MELVYL ABI DATABASE TELNET STATISTICS
Time period: 03/03/01 through 03/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 89 92
Davis 20 0 20
Irvine 19 0 19
Los Angeles 1 35 36
Riverside 14 0 14
San Diego 3 9 12
San Francisco 8 0 8
Santa Barbara 7 3 10
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 2 2
Other-Network UC n/a 62 62
_______ ______ _____
75 200 275
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 8 200
2-4 a.m. 4 12 172
4-6 a.m. 2 3 30
6-8 a.m. 7 15 96
8-10 a.m. 20 48 703
10-12 a.m. 47 114 1,191
12-2 p.m. 35 86 824
2-4 p.m. 56 216 3,741
4-6 p.m. 52 208 5,953
6-8 p.m. 23 84 3,052
8-10 p.m. 14 28 221
10-12 p.m. 9 24 401
__________ __________ __________ _________________
Total: 275 846 16,584
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 18 366 384
Davis 64 0 64
Irvine 36 0 36
Los Angeles 1 95 96
Riverside 31 0 31
San Diego 6 16 22
San Francisco 23 0 23
Santa Barbara 8 10 18
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1 1
Other-Network UC n/a 171 171
_______ ______ _____
187 659 846
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 123 12,052 12,175
Davis 408 0 408
Irvine 467 0 467
Los Angeles 4 669 673
Riverside 184 0 184
San Diego 40 118 158
San Francisco 281 0 281
Santa Barbara 124 185 309
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 13 13
Other-Network UC n/a 1,916 1,916
_______ ______ _____
1,631 14,953 16,584
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 0.9
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 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 9:53
Average session length (minutes:seconds) 14:44
Longest session recorded (minutes:seconds) 140:24
Average number of searches completed per session 3.0
Retrievals per search - median 10.0
Retrievals per search - average 1483.0
Retrievals per search - standard deviation 10922
Percent of searches completed with 0 results 24.8%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 62.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 798 29.8%
DISPLAY (excluding automatic displays) 1,209 45.1%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 51 1.9%
EXPLAIN 29 1.1%
SET/RESET 117 4.4%
SHOW 7 0.3%
ADD ON (AND, OR, AND NOT) 48 1.8%
LOGON or LOGOFF 329 12.3%
COMMENT 0 0.0%
SAVE 22 0.8%
USE 1 0.0%
OTHER 68 2.5%
2.1 Article Text
_________________
DISPLAY TEXT commands 103
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 18
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 0
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 189 21.5% 51 27.0% 9 43.5 113.6
TITLE WORD 181 20.6% 65 35.9% 10 98.1 345.8
EXACT TITLE 27 3.1% 10 37.0% 1 6.7 19.0
JOURNAL 48 5.5% 23 47.9% 65 636.7 2261.1
EXACT JOURNAL 31 3.5% 9 29.0% 848 6263.3 10513.7
SUBJECT 40 4.6% 20 50.0% 1,708 20058.7 28832.5
EXACT SUBJECT 1 0.1% 1 100% 0 0.0 0.0
KEYWORD 265 30.1% 23 8.7% 141 2675.9 17338.2
PUB TYPE 4 0.5% 0 0.0% 68 65.8 39.7
DATE 21 2.4% 3 14.3% 3 36.9 62.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
COMPANY NAME 2 0.2% 1 50.0% 79 79.0 0.0
EX COMPANY NAME 2 0.2% 2 100% 0 0.0 0.0
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.2% 2 100% 0 0.0 0.0
PERIODICAL 16 1.8% 2 12.5% 6 16.6 34.8
EXACT PE 12 1.4% 0 0.0% 3 3.8 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 38 4.3% 5 13.2% 45 532.2 2526.4
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 90 11.4% 24 26.7% 4 38.8 69.0
Single 699 88.6% 169 24.2% 46 2327.7 13659.2
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:
SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.7%
SHORT 88.8%
LONG 0.9%
TAGS 0.0%
FIELDS 0.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.8%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 37.1%
2. First word of command is invalid 26.9%
3. FIND command with invalid index name 9.5%
4. PS command - no previous screen 6.2%
5. DISPLAY command contains invalid word 4.4%
6. Search term missing from search command 3.6%
7. Valid command at an inappropriate time 2.2%
8. DISPLAY command-record numbers too large 1.5%
9. Index invalid in current database 1.1%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 6.5%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 20.7%
2. LOCATE (ARTICLE DBS) 17.2%
3. INDEXES (ABI DB) 10.3%
4. FIND (ABI DB) 6.9%
5. COMMANDS (ABI/PSY DBS) 6.9%
6. MAGS TEXT 3.4%
7. SUBJECT INDEX (ABI DB) 3.4%
8. DISPLAY (ABI DB) 3.4%
9. B154 3.4%
10. G175 3.4%
11. All others 20.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.3%
2. First word of command is invalid 13.8%
3. FIND command with invalid index name 7.5%
4. FIND command retrieves >1 book 7.5%
5. PS command - no previous screen 6.3%
6. FIND command with zero results 6.3%
7. DISPLAY command-first of >1 screen 6.3%
8. DISPLAY command - last of >1 screen 5.0%
9. DISPLAY command contains invalid word 3.8%
10. DISPLAY command - middle of >1 screen 3.8%
11. All others 18.8%
Ten most frequent SHOW requests:
1. SEARCH 83.3%
2. HISTORY 16.7%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)