MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/23/00 through 12/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 94 94
Davis 23 0 23
Irvine 19 0 19
Los Angeles 2 64 66
Riverside 0 7 7
San Diego 22 67 89
San Francisco 3 0 3
Santa Barbara 8 9 17
Santa Cruz 0 24 24
Lawrence Berkeley 0 22 22
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 122 122
_______ ______ _____
77 451 528
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 352 1,015 9,813
INS90 73 124 886
INS85 40 64 307
INS80 33 53 427
INS69 30 64 540
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 21 53 247
2-4 a.m. 18 21 93
4-6 a.m. 4 11 73
6-8 a.m. 18 74 813
8-10 a.m. 79 187 1,730
10-12 a.m. 118 294 2,851
12-2 p.m. 73 166 1,205
2-4 p.m. 48 130 1,932
4-6 p.m. 81 192 1,795
6-8 p.m. 21 95 623
8-10 p.m. 19 33 217
10-12 p.m. 28 64 394
__________ __________ __________ _________________
Total: 528 1,320 11,973
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 0 264 264
Davis 43 0 43
Irvine 140 0 140
Los Angeles 7 137 144
Riverside 0 15 15
San Diego 33 119 152
San Francisco 24 0 24
Santa Barbara 41 26 67
Santa Cruz 0 57 57
Lawrence Berkeley 0 48 48
Lawrence Livermore 0 56 56
Los Alamos 0 0 0
Other - UC 0 56 56
Other-Network UC n/a 254 254
_______ ______ _____
288 1,032 1,320
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 3,130 3,130
Davis 775 0 775
Irvine 1,548 0 1,548
Los Angeles 94 819 913
Riverside 0 135 135
San Diego 208 960 1,168
San Francisco 198 0 198
Santa Barbara 480 113 593
Santa Cruz 0 310 310
Lawrence Berkeley 0 733 733
Lawrence Livermore 0 789 789
Los Alamos 0 0 0
Other - UC 0 152 152
Other-Network UC n/a 1,529 1,529
_______ ______ _____
3,303 8,670 11,973
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 6.5
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) 7:08
Average session length (minutes:seconds) 12:13
Longest session recorded (minutes:seconds) 114:20
Average number of searches completed per session 2.5
Retrievals per search - median 7.0
Retrievals per search - average 2181.2
Retrievals per search - standard deviation 29499
Percent of searches completed with 0 results 27.8%
Percent of searches entered that are long 4.6%
Percent of long searches completed
(includes partial results) 77.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,207 31.3%
DISPLAY (excluding automatic displays) 1,445 37.5%
BROWSE 2 0.1%
SELECT 0 0.0%
HELP 35 0.9%
EXPLAIN 58 1.5%
SET/RESET 309 8.0%
SHOW 7 0.2%
ADD ON (AND, OR, AND NOT) 113 2.9%
LOGON or LOGOFF 460 11.9%
COMMENT 0 0.0%
SAVE 62 1.6%
USE 1 0.0%
OTHER 160 4.1%
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 636 48.3% 160 25.2% 20 96.0 354.4
TITLE WORD 278 21.1% 111 39.9% 7 95.9 280.1
EXACT TITLE 5 0.4% 3 60.0% 711 711.0 241.8
JOURNAL 30 2.3% 14 46.7% 113 867.0 1141.4
EXACT JOURNAL 11 0.8% 5 45.5% 10 320.3 764.1
SUBJECT 36 2.7% 8 22.2% 38 313.4 522.8
EXACT SUBJECT 5 0.4% 1 20.0% 7 3835.0 7658.7
THESAURUS 5 0.4% 2 40.0% 10 3646.7 6303.2
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 201 15.3% 37 18.4% 39 7904.5 58226.1
SUBFILE 6 0.5% 0 0.0% 41 62.2 79.4
FORM 10 0.8% 3 30.0% 142 294.3 300.9
DATE 19 1.4% 6 31.6% 15 31.7 40.7
ADDED 11 0.8% 6 54.5% 13 11.2 6.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 14 1.1% 3 21.4% 17 265.1 537.2
CONFERENCE 6 0.5% 3 50.0% 1,093 862.7 642.3
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 2 0.2% 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 37 2.8% 8 21.6% 5 19.7 33.6
EXACT PE 3 0.2% 1 33.3% 3 2.5 2.1
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 1 0.1% 0 0.0% 15 15.0 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 117 9.8% 44 37.6% 15 248.5 1290.6
Single 1,077 90.2% 283 26.3% 20 1738.5 26590.6
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 2 100% 2 100% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 83.9%
LONG 3.1%
TAGS 0.5%
FIELDS 3.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 50.4%
2. First word of command is invalid 23.9%
3. FIND command with invalid index name 6.3%
4. DISPLAY command contains invalid word 4.0%
5. NS of SHOW/EXP command-no next screen 2.3%
6. Max. # of ports to a Z39 db are in use 2.0%
7. PS command - no previous screen 1.7%
8. Index invalid in current database 1.4%
9. Valid command at an inappropriate time 0.9%
10. DISPLAY command-record numbers too large 0.6%
11. All others 6.3%
Ten most frequent EXPLAIN requests:
1. 1752 17.2%
2. FIND (INSPEC DBS) 12.1%
3. INDEXES (INSPEC DBS) 10.3%
4. MAIL 8.6%
5. DATABASES 8.6%
6. LOCATE (INS/PSY DBS) 6.9%
7. GUIDE (INSPEC DBS) 5.2%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 5.2%
9. DISPLAY (INS/PSY DBS) 5.2%
10. INSPEC DATABASES 3.4%
11. All others 17.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.4%
2. DISPLAY command - last of >1 screen 17.2%
3. NS command - no next screen 9.7%
4. DISPLAY command - middle of >1 screen 7.5%
5. DISPLAY command-complete in one screen 5.4%
6. DISPLAY command-first of >1 screen 5.4%
7. First word of command is invalid 4.3%
8. FIND command retrieves 1 book 4.3%
9. FIND command retrieves >1 book 4.3%
10. FIND command with zero results 3.2%
11. All others 19.4%
Ten most frequent SHOW requests:
1. HISTORY 71.4%
2. SEARCH 28.6%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)