MELVYL ABI DATABASE TELNET STATISTICS
Time period: 01/01/01 through 01/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 20 298 318
Davis 77 1 78
Irvine 119 0 119
Los Angeles 10 102 112
Riverside 11 9 20
San Diego 6 24 30
San Francisco 41 0 41
Santa Barbara 5 9 14
Santa Cruz 12 5 17
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 4 13 17
Other-Network UC n/a 292 292
_______ ______ _____
305 755 1,060
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 56 1,088
2-4 a.m. 15 33 426
4-6 a.m. 5 6 233
6-8 a.m. 23 95 1,659
8-10 a.m. 119 268 2,582
10-12 a.m. 203 510 6,893
12-2 p.m. 162 472 6,338
2-4 p.m. 222 627 8,116
4-6 p.m. 141 466 5,123
6-8 p.m. 61 244 3,520
8-10 p.m. 55 188 3,971
10-12 p.m. 40 150 2,379
__________ __________ __________ _________________
Total: 1,060 3,115 42,328
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 73 842 915
Davis 202 1 203
Irvine 392 0 392
Los Angeles 13 304 317
Riverside 35 21 56
San Diego 24 88 112
San Francisco 193 0 193
Santa Barbara 7 25 32
Santa Cruz 38 21 59
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 4 35 39
Other-Network UC n/a 796 796
_______ ______ _____
981 2,134 3,115
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 689 13,217 13,906
Davis 1,285 0 1,285
Irvine 4,258 0 4,258
Los Angeles 111 4,294 4,405
Riverside 1,105 867 1,972
San Diego 68 905 973
San Francisco 2,803 0 2,803
Santa Barbara 5 423 428
Santa Cruz 311 245 556
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 11 225 236
Other-Network UC n/a 11,506 11,506
_______ ______ _____
10,646 31,682 42,328
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.5
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 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 10:01
Average session length (minutes:seconds) 15:46
Longest session recorded (minutes:seconds) 621:13
Average number of searches completed per session 2.9
Retrievals per search - median 7.0
Retrievals per search - average 1425.5
Retrievals per search - standard deviation 11591
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 70.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,786 25.6%
DISPLAY (excluding automatic displays) 5,093 46.8%
BROWSE 6 0.1%
SELECT 0 0.0%
HELP 91 0.8%
EXPLAIN 105 1.0%
SET/RESET 482 4.4%
SHOW 38 0.3%
ADD ON (AND, OR, AND NOT) 329 3.0%
LOGON or LOGOFF 1,249 11.5%
COMMENT 0 0.0%
SAVE 377 3.5%
USE 4 0.0%
OTHER 317 2.9%
2.1 Article Text
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DISPLAY TEXT commands 493
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 84
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 870 28.5% 232 26.7% 10 72.7 302.2
TITLE WORD 601 19.7% 237 39.4% 9 86.1 519.4
EXACT TITLE 31 1.0% 16 51.6% 1 25.7 91.7
JOURNAL 168 5.5% 70 41.7% 477 4187.8 11762.6
EXACT JOURNAL 87 2.8% 24 27.6% 1,016 4061.6 9656.5
SUBJECT 183 6.0% 81 44.3% 189 7293.3 18765.8
EXACT SUBJECT 23 0.8% 7 30.4% 331 6530.2 11209.6
KEYWORD 856 28.0% 147 17.2% 57 3210.2 21179.3
PUB TYPE 14 0.5% 4 28.6% 32 91.4 129.1
DATE 70 2.3% 22 31.4% 56 266.8 643.5
ADDED 1 0.0% 0 0.0% 12,240 12240.0 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 30 1.0% 7 23.3% 25 230.3 365.9
EX COMPANY NAME 5 0.2% 2 40.0% 3 23.0 34.6
DUNS 1 0.0% 0 0.0% 1,388 1388.0 0.0
TICKER SYMBOL 2 0.1% 1 50.0% 307 307.0 0.0
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 987 987.0 0.0
PERIODICAL 80 2.6% 11 13.7% 7 91.1 256.9
EXACT PE 27 0.9% 8 29.6% 6 27.9 57.3
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 6 0.2% 0 0.0% 536 4267.7 6163.3
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 282 10.2% 97 34.4% 5 154.1 776.0
Single 2,478 89.8% 670 27.0% 26 2144.6 14549.3
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 6 100% 2 33.3% 22 31.0 32.1
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 86.8%
LONG 0.4%
TAGS 0.0%
FIELDS 4.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.9%
COMMENTS 0.0%
Other 2.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.5%
Ten most frequent errors:
1. NS command - no next screen 32.5%
2. First word of command is invalid 28.4%
3. FIND command with invalid index name 9.8%
4. DISPLAY command contains invalid word 5.0%
5. PS command - no previous screen 3.3%
6. DISPLAY command-record numbers too large 2.5%
7. Max. # of ports to a Z39 db are in use 1.9%
8. Valid command at an inappropriate time 1.7%
9. Search term missing from search command 1.5%
10. DISPLAY command - no FIND results 1.1%
11. All others 12.3%
Ten most frequent EXPLAIN requests:
1. INDEXES (ABI DB) 18.1%
2. FIND (ABI DB) 17.1%
3. GUIDE (ABI DB) 16.2%
4. MAIL 7.6%
5. ABI/INFORM DB 4.8%
6. COMMANDS (ABI/PSY DBS) 4.8%
7. LOCATE (ARTICLE DBS) 4.8%
8. Unrecognized term 4.8%
9. PUBLICATION TYPES (ABI DB) 2.9%
10. BROWSE (ABI DB) 1.9%
11. All others 17.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.5%
2. First word of command is invalid 13.8%
3. FIND command with zero results 11.7%
4. FIND command with invalid index name 10.7%
5. DISPLAY command-first of >1 screen 5.6%
6. NS command - no next screen 3.6%
7. DISPLAY command - last of >1 screen 3.1%
8. FIND command retrieves >1 book 2.6%
9. DISPLAY command - middle of >1 screen 2.6%
10. DISPLAY LIST - >1 screen 2.0%
11. All others 19.9%
Ten most frequent SHOW requests:
1. HISTORY 72.7%
2. ABI NEWS 6.1%
3. SEARCH 6.1%
4. MAIL STATUS 6.1%
5. PUBLICATION TYPES (ABI DB) 3.0%
6. ABI LOADING STATISTICS 3.0%
7. GLOSSARY 3.0%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)