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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:7 u; p/ Z: i3 }; p
to do-business 1 q6 w9 j6 Y5 r5 ]8 q
rt random 360
/ N% D% E3 }. l+ |" R: p5 U# t fd 17 ~, E# _1 K, x
ifelse(other turtles-here != nobody)[( V, B3 P4 E, |4 f' b: r
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.+ ]& s' q* E' ^1 e4 B9 i$ w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) |( N: `2 N' l1 R" p/ m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& x5 Z, x9 X0 G" d# L
   set [trade-record-one-len] of self length [trade-record-one] of self
$ |9 l6 M" j: y7 E* z- e7 ]1 f   set trade-record-current( list (timer) (random money-upper-limit))( F6 G! R% g  e: `

" R# }7 t1 v" e  b: W# V: j2 S) P  ^问题的提示如下:
8 E  T; |  i5 m% w$ e; P* I9 N2 N2 Y3 f( Z1 g# L
error while turtle 50 running OF in procedure DO-BUSINESS
( Q. {; N' B$ ^% H  called by procedure GO
1 s/ _, B' R; ^& b" UOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 k6 \- }1 @$ C2 Y
(halted running of go)1 ?2 v. T9 o% U& B
3 i+ X5 d% ]% E' y+ X$ l. v8 h: C# z5 H
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~: o- s) t0 Q8 b* F! O( M& h) i
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教+ o$ ~7 b, A) e$ U; n$ @
globals[
4 y1 z8 Q5 V5 U& |  n( sxmax
* _+ E# k. O5 D1 [, i6 v( _ymax# i0 B( ^1 q- g  T
global-reputation-list" o) }# w+ N" t! \* U1 a; r

1 d2 r- P( o$ O9 }. \0 k9 E$ O( {;;
每一个turtle的全局声誉都存在此LIST* `' ]$ Z6 \) Y% I* Z) w( q4 |' ]$ _
credibility-list
  c' J5 _+ K' D' q5 Q0 E7 m8 p;;
每一个turtle的评价可信度& V1 q- m6 o  f0 P' f
honest-service2 y* I/ v3 i0 W) _4 s
unhonest-service
: ?, |) {, u+ U0 `- I! ?# ^! Ioscillation9 {8 v0 d2 G# ~# d: ~- v, `+ j- C, f
rand-dynamic" C) i; _$ D! e, L
]6 _. F+ K0 ~0 `9 h

* j4 K% i( {  J( qturtles-own[+ V0 I6 M" G8 A2 G  V% |
trade-record-all
0 B) F# N, M# b4 [3 e;;a list of lists,
trade-record-one组成
3 c& N* E7 o- f# Y( Y' z1 p% Itrade-record-one9 a" T, Y: [3 t! E  z, g3 E  J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, o5 _, a+ a9 W- G% A
1 G; i) w' r, r8 l' L2 m# {% r;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]% S* W( H1 |* w7 Z& D
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
0 ~+ t2 K5 i7 D$ S& ~- [credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list: a$ _3 X& B* a' S5 }
neighbor-total# L6 t+ ~0 T* e# }
;;
记录该turtle的邻居节点的数目
2 K* n' @7 b4 [6 e7 F& [trade-time) T8 m! y6 [1 m9 |2 M1 e
;;
当前发生交易的turtle的交易时间
& \4 F8 j& w+ r0 d6 {: @5 Kappraise-give' _! T; A, Y2 a
;;
当前发生交易时给出的评价; {- R- R! S* G- D
appraise-receive+ n# e' X( D+ H
;;
当前发生交易时收到的评价/ W  H; Y7 i) q" K* o
appraise-time. N* G: C. V# \* {* I9 S8 I8 r2 I  q
;;
当前发生交易时的评价时间
) f' S( U& \( G4 U( u' j. Q% Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" p- z, G" T: X  z/ x- d
trade-times-total
8 ?7 P2 P1 d, F- J, j! q;;
与当前turtle的交易总次数# A& f; V" Y7 C+ u7 ^
trade-money-total
$ D2 F9 j8 ^9 J2 F;;
与当前turtle的交易总金额
( X( H% Z3 A1 u" olocal-reputation7 w2 y: w: f; Z3 l8 t2 S% j
global-reputation
* v3 \9 b1 h: ?* W2 ycredibility
+ c$ w& D. B% c) n' v# M4 U9 |;;
评价可信度,每次交易后都需要更新
& e0 b3 R' C# pcredibility-all
5 \4 z4 U% v8 b, b4 d. E;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
/ f  ?/ c- p1 G9 t! i
) Z2 c! ?( c0 P: n  Z/ I+ j;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5- A4 \- g" ?) s% F; ^' |
credibility-one
  H# q3 ~4 v8 z- i# C: D9 O; L;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
$ Z4 E0 r) J* h# |3 fglobal-proportion
, I: v& ~/ T# q4 m7 S0 fcustomer
2 a7 ^) O; y& H; F, n$ i' O' ^customer-no% V- p8 c1 f- g  j, S+ X. Y+ E
trust-ok0 |8 I7 H( U9 M3 ]
trade-record-one-len;;trade-record-one的长度
& o. Y. ^+ E8 j]
" P9 @8 s/ ~* T  G& Z
* B, j' O( ~0 p9 e. p! a  q( w;;setup procedure. S8 S6 W( _4 n" W" r
( i0 ?: K+ `  p' V* Q. k" Y
to setup
( \' @, ^6 ?: w  a' A, _( G4 l, E2 ^# c1 ~) Z6 g2 _* e
ca

* ]8 V/ \4 H; _! N
; L/ W* `' w2 y6 b: K6 ]+ I# ^initialize-settings

7 e* f6 Z- @8 M5 W1 x- [5 A4 t! y7 {9 I% `& F1 {: l
crt people [setup-turtles]

# A8 J, u6 Q: `, w4 o) O+ a$ }, N  G  X1 T% T, R5 m9 {
reset-timer
/ p  N' ^# O0 h* F

' e  R5 ]8 i# |$ x# j. h- Apoll-class

: v+ f  V$ D8 P4 ~4 k! D+ b* C; o: N# P. d* k2 K/ t8 ?# k4 @
setup-plots
% S9 K3 X5 t* ~6 A

" b6 R* K3 ^/ w7 P+ H7 kdo-plots

3 f- C- F/ m6 @" |/ Z+ kend1 Y/ D2 O- l7 [( U
* z4 {# E. Z) p2 M' ~, R" P0 b
to initialize-settings
5 O8 P6 L% n( O
- S. v2 W5 s7 h, W! p" ~set global-reputation-list []
3 i* R6 A7 ?! t( s3 x2 z
: t. P  f/ A8 G/ h
set credibility-list n-values people [0.5]
' u' U6 i, v/ _& J& G8 i/ e
& _# Q) A- Q7 N8 D9 z
set honest-service 0
# e/ K# U9 t& O/ d7 f/ W1 h
" w$ M, e+ {2 {: _5 S
set unhonest-service 0
, q0 o3 q7 m6 q2 p1 B5 p9 s5 b) q* A

, n. p) S! G' H; v3 R/ Aset oscillation 0

. x% G: a1 h4 }" C8 V; f
- A, P6 G# ]4 d8 W$ c8 W3 l  o. nset rand-dynamic 0

/ g, l  }5 l0 T' m" o7 gend0 f) M! ~0 q, s2 g; t. j" R
% V) Z" @1 W- d+ ^, q! \) c. V
to setup-turtles
/ `1 w; s' y" n1 B. xset shape "person": ^2 ~$ F  j, z  Q8 j
setxy random-xcor random-ycor% m& u5 T8 l, P, o! N% e  U
set trade-record-one []8 H$ u9 u. a5 j# }' l" ?( o  h- m

6 T2 A2 i, H: u5 Z) W& Tset trade-record-all n-values people [(list (? + 1) 0 0)]
# G" b; K% [9 J; X( Q: }

% a1 A3 x4 B& M$ x7 q1 _set trade-record-current []
9 N- y8 c  r7 P+ l# oset credibility-receive []/ ^* z1 Z3 f: G% }
set local-reputation 0.5( V. f! h. j- [5 o3 a* j4 q
set neighbor-total 0
) p1 Z- s6 @% i; R6 h/ I1 v" Jset trade-times-total 0' {  ~. Z4 @1 {; s! |+ I
set trade-money-total 01 Y, B- O& c) z3 H
set customer nobody5 l, Y8 O' P  P2 b
set credibility-all n-values people [creat-credibility]
. r7 y- p" l5 E  T/ y$ g9 Y/ Lset credibility n-values people [-1]
' k$ @. A8 X' _7 dget-color
4 _+ d; }8 u# W1 A1 t6 X6 T
$ k) t. R! c) t2 f% Y/ W
end9 t) }; h( a2 d9 v% e
5 u' X0 X9 ]4 C: n) W  l7 \! Y& R4 o
to-report creat-credibility  u) o% a* u4 e  S0 X
report n-values people [0.5]5 h. H! U  Z3 k7 A
end( g2 J. J5 g# R' n1 G! y

5 m( i9 Q: ~2 z, t5 ~0 Qto setup-plots; t9 B: e' q9 K4 K0 ~3 q$ b; [
; @  h8 E( w# S" M
set xmax 30

% G9 B# q$ t% |4 v% C: Y  L/ i& w# h* Z* G( D! p# w
set ymax 1.0
3 D9 [8 c, C7 k% g' P( `

/ F$ ~/ w1 |" ]6 g* _" O# ]# }clear-all-plots

. X$ M2 E& S" Y% a; \
- Q0 K8 v7 b. ^/ H# e% c; xsetup-plot1

& V2 B0 c9 q* ?1 ?# o* v6 B7 p$ k- k
setup-plot2
+ s( Q9 I+ S% x

% a- h3 p, d/ Gsetup-plot3

# p* v$ u! ?$ n5 V4 }: J5 Q+ _end
3 f3 U7 z2 _7 p# f( }) O9 J) U/ {1 t* \5 L( ^2 g
;;run time procedures
9 R8 X; I4 M. L' E* \0 q0 ?/ q- a4 s2 Y$ @: l
to go9 ]9 }- T' `7 h! Z* _8 P* U( f- _/ s

1 D. _. G3 |% e# Hask turtles [do-business]
; Q3 K# D( H1 j
end
/ u# R5 L& U2 w- S) @
) L% u, x; L7 O9 rto do-business 1 S; b, D4 X  V) w5 `+ u
/ }, x! c" f4 G
* x/ i( j3 N+ c1 D1 d
rt random 360
. e. _4 V3 u+ p( t5 p; u( Q
- U$ O+ E( _: H
fd 1
; u* T0 V9 z( x+ b+ M/ U; @  H

' y% b/ s4 p) T" Mifelse(other turtles-here != nobody)[

; d; R$ p" D& c! p5 u0 j4 r$ G* g  r5 B6 T
set customer one-of other turtles-here
, [7 a& u' a$ S7 |. F3 x5 y( j

/ o( {. K0 G& L6 _/ {. E1 F;; set [customer] of customer myself
- H" ?7 `3 R9 t/ k
) E. C7 k5 l2 _) [+ k2 L+ O4 K) A& ]1 `
set [trade-record-one] of self item (([who] of customer) - 1)) l* N% I4 P1 c6 H% l5 q- {6 j
[trade-record-all]of self( O) T# Z) e% Z; b4 f( Y' |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 `8 Q8 T: h6 S  T

  {# S" T& E) H3 Tset [trade-record-one] of customer item (([who] of self) - 1)
1 y, Z: [) R6 j5 F$ Z, g[trade-record-all]of customer
& M) w- C- e- F* X! V/ ~1 F4 m
4 a6 q5 V" j8 A* \1 ^( y# \
set [trade-record-one-len] of self length [trade-record-one] of self
! x. P' j' z& P
3 F- B, M+ e5 w$ D! n  S
set trade-record-current( list (timer) (random money-upper-limit))

/ M2 Y$ N" A$ S8 X8 R/ W* t0 }2 I+ i; S! P4 S6 `
ask self [do-trust]! ?5 {" G: t6 U) x: b0 r
;;
先求ij的信任度
( N7 u: D4 s, u' J% |
) R" O* R1 f; Oif ([trust-ok] of self)' Q5 O. [1 K% \3 P5 o6 ?
;;
根据ij的信任度来决定是否与j进行交易[2 ^( |. a: \9 U5 B3 s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 S( w. b& \, U6 n! B) {, o

6 @5 j2 H" h( ^[

1 ]- }2 l4 `8 h; R# K+ ~* K. N3 K) D  d/ N
do-trade
' `6 Z0 @- [1 t! I0 ]7 b# }

1 H6 D4 H' C) T8 d' i  E- _. I: }update-credibility-ijl

  A  X$ O$ Q+ s( C
3 M0 H( X) Z( d/ |update-credibility-list
7 M0 r  C+ c6 E% {. l' F/ W1 Y, \# W
; \3 [6 e/ m5 T  b4 F

4 x: r3 X, m3 c9 _# ?2 ]update-global-reputation-list

$ P# @( b9 B( U. @) ~, c$ S
9 e- l; U% x: l7 @7 ?poll-class

/ ~4 h# J$ U2 E! S( I* ?2 k$ S* C% p. I' `9 ^
get-color

- m0 [, v) [3 L  H! X9 E, a/ @1 b6 T
]]
  L& x7 D' c- E3 ]8 U" \- ?/ X, J% x  j, \3 ^# o
;;
如果所得的信任度满足条件,则进行交易( V; G+ l+ o$ H* b9 c5 h! W
0 J2 B" K" i; v) L- W- Y/ Q
[
  V! v9 Q  \: [9 _

) |- q; T% x' mrt random 360

: N) h1 B& v: t- N# ?" J0 n1 ^5 i
fd 1

( W9 ~8 I' d( \9 H- p6 q% x( I2 e9 F* g6 W5 S9 c* Z; W* r
]

: {6 C4 w' H' W& @$ w) i( c- o# Y  ?7 I0 ~) D) d* N, x/ B' j+ \
end
: P( ^" z: |* c3 V) _

5 I) o  n* z* x8 rto do-trust ' S& I! M- s! m5 ~6 J5 ]2 Z
set trust-ok False* N  w! l* R0 {$ ]. ]6 n

7 z' S( E' b2 c6 f
% j2 y0 C" f6 h. U# e) p
let max-trade-times 0. A9 O5 P8 A% Z* t. z) Q7 x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; K+ j5 {- m! V) L% d* p
let max-trade-money 0, \$ a7 d% [3 k9 M; h
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 G; T) y: s/ @9 P; slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! W0 K/ D' y* U7 _' K. c

, y, s  C+ u* D- D/ O( }

: R; h: N" R+ eget-global-proportion% X' G! O, S* V  [8 T! l5 i. I2 h
let trust-value  i/ K% }; X6 a: X* ~  g
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( D) Z/ @2 W) D5 c
if(trust-value > trade-trust-value)9 X) @# n! `, V+ H6 e( K; h9 V
[set trust-ok true]- {: r& R+ B  a3 [8 p$ q! M) B8 h
end
( y# ]  p+ K( f6 h
3 x1 _: S6 ?4 ?# A; Ato get-global-proportion
) D# o) ~& _; F- k9 Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( _! ]& X" E3 c& l% K[set global-proportion 0]/ [" x7 z7 X' P+ M
[let i 0$ O. Q; Z( o: q. z
let sum-money 0, Y3 _4 t) [+ n9 n% m7 c
while[ i < people]$ `' o5 c3 D" t8 G- q- V7 o
[1 r$ ~! R6 X/ `. ^* G- U* ]
if( length (item i
, I9 W' Z/ a2 {( a. d[trade-record-all] of customer) > 3 )

: s3 R- J3 ?$ a5 `[' O, Z5 o- `8 w4 o/ R3 v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ }8 ?; l$ m  V. h& u- `
]7 I9 Q6 f" U  y/ Y2 Y2 _
]4 p. n9 O' H4 k% u8 M3 [
let j 0& ^4 j/ N6 [% X5 y5 H  Z/ z
let note 0: z9 }; K' T, A" M
while[ j < people]6 ]! S& U9 }3 a
[
/ f! n2 E9 R: `, C4 @if( length (item i9 _  k. R: G" I" U# I
[trade-record-all] of customer) > 3 )

% e; x: i" F$ g1 u/ y# x$ C# a[
. O6 }# h; B/ u; }7 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 e" b$ z8 s2 [6 c, v/ R5 l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- s3 Y8 U3 \* q( H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% r- P7 S; Z3 P/ g6 R]
! ?' E& j* c/ H]4 U" m  s9 Y1 G' |  s
set global-proportion note
1 i3 M) d; G" F, S. z- x]( o8 z& ?- k5 z' h5 m5 s  Y
end
4 q! A5 x2 x- A) g2 J( |9 `3 g) p" l" a
to do-trade5 r) F. \! P# B) y
;;
这个过程实际上是给双方作出评价的过程0 k4 }2 ~$ l, D2 k  H9 r6 i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 J; `  ]) S& B$ ?% h' Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( M- G( s8 ]* z4 {
set trade-record-current lput(timer) trade-record-current
. u2 K9 m- d* o8 A+ t. {;;
评价时间
& X1 L7 g+ H4 mask myself [9 m1 W8 i  b$ u! V0 u& L5 z
update-local-reputation
- F) n  @* c9 G) ~. t6 S$ ]9 `, Nset trade-record-current lput([local-reputation] of myself) trade-record-current
. p- l* _* s/ P; k: {]
6 z1 H. V7 \, Z4 Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- u) w% E, V0 E) v% v1 Q8 @
;;
将此次交易的记录加入到trade-record-one1 V8 K  q5 U; o* q) u
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 h/ T, |' `  D0 _1 U( e- t% Q% s
let note (item 2 trade-record-current )
- f- R  i' @3 u0 {set trade-record-current
, q" h1 K! l7 f& h9 g2 s- v, b(replace-item 2 trade-record-current (item 3 trade-record-current))

; m- J, Z* e3 @; {# Tset trade-record-current
# ]; z: e: n3 P$ T; W" l0 l( Z(replace-item 3 trade-record-current note)# w4 j9 I6 D2 P  a" n: I! ]+ m! q
6 h4 h6 F  z4 g

7 X% h) a- Z8 U( Task customer [
& [5 K1 R& t  T( V/ L% B! zupdate-local-reputation7 X7 o# p  A' W- s) L4 o
set trade-record-current
0 Y, j+ M- n, @4 d6 Z1 g2 a(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* W: ~* B" r7 n: t. s! h]; f; l& f0 R* l

) ?+ g1 k! q9 y0 Z8 P0 \3 ?

9 R; E- D7 `, j9 r, q4 U3 B9 rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, @3 s: N# a  l! C: P* A
7 r7 L3 i3 f6 I( U4 Z& H8 J: ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 Z! r& N% m( O7 G' ?
;;
将此次交易的记录加入到customertrade-record-all) m% e* m# i% A
end
" V, k/ S' u* h/ k3 J' L& y5 ]9 E7 ^
8 h4 g6 z* u/ K4 Yto update-local-reputation
) n3 [9 d& E! L$ t* m/ Pset [trade-record-one-len] of myself length [trade-record-one] of myself
+ P: g5 X0 k- G& g2 S. I
) b0 m$ R: x+ n1 x& u
: b8 F: `+ b6 K5 X- a! N0 e7 {;;if [trade-record-one-len] of myself > 3
8 F3 w2 \3 [- B; Z& ]$ y6 _
update-neighbor-total
$ X* D% F3 O  r. z;;
更新邻居节点的数目,在此进行
* d5 M) H, r5 ?. ~let i 3% c7 g, \! j& Z6 ]
let sum-time 0
' d% a: ^, V6 M5 bwhile[i < [trade-record-one-len] of myself]! a0 d4 k: p* b; [' F
[* r' F+ a6 `0 G9 a$ a5 |4 Y2 J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 |0 K* u! G  P: u
set i/ m) z. w$ L  [, |; ^2 v
( i + 1)

$ s* Y* v& p: c8 h]# K1 N6 X  q) F& n% y' `# |
let j 37 M+ X( a- K7 {- K* p
let sum-money 0/ z* D1 S, ]; D  e, c# S
while[j < [trade-record-one-len] of myself]0 J1 H( s3 O3 n$ q5 d
[
/ R- W) _% ^/ s  }8 {1 _set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ x3 }, Y" f/ X5 W( y" H
set j  ^- l6 i; I9 |4 B' M
( j + 1)

) K" u# k. i6 `/ S# h]
8 P0 V0 F/ u; @( }# t" i& P3 C' q5 Alet k 3
& r+ J$ ~8 W. x$ P, K) y8 M2 d3 N0 zlet power 0
# [) \# Q' ?7 N& F  B8 M) c: Olet local 09 C+ V; N9 g' K2 Q9 E( \
while [k <[trade-record-one-len] of myself]
7 ?# \% V  j& s. Z7 ^, L[
" M' ~: l1 o  ?7 r/ E3 w7 ]set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
' s7 x) ~+ b& X4 S9 rset k (k + 1): e2 ~( s: F' b( v% r
], `& _4 u$ u" O; h- K' k
set [local-reputation] of myself (local)
$ g* V4 I- O; V! kend
" U" v0 J- [. _$ @9 z) g# t+ ~
+ M& f1 J) h) {to update-neighbor-total
7 d6 w5 P( t. B. u' }9 v8 K
4 E, ~1 n7 _+ X$ `' T3 c6 z3 mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) j0 E: |# I- ^! @; f
7 }% _4 Q  t7 U" k  c
* j- _; c" g8 b; h
end
& }4 t0 A. j( o8 e; F7 o" R8 F+ N/ _6 h% {+ }, @
to update-credibility-ijl
$ H$ [/ H+ a6 p. W% W( v4 O
, O9 t8 g7 `) g. f;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。& k* H( H" {2 d: I3 n4 o0 }. z! t& h
let l 0
7 S6 o1 J8 |/ l* Y1 W( I7 Ewhile[ l < people ]7 {: a4 c" g! q; Q0 Z! {0 ^
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价! l* w" E/ U% |% a
[
0 l; y. O0 r; ~% b/ S: b. Y% Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)# m  u* ?, W" `' r' @  S7 [5 y
if (trade-record-one-j-l-len > 3)
0 `' j8 C3 F" Q( K/ x: F4 U[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
0 i4 i: U; |/ Q- T1 U' ]let i 3
/ w2 E) i$ b, g; b8 [let sum-time 0
" K8 K- M  q1 L, Zwhile[i < trade-record-one-len]+ N& e* {% a0 M. ?' A3 _
[
3 W' x5 l4 u; K, C1 Aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: d$ B0 Y( ^* y! Y9 {set i
# E) G0 `5 u; w: o6 b( i + 1)
8 w- ~$ H, W+ q% I4 s7 `! S- o
]
  Y) l" U8 C. m/ ]8 ]3 a, Glet credibility-i-j-l 06 W$ ]# V/ \4 I$ n# m
;;i
评价(jjl的评价)3 Z( h' ]) H0 `) c! h
let j 38 A9 M" E  K& T* r* R
let k 4/ {# O9 b8 C; U: H. [' V2 `7 f
while[j < trade-record-one-len]; V% d- h) ^8 T+ V9 k
[  g, D1 J) C2 s( s
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
* T6 P' R' |; I- ]6 Uset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
+ s+ S5 a. P- _: ]5 T8 iset j" W: d. H/ G* |& r* m
( j + 1)
' G( ~9 |9 C! V3 w* k- e7 V
]8 t! v8 c, `3 O/ i( ~
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))5 h6 [9 c- I: G4 E0 s# N) B
7 {$ t7 [* [$ L' o
" a% _, U5 l8 D$ t2 ^- z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- E) V/ Z" A; E4 E2 L! S3 E" L
;;
及时更新il的评价质量的评价
" E5 j3 e7 T( k  x. w2 V0 ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! y$ ^/ A: q, p, d. lset l (l + 1)
' {% H- E# O$ @$ ^( m1 n  g]
& y& c) d, `, m* x' ~end  w: P7 h( j+ a
) u6 d1 I6 @$ C( {9 D5 \" _1 _; w1 q
to update-credibility-list
7 _* u  g! o. d6 t) J% `' tlet i 0
6 p6 f% `' {9 U1 P" lwhile[i < people]( H! m* L) u/ n, _
[
  h) [2 W" f$ Z2 o3 t" klet j 00 n7 }+ H  M  M% A" B! t. ?
let note 0
/ X8 _7 }1 T$ j4 T* clet k 05 L% R' V- \9 F  |  K
;;
计作出过评价的邻居节点的数目6 @* R+ e. p1 [% y$ S: v) k8 Q7 E& I
while[j < people]
  v5 [" P- C' g1 R; @  d4 r0 Y[
6 _5 M; X5 N' e1 t- Iif (item j( [credibility] of turtle (i + 1)) != -1)
0 _* e6 i4 ]6 P. s6 J: _4 e; l# B( I;;
判断是否给本turtle的评价质量做出过评价的节点8 L  R+ u( v* F" W3 H" M
[set note (note + item j ([credibility]of turtle (i + 1)))
6 D/ C) G' }0 I: t7 L! y9 p) s;;*(exp (-(people - 2)))/(people - 2))]
4 _7 ~- E' y! y3 h6 l: B! C4 c$ f( d
set k (k + 1)
' ]! M8 R: ]/ g' x1 V' k" H]
- e* _( b+ @9 y) xset j (j + 1)1 z' x+ l* M9 w0 x- R+ ^
]+ Z7 s0 M, v5 j0 K  L
set note (note *(exp (- (1 / k)))/ k)
2 R0 \( F1 ]! L1 p: Tset credibility-list (replace-item i credibility-list note)7 P! H/ D+ W9 V+ q+ e- l
set i (i + 1)# D% t2 B/ V2 j
]
: V5 r6 g! F4 eend: [" B# C+ X8 j# U% W

; Y) e, N; ~) Mto update-global-reputation-list) @9 Q1 W8 F6 [/ q
let j 0
8 L6 `' n7 B/ [. t8 H7 ^$ ?while[j < people]
3 Q" ]4 I" ?9 M2 h! u[% X/ n/ J6 R3 |5 x
let new 0
! q% z0 X5 ?: j6 H' p3 _/ Z6 d9 O;;
暂存新的一个全局声誉
7 ^7 z+ M9 ?" g0 Hlet i 0
/ v6 A  @( R2 C) j7 [/ Flet sum-money 0
7 ?( `8 E& b' |3 clet credibility-money 0
9 U5 S; _) G* P  M7 m' ywhile [i < people]
4 T8 j- f1 ]) t' ?3 L% P0 f& n7 u[0 p- e8 _4 y8 r& b$ D
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# L+ N9 @/ B. U2 L; W  ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 M! O1 O1 M- w  y, S: D) i) Z
set i (i + 1)
' h4 k" s/ L( V. a7 R]
! Y. O- X9 i, P, D9 @+ K1 ?& n: y- clet k 0
+ F; q9 g: g4 y( ]' v5 d7 h7 }let new1 0
& D% ?1 X2 q& {  k+ Owhile [k < people]
3 R3 n3 e" M: O4 q# c9 i6 c[3 r! o, E* M2 F% z# u
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
" \& h, F: _: y# X1 \( E! d7 h/ Kset k (k + 1)  w2 m2 r7 j% {6 t: v8 D  l. C3 A+ F" n
]
' b5 U4 {, r+ K. m& Z% \+ X, Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! @4 Z1 s1 V+ {' uset global-reputation-list (replace-item j global-reputation-list new); U4 e9 n0 E+ s/ {; C+ L% Z9 F
set j (j + 1)0 h6 s0 U8 l* s1 o  o
]
. a/ w  G; c! a4 z- {/ d2 h' n! Iend
, z3 k4 ^% }, h6 V" b5 q; H! o& J" R! U. f2 @0 R/ `- f/ u

: z1 t3 j/ {$ z# X( z
& M% U. o9 W% L0 E% M$ S# ito get-color  G# y! P2 N( b# Q

9 Z' s6 i, ~) S1 Q1 e" ^set color blue
  P6 w# S+ L8 u- ?% ^. E4 {( s. l
end
0 }) C6 [- `, x) ?4 v# p3 M/ W) E* h: l% Z! \3 [& b. c* z
to poll-class+ `; g/ o# D+ l  a8 Y* A/ |1 M0 W
end+ T! ~) h+ {( J3 H$ u% C5 }

* P3 c6 |% y- q9 r0 z- ?to setup-plot1
, |0 U) v$ [: p2 X6 q& ]
% W' i3 l) P0 zset-current-plot "Trends-of-Local-reputation"

" Q& B4 z8 B* H" u. Q) I- W/ R  h" |& o! e- j; W
set-plot-x-range 0 xmax

( `5 d/ B: |* e
8 o/ q6 _2 n! d  h8 }' r+ Eset-plot-y-range 0.0 ymax
6 H, f6 m+ @- X  H
end. |( n0 ^7 q, g9 ?9 C( ^/ X
# F# p  Q$ m( q$ v
to setup-plot2
1 a2 G% N8 h/ U4 u1 B
/ Y5 n5 ?2 B  m# oset-current-plot "Trends-of-global-reputation"
0 ^/ F4 T% i/ D4 J# ]
. z) i5 O5 O" H4 T/ q) A
set-plot-x-range 0 xmax

$ Q" E/ e- d. T! W# a# v
# ~5 N5 k. g; j7 ?/ A( k1 `) \' lset-plot-y-range 0.0 ymax
) h- T5 s/ M& z4 e# r" i
end3 b0 j6 i* u. B' g/ ]2 b9 ^

. Q8 c# x, i: ]  `) Qto setup-plot3, n% f8 v8 s# d0 r- m7 v" F! u/ [5 G

( N9 k: M; M+ `0 D/ r' p" P0 j6 q  kset-current-plot "Trends-of-credibility"
) X( Q5 J! S1 u4 f7 T0 e2 r' k2 h

$ s- H" n  W" ]  Q1 }& ]: F0 ~/ jset-plot-x-range 0 xmax

, ?7 O$ u0 B# a6 y8 P  c2 t
% O% l* o% L" x8 aset-plot-y-range 0.0 ymax

" y2 y/ l5 @  e' {! t# fend
# p1 s) \" e1 U9 b/ ~$ V- @, ~5 U. T( L* L; x. c
to do-plots
7 u! [% h5 T8 c1 Oset-current-plot "Trends-of-Local-reputation"8 y' X; ~0 O8 E; q9 `. K0 I
set-current-plot-pen "Honest service"
# x) N4 |- L* N. M$ N1 L; z& N+ Mend% u( K, D+ R' M/ o0 w
, q: H! n. @; L1 x' ~
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
/ \9 l. X* q/ b( \+ o; T( s% `1 ?6 H6 z2 m9 ~
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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