304
Santa Barbara 262 771 1,033
Santa Cruz 77 202 279
Lawrence Berkeley 0 2,386 2,386
Lawrence Livermore 0 1,092 1,092
Los Alamos 0 0 0
Other - UC 0 3,203 3,203
Other-Network UC n/a 3,262 3,262
_______ ______ _____
6,712 20,182 26,894
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 6.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 5:43
Average session length (minutes:seconds) 10:45
Longest session recorded (minutes:seconds) 205:06
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 1171.6
Retrievals per search - standard deviation 20984
Percent of searches completed with 0 results 29.6%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 74.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,719 30.1%
DISPLAY (excluding automatic displays) 3,393 37.5%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 54 0.6%
EXPLAIN 103 1.1%
SET/RESET 855 9.5%
SHOW 27 0.3%
ADD ON (AND, OR, AND NOT) 224 2.5%
LOGON or LOGOFF 1,229 13.6%
COMMENT 0 0.0%
SAVE 88 1.0%
USE 1 0.0%
OTHER 347 3.8%
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 1,243 41.2% 307 24.7% 16 91.0 486.8
TITLE WORD 623 20.6% 293 47.0% 5 80.9 278.3
EXACT TITLE 94 3.1% 44 46.8% 1 4.9 19.4
JOURNAL 146 4.8% 64 43.8% 21 6707.4 40022.6
EXACT JOURNAL 6 0.2% 4 66.7% 2,827 2827.0 3996.6
SUBJECT 73 2.4% 15 20.5% 347 848.1 2346.7
EXACT SUBJECT 3 0.1% 0 0.0% 131 5493.0 9397.5
THESAURUS 4 0.1% 0 0.0% 18 2933.8 5840.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 618 20.5% 123 19.9% 23 3057.6 36197.8
SUBFILE 4 0.1% 0 0.0% 13 12.8 13.6
FORM 17 0.6% 0 0.0% 347 443.4 415.1
DATE 48 1.6% 12 25.0% 195 327.4 598.5
ADDED 11 0.4% 6 54.5% 17 25.4 28.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 19 0.6% 3 15.8% 13 843.1 3136.4
CONFERENCE 1 0.0% 0 0.0% 6,641 6641.0 0.0
LANGUAGE 1 0.0% 0 0.0% 52 52.0 0.0
CHEMICAL NAME 3 0.1% 3 100% 0 0.0 0.0
ISSN 2 0.1% 2 100% 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 96 3.2% 34 35.4% 4 66.1 282.7
EXACT PE 8 0.3% 2 25.0% 1 5.8 10.9
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 0 0.0% 0 0.0% 0 0.0 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 318 11.8% 121 38.0% 7 239.6 1275.0
Single 2,372 88.2% 670 28.2% 17 1295.1 21456.5
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 2 100% 1 50.0% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 83.2%
LONG 2.0%
TAGS 1.4%
FIELDS 6.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.4%
Ten most frequent errors:
1. NS command - no next screen 45.6%
2. First word of command is invalid 25.3%
3. FIND command with invalid index name 5.5%
4. DISPLAY command contains invalid word 2.4%
5. Max. # of ports to a Z39 db are in use 2.2%
6. DISPLAY command - no FIND results 1.7%
7. Command contains escape or arrow key 1.2%
8. PS command - no previous screen 1.1%
9. Search term missing from search command 1.1%
10. Index invalid in current database 1.0%
11. All others 12.9%
Ten most frequent EXPLAIN requests:
1. GUIDE (INSPEC DBS) 17.5%
2. INSPEC DATABASES 15.5%
3. FIND (INSPEC DBS) 9.7%
4. LOCATE (INS/PSY DBS) 5.8%
5. MAIL 4.9%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 4.9%
7. INDEXES (INSPEC DBS) 4.9%
8. INSPEC BACKFILES 3.9%
9. SUBFILES (INSPEC DBS) 2.9%
10. DATABASES 2.9%
11. All others 27.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.3%
2. First word of command is invalid 14.6%
3. FIND command retrieves >1 book 5.1%
4. NS command - no next screen 4.5%
5. FIND command with zero results 4.5%
6. DISPLAY command - last of >1 screen 3.8%
7. SHOW NEWS command 3.2%
8. DISPLAY command-complete in one screen 3.2%
9. DISPLAY command-first of >1 screen 3.2%
10. DISPLAY command - middle of >1 screen 3.2%
11. All others 25.5%
Ten most frequent SHOW requests:
1. HISTORY 51.9%
2. SEARCH 37.0%
3. INSPEC NEWS 3.7%
4. MAIL SETTINGS 3.7%
5. MAIL STATUS 3.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)