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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:
. Z1 _- E: C! ~2 Y# ]to do-business
7 b+ [0 g. V5 o( k& P rt random 360
4 @, Z# N- S0 K' Q fd 1
. z- T. E) `8 q ifelse(other turtles-here != nobody)[
+ v$ ?$ l9 I# y- E4 A% [   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.$ m5 D( W* _8 F$ h  r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 d: Y' d" N$ U4 ?# Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ j$ O" n( q' f5 a( o3 g- s* l   set [trade-record-one-len] of self length [trade-record-one] of self
  u* J( q, m. q- R9 |$ k   set trade-record-current( list (timer) (random money-upper-limit))
+ P) G3 I- T: H+ r( ^/ G* v) g* ]5 x
问题的提示如下:# v4 J# ~7 O8 g7 k

4 `' w6 V4 {6 h! G3 merror while turtle 50 running OF in procedure DO-BUSINESS9 Z4 [4 r6 m, P: S) j5 `
  called by procedure GO% W. S( M2 V  U' f6 v4 Q2 [9 r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ U7 N; n0 c- N
(halted running of go)
9 V4 I4 @: N" }  J: I3 I
- \3 t  t3 Z* i' B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~~
$ \* e& q. }0 P9 e( c+ C7 ^; N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* J" \3 S: \) \$ U
globals[
/ z9 \/ V0 S: t) c3 x9 axmax
4 ~/ C  u1 G1 y6 \ymax4 l0 _5 [) g+ ?5 E. \) K* t
global-reputation-list
/ {; J! [6 m9 j1 c( |( X8 A2 H$ T; {. N' @- t. k
;;
每一个turtle的全局声誉都存在此LIST
1 O# h2 e: o2 m1 J+ p4 m' fcredibility-list8 _1 z3 e7 Y4 S: }
;;
每一个turtle的评价可信度
' L# g) [( F, D' B$ Qhonest-service' u7 g; `; E5 x4 q! h# A
unhonest-service
- j( ~/ @2 Y7 U0 Roscillation
' h/ U1 Q0 w- c, J: ?% Z* n4 nrand-dynamic
- p) N- v6 q, u5 u' Y' W], \* V* m, ^/ S5 P- O  ?" D3 E
$ @) R* g1 i* P1 g. t
turtles-own[3 Y2 r5 d& I/ Z  u
trade-record-all
' p2 [+ j9 f6 M( I;;a list of lists,
trade-record-one组成
9 J0 |" @4 D6 i& z4 c# Htrade-record-one
6 C( V: _" _  t, z' h7 |1 G- ];;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& V) y' g" g" o/ e" b# L0 T" ?4 `' A0 f; _  e8 a
;;[
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]]+ Y  _3 e# C' m7 N. y
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]9 Q3 {9 u# Y* r7 y* F0 H& y, J+ P4 A
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list9 _7 A/ W  n! k! s
neighbor-total3 p7 M9 s/ U& O* z; p9 G) l
;;
记录该turtle的邻居节点的数目5 h8 g3 X! |# K7 Y$ j
trade-time
; Q" m5 U, G: ~$ s/ P: G0 f;;
当前发生交易的turtle的交易时间* c+ o% ?, I7 `; G, B4 X9 B- Y* D
appraise-give
5 k0 |0 o* k' ?  w4 c;;
当前发生交易时给出的评价
, p6 w6 d/ q: D- |* ~appraise-receive
/ r: X) [$ p1 D$ V% T/ ~;;
当前发生交易时收到的评价
6 f: S& s! E( n9 |8 T$ jappraise-time: }. g! w5 C, ^7 M& g# R# r( K
;;
当前发生交易时的评价时间) j) x# A# `) u; y) X6 u9 s* t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 u6 e1 M+ |, `/ i/ ~: t
trade-times-total: r, r4 {; p& u2 L& _' [( {
;;
与当前turtle的交易总次数* l) C3 c" G# z/ J9 ]# Q( |
trade-money-total
( k( U! a# U* w& x;;
与当前turtle的交易总金额
4 k& q# c  c& Ulocal-reputation
, H: a$ z: }: Z+ z6 ~+ ?; Gglobal-reputation
& c! g' J% k$ j2 |* ^0 W: C- Rcredibility
1 n1 e2 P* r2 B( e3 Z$ q;;
评价可信度,每次交易后都需要更新
, W$ q! {( p. I6 z) Icredibility-all
- M2 R0 d  v9 ^2 V% l+ {7 P;;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# q1 c/ f! ~/ s
( n2 b& h' R* b4 c0 ]# K
;;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0.51 Y3 W/ x3 i7 j% g5 N" p! A* U
credibility-one
# ~# A& {+ |+ k2 s. z+ A( Q8 b$ V* P;;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people6 @1 b( q; y: s! J
global-proportion
$ t) |1 K. X- W+ R# vcustomer9 q/ g7 [' G( B" Y
customer-no( B4 s3 }/ j* R7 \) h
trust-ok1 V; S- F! ?! D% n6 Q# Q9 B; S
trade-record-one-len;;trade-record-one的长度
# ]- f, q  Z8 d% D" |. U/ T) y]
9 |& t& M9 x6 C0 w
5 X9 q& B! s) {;;setup procedure
* U. a0 c- P; `- n3 t! ]
3 E: Z& n- M. ]to setup" |: s4 ?( F) D/ M

" x; a/ Y: A% R% ?+ D: a" Wca
. h, r4 a1 I! m! W+ b: b* W9 a/ H/ O

1 W. @8 R& z" I  d2 `initialize-settings
6 O+ v# e6 M, u
- P" \0 @. f# F0 a
crt people [setup-turtles]

8 D  S7 N, G( i% @4 Z5 M! X5 f
* t& |: D2 F9 M- D4 @2 U) [/ D3 Ereset-timer

2 `# w7 l7 w$ L% B: T1 Y9 k4 ?+ h. U( X4 ~  k3 n- M7 z
poll-class

  y+ P) w# V' Z) W0 j
7 Z) Z5 m& Q3 ^/ U% C9 A) Q$ a% Csetup-plots
3 V, R' A6 ^7 C; T
6 E2 S7 j( ]  h; l' d& V* r; L
do-plots
& a& L% y+ ~# @- V4 \2 y* d9 L$ ^* k
end
2 B( h" n, W- F: I0 \8 P. R# _1 P$ F* T! v
to initialize-settings
: d( U( P: I5 d* _& ~. B
4 K( {0 G" y0 X2 u  kset global-reputation-list []
' p9 r: f6 V  X. j& R% B

! Y8 }& \( ~# R; Fset credibility-list n-values people [0.5]

, @; U/ x6 i# l8 @' e( x) ?$ T! F
2 V; o( l8 h  `3 T" F) c' G7 ]4 Uset honest-service 0
' l& D0 W  h# Y1 ~. |3 Z5 K

* }! F: ?. v7 O2 j; @# d" B  H& Lset unhonest-service 0

( ^3 E* r+ t- C4 B1 W
& t. g) W! k) e6 Tset oscillation 0

+ w: K: C" R/ v! [4 N
' h: [6 C7 i- f9 ~; ~  b8 }4 v! Zset rand-dynamic 0
- n' O& ^* g# _
end
5 R' g! ~4 |& c! _2 e; }) J
' @1 }" ?& U. S7 [to setup-turtles
: C. g" B% D% r7 U- U; Nset shape "person". w! y+ @) W! a5 e
setxy random-xcor random-ycor
! z: Z- s  I( Qset trade-record-one []% Y& Z# `! J5 a$ c' N

; q( A$ [8 D! B% I+ l& [set trade-record-all n-values people [(list (? + 1) 0 0)] 5 S0 S9 K/ K9 W+ M

$ d! a! e% {' F4 H; A& Hset trade-record-current []
& H' u" n, S$ L/ |- A1 B0 Jset credibility-receive []
9 g$ D" a* d3 B9 C% qset local-reputation 0.5/ O/ l) V8 p$ h* |& }
set neighbor-total 0
: x# s  [2 h" Bset trade-times-total 0
8 v% b: x0 T4 _; Q" mset trade-money-total 04 E, [' w2 B3 [! y  i* M
set customer nobody
; e6 F; f6 C3 U; o& \2 K3 Vset credibility-all n-values people [creat-credibility]
. @4 p2 b  |- l- J3 ?" vset credibility n-values people [-1]
3 h/ R6 Z' \+ B) k# `& x% Tget-color
5 x7 J- O' U0 c" a# f4 V) C2 R" [
8 ~; T, @8 Z3 X5 ~) G* @
end
- `, i; k, ]' J* Y* n
. q& {9 u4 k% y) Zto-report creat-credibility% L- b$ Y& R) Z( W+ F
report n-values people [0.5]
# D2 L+ d/ G/ L. U5 U  j( E1 Hend( W* c) u$ M& Y# `5 _
" ~. n' S7 s8 e% s' ]( O' l
to setup-plots# R$ M* A5 {% ?( T
! e, E1 ?% |. D! H. d2 f6 q3 m
set xmax 30

% e+ G7 W1 I5 ~7 H4 A! k
( |8 L2 ?' F) P$ C1 Xset ymax 1.0

% g" O0 \! y$ y: V
6 l0 [8 A0 k* E  L4 n  Hclear-all-plots

* T4 _: n, D( z5 m6 n3 H$ K4 Z+ o% ~
$ r3 Z2 U$ n$ @7 ~( e6 C* V% V! G6 D7 Fsetup-plot1
2 {  X4 {5 J6 T" O+ x

7 A* s/ c1 F3 g2 _- u1 n3 S$ o4 e. m) osetup-plot2
, H' ?8 b1 [) a" x2 t; O

( V* e( A& z. y( H9 j* B3 |setup-plot3
$ @3 q( m$ o+ D. U! S9 L3 s
end
. l- @9 N4 }* a' N  k+ O* d$ [$ I7 K6 m6 ?( K
;;run time procedures
4 T" D! t. ~4 {
7 `- j7 \! v% i& b6 Rto go" L( M' b( U6 f0 ~# `4 ^1 _7 s
& K  F4 _  N8 K
ask turtles [do-business]

. k. X4 e! F9 o9 pend% B0 {1 e3 P" K
- }8 @0 H- f# }+ `6 P' h
to do-business 7 x( {( v" M4 s; \

3 I- K* [1 j+ D9 M% H4 k
; [9 J0 i3 S  H* R3 p5 M3 g5 irt random 360
6 f. p6 u  m9 |! V
* l( T7 z3 h- u& D
fd 1

% Y) U$ x* q% S$ j- D5 e6 _" `1 t% W. k
ifelse(other turtles-here != nobody)[

5 i; \) F: M* E
7 x  |4 _, F0 K$ y% I; D4 Xset customer one-of other turtles-here

- P3 K: {( z! p
  f( o) t" A+ J. w;; set [customer] of customer myself

8 _6 R% Q) L3 x; O/ `
+ k# V3 @# \$ T% J8 d0 dset [trade-record-one] of self item (([who] of customer) - 1)
* `8 d& X% _1 |4 h; H[trade-record-all]of self* d, E1 l' p$ P" h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  g3 o3 Q- j+ W/ f

( o. X3 J! L9 j9 w) K  \set [trade-record-one] of customer item (([who] of self) - 1)
) E4 J$ i3 p& y9 Q[trade-record-all]of customer

7 s9 D& @& `/ n5 |; \
) z: K4 I( }# o! f0 N  B* iset [trade-record-one-len] of self length [trade-record-one] of self

: i$ H9 E9 D! t! D" d1 N; _# g5 u7 T
set trade-record-current( list (timer) (random money-upper-limit))

9 a) f( T  J% h4 z+ H% L8 x. O# J% Z0 z3 u  P- V
ask self [do-trust]
% D1 P, l& D8 l;;
先求ij的信任度% o" O/ a# a) v$ v& T3 S5 ^* M

* r: ?$ b' S+ `if ([trust-ok] of self)0 ^) k2 a  w" ^9 k7 E, S: \4 Y$ n
;;
根据ij的信任度来决定是否与j进行交易[
, }7 X" U3 M8 v; j5 Y6 gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' K0 S% u! y& t" }( l
5 L5 h9 D; D! s[
: i2 @5 S; k" j, J- H2 F; r5 e3 O
( f' y$ C3 P+ _9 n: }0 f8 u" s
do-trade

0 x3 @/ _6 k9 x( s: ]; ]- z! C! G( b. W. [& x; E1 o
update-credibility-ijl

% |& s, K. V8 q0 h8 [0 r% Z+ h$ L5 ]9 o5 P
update-credibility-list
. S) W6 i4 ]/ [8 P' J( X* P
& r. y$ F( d  m; \
; i& e1 o. p2 {7 s
update-global-reputation-list

3 @; k. Y/ n3 d1 ~
6 B6 }5 i6 }; s5 r' Lpoll-class

( [4 Z$ P. ]4 X
5 d4 B, P& F2 e/ m2 `& ~; j8 w9 q" mget-color
* _" `/ F: K" h; ^
3 {, ~8 D6 d8 h: K. W( s
]]& u0 s5 [9 A! y0 ~
: O9 ]% X# T' _* e4 M) {, B
;;
如果所得的信任度满足条件,则进行交易
* |5 r" P9 A, Q) V# s; l, U. G0 h2 v2 z% Y  X
[
( B% k- C5 K0 H8 \  o

/ O- O, a8 H& \8 {# O# hrt random 360
) P! X4 S4 s3 d+ L, q

  T& i- y- m  n+ J# C- Hfd 1

; o  B( X+ I5 q
: k. ~6 V4 b5 j# b! C2 V]
$ G2 X3 a; I! A4 W4 D

1 I. V# s$ _0 y. A! zend
' @! A" O+ [( `1 D. h- m: ^; f
! O/ l* T8 f& [. P4 i, I/ [" ]- e
to do-trust
, N: b* L& x$ Kset trust-ok False
8 S  v/ }% C( A) {
/ k# `1 P. E% _* q' H

$ ?1 R$ i! P8 q8 \* S! ~! R/ @let max-trade-times 0
4 ]! u/ X- j; l$ fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], h1 l) e8 Y3 |( m& m& P! C
let max-trade-money 0
5 _6 U$ L% V9 V. oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 R! l8 e, l) A' z* ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% f8 T2 Z! H, U5 R8 h
  J9 E8 T8 B0 v6 ^8 |
% G# K' I# _8 ?& X: c/ w$ v: i  z$ T
get-global-proportion
) o2 x) e( z% M  c) N, f4 R2 f8 j& Mlet trust-value; R0 [: P$ v( I
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)
  c6 r: C7 Z9 c. C% A
if(trust-value > trade-trust-value)
$ y2 i. F! p, r' _* b' Q[set trust-ok true]
; Y0 o# Q, N! I. z# xend$ M, h5 f1 h/ r3 k) C
6 f9 [% V: p$ z& ^3 R& x7 K) I
to get-global-proportion
  J5 s+ A* B" s& Y+ b. Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ |$ X2 o: o4 C: \" H! [: ?
[set global-proportion 0]
* D# d9 E+ g4 I: V6 A( H[let i 0& X. u% s! [, X3 d. X8 e
let sum-money 0* u: w; j7 V' Q6 K0 x7 s" O
while[ i < people]- X, r2 ~0 u. y+ I. U3 ^
[. b: \% k1 O6 u: B) P! {% L) F- g
if( length (item i. L) P& x! M5 \4 I/ ?
[trade-record-all] of customer) > 3 )
4 T. v' ]) G/ x! W- v2 h
[! @& _* ]' a4 n5 T" u& _/ K' p' l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 o7 G; |. r0 ]8 w4 n: n
]
+ w! m2 K0 O( [4 |]3 B/ A( N: I/ t- G
let j 0
* x) f/ ?) o% Y# N9 e; {% ?let note 0: l; B& A$ A; K$ F! T* l
while[ j < people]: X  M1 b- H( q3 n/ W+ Z& }0 h% o
[
8 _8 {8 j' x0 E$ B5 E7 b2 }if( length (item i
' v5 ^0 }; Z7 @* ^/ Y# Y[trade-record-all] of customer) > 3 )

" W7 r; r6 s4 F/ w- H) s[
. F5 V  N' h8 S5 s% j+ gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 z, _( Y' g4 X" P( _5 j% d* z) u[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 s- ~- k% j) {' s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 u1 l. ~  L( f) [% l+ Q+ c]
4 F7 y3 J; X$ C: d+ Y! l]
5 K+ ^+ L" z/ c+ M" X' c3 i+ O* tset global-proportion note2 h* o( N$ x! H9 G& u) ~9 g# s; j3 P
]. V  J( r$ f/ t8 E6 X; U* M) S
end9 x# |1 E0 [  J4 J! ~% g
* A9 U$ n. N. ?1 |
to do-trade
4 ~# {7 K) A! H. Q8 w;;
这个过程实际上是给双方作出评价的过程
: R1 @9 O3 `. o! h9 {  `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 [. l  u3 h9 b; q9 ]2 T, N; x; S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# o1 b; |" R8 m. I( Mset trade-record-current lput(timer) trade-record-current
* k% E  v* M! C* M0 a;;
评价时间) A5 a* e" t5 `! C+ o
ask myself [
2 [+ C2 b+ v" e& ^. K' w* ~: Wupdate-local-reputation
/ D! [! D0 B5 x' L' ~set trade-record-current lput([local-reputation] of myself) trade-record-current4 c& o$ p  T( w+ ~' Y8 c
]
' B  Z4 ~% U8 o: Z. u/ M: cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( [' U2 a# k& T;;
将此次交易的记录加入到trade-record-one
; I( Z3 V8 u/ U/ |+ \% W) F  Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 O3 a0 g5 C  U' zlet note (item 2 trade-record-current )8 f  A& |# r% ~
set trade-record-current
3 W6 {4 O$ ]7 k; v(replace-item 2 trade-record-current (item 3 trade-record-current))
2 k, \# Q% Q$ K: G
set trade-record-current
2 w" X3 F; B2 x, P(replace-item 3 trade-record-current note)7 @! o9 _' w* ?% k8 j

  n& u) n5 j6 d2 u* H# x) E3 F, n' j
* [3 b* Z% O- E
ask customer [: C4 H' ~( Q9 v5 I
update-local-reputation
0 y  A( @4 T8 P' O6 m' ^% ^set trade-record-current
/ g$ o/ v1 N4 g8 G4 y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 h7 w" c6 Y* Y' p5 t]
- X3 u4 a! T  U- i7 b8 q
6 I: Z; w$ r! @' ?! C

4 q1 `1 V& a2 L% H) X, Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# \- H$ Z( r/ c8 R( E1 A" l

* \* V3 H1 Y3 j( [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( f5 G' {0 I4 W. R2 _
;;
将此次交易的记录加入到customertrade-record-all
- K1 ?+ V6 i9 N: w* D: {% {# \end
- N  P. j& ]/ a1 ~0 u$ r2 B& ?# P3 K% Z' [
to update-local-reputation
9 B6 P" X# [) F4 f# @" i5 C4 Fset [trade-record-one-len] of myself length [trade-record-one] of myself
0 M, S, E6 _3 l, M* s1 X: J! \+ T* Q7 [4 b% u5 H! a- k" G$ g
1 n- K1 H2 k4 Q5 x2 e
;;if [trade-record-one-len] of myself > 3
$ z. r4 W- _7 L( u; }5 r
update-neighbor-total
9 Y# y* [( Z) ~- _8 w8 P" o  u' Q;;
更新邻居节点的数目,在此进行+ O6 O+ ?( _! n. b' B, V: [6 ?
let i 3
: r: N4 \' _) t, k2 \( slet sum-time 0
" f/ V( F5 X5 E9 S7 O9 Twhile[i < [trade-record-one-len] of myself]' W  E: H9 ~" h/ h# r% B
[# ?" {+ z/ u- C
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) L# o) h7 K6 b2 `. X7 w# j2 d
set i+ I! c2 z* g4 o, C$ ~- D- A+ K
( i + 1)
1 E* m3 h  l/ I. h. i
]" d# E8 ?3 J5 e/ M0 H% O& E% N
let j 3
( v7 l. c1 @8 ~; zlet sum-money 0: w: [& L5 U( E9 C, p
while[j < [trade-record-one-len] of myself]
$ i& r) P7 w% W8 `) {[
0 E5 O3 |! w  F2 @2 [4 uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& O* N: F5 f- z2 b8 h! d
set j( P5 {% b6 Q& u- d+ o1 g( J" u
( j + 1)
0 m+ Z- d" J$ p" {5 a" u5 J
]
  M: Z5 O3 q: }2 |" W' s8 klet k 3  p. d3 D8 H! f
let power 0
7 O9 U& J( t1 N+ glet local 0
9 d6 k' x* p2 _5 Ewhile [k <[trade-record-one-len] of myself]
  R) R; L# T$ u0 e2 x1 e2 l[: I* a- J; V) ~  k+ D
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)
3 @) ^0 U" g& ~/ L& Pset k (k + 1)! u3 X+ a: a/ |+ R' @2 q$ ~
]
, O) v: B; f/ Uset [local-reputation] of myself (local)
# I/ z3 b* ~* zend
( [9 u, B! R5 ?  k- M5 A) S
7 p0 h3 q# S/ `7 D7 bto update-neighbor-total
' l' G4 j: q% ~, {) ?9 i
% ^7 i# L9 Z( V3 r; tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], j' u, y+ m: o8 A7 w4 X

# q6 C1 W7 O1 {! T3 A4 D& ~

8 }+ ?5 e  d, c. u' H- aend
( V0 U# p  l8 n! G" \4 n; u( e  {, o$ Z. i( i( M
to update-credibility-ijl ' X( d5 z+ x: B; p5 E" Q: C

! P" r* z" \3 I, \;;
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。
# }2 L8 l- E; z) H6 Qlet l 0
; H2 N, w3 w# P1 F% O0 swhile[ l < people ]
5 V! H- @, u. V* x;;
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
) f; ?$ ?) [6 R+ y. o  T" B$ D( l[
3 p3 I8 S$ X! }0 R: Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' W) M% L; E- q0 {. o# iif (trade-record-one-j-l-len > 3)
5 Y5 B9 {" G$ H0 c( G[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
5 e( Q' G- U  A" L; |  Rlet i 3% ^) F7 V) r3 u, n$ n
let sum-time 0& i6 Z$ j9 @, s! N: a; F
while[i < trade-record-one-len]2 ], }$ @1 A, U3 ^  c8 H. X+ j$ {$ e
[( v( W8 V& E: g) W* m. S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( m# \8 Y) T* ~6 r/ ?2 mset i5 }2 ?+ }" @; L. v; y
( i + 1)

' C; ]3 j" C; u6 m8 K2 I7 J]% p* |4 a9 {( p7 k& [  m: L" v
let credibility-i-j-l 0
, g& I. Y" c. Z( P% m;;i
评价(jjl的评价)
- U7 r  S: g8 nlet j 3) h" ~& v3 u# W2 W
let k 4. _) l4 D6 W  x8 y8 X
while[j < trade-record-one-len]
: z  V/ ]5 {' _! @+ W3 o, d! @[- i" A: ^2 Q9 b* d8 o
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
" g2 H8 D* b, R* u0 Aset 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)$ J; v/ B9 m: g/ z/ o) T
set j
  Z& P! n3 z- M& C( j + 1)

$ X# Y8 s& N; a2 l5 n9 p, P]: U" e4 ?( p' p0 p- O; ]
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 ))
# q1 s) s2 V5 _* ]* G; ?+ X4 Z6 I2 r" C( K: a

( \' t/ f4 v* \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ A  G6 J% c7 Z: r7 j% D5 E
;;
及时更新il的评价质量的评价
, _6 [; @2 s6 g% o6 u/ tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ x* }% A9 D1 A* N4 J- Dset l (l + 1); l. A! B$ k3 @# o3 N1 h5 c- J$ q
]
+ n; g- j' {  I6 w7 V, b0 f- E  y. pend
1 q+ Z$ O% b' w( J3 m! P( p3 }1 b$ R' ]6 }+ Z3 x1 l: k# i! L" s: |* e
to update-credibility-list6 u' E* E6 p! g; O4 M/ d
let i 05 {3 H, [0 w3 ^1 m9 t: j
while[i < people]
9 q6 _8 G7 ~6 ?" H[
* c! @& ~- t) T& K- rlet j 0
  ]& }* `3 ~7 ~, n! y3 wlet note 0
' H$ `4 S4 w5 m, |% Nlet k 0
4 F, U0 `3 e6 ?: T$ }' L( l;;
计作出过评价的邻居节点的数目, F; Z4 T# U- Q- n' F5 n% I/ ^4 {- Y
while[j < people]
' P8 o5 `! q/ _- Y; Y9 ^. n[" Q, o: _! C  z" t$ e( ~% \+ N) k, f
if (item j( [credibility] of turtle (i + 1)) != -1)0 v6 z6 v# W# w$ a1 R9 _
;;
判断是否给本turtle的评价质量做出过评价的节点' v) }/ y5 \7 f% ~3 o# v
[set note (note + item j ([credibility]of turtle (i + 1)))
! G- M3 K! q5 q! |% g;;*(exp (-(people - 2)))/(people - 2))]
* B$ u* N* E1 j
set k (k + 1)
; Z5 I. n! q3 L& t& A+ z6 `]" g& Y. t" Q7 F9 C
set j (j + 1)
' }, Y% B  {8 Z  Z  r; `2 u]- w( u- g! k" y$ Q$ c9 y
set note (note *(exp (- (1 / k)))/ k)' v) {. y( i9 _: h1 a5 X7 O6 }
set credibility-list (replace-item i credibility-list note)# _( r/ p# J- E  n, q# Z+ S" X
set i (i + 1)9 W' A* G% \9 F4 O$ b3 k
]0 K) v0 X2 o1 C9 o1 ^
end; b+ z; O6 X6 S" z
/ {* k8 ]3 A. A3 B
to update-global-reputation-list
' K% A  W' s) x( Klet j 0
8 d7 v6 `& U8 k1 g# Kwhile[j < people]; L: c7 R4 `: B& Q
[
' ]. g- a1 g- _$ {. klet new 0
) O/ |' O) V* Y- _;;
暂存新的一个全局声誉
& M9 i, g, I0 p- F8 Ulet i 0
! Q; ?9 X* M" }8 i% Llet sum-money 0/ k( w3 |- i$ `3 R5 k5 [$ m* r
let credibility-money 09 ?# f. {! X6 F  ]: q- f. x4 f
while [i < people]* S) x9 l* E. d$ m+ ]
[  V" L/ u* w3 h1 }, j5 o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& H1 r% i$ j2 V- Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 s  F! v- |, D" {& x; eset i (i + 1)
9 J3 C2 v' S: X" J  h2 J]* \  B! b: X7 \) \
let k 06 w* e1 F+ N+ F2 ]. N" ]8 w# u
let new1 00 c- F3 s$ h  \0 h
while [k < people]1 `& F8 D0 t: b7 C  K" @; e% ~
[
; L2 U3 H0 _  j7 E9 r  h2 dset 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)
  C! p+ Y9 P( G8 [6 mset k (k + 1)/ O8 R, v* _% X  l6 @
]
' h. X- b6 T0 ^3 J  c$ Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 o2 `9 t# l; ~1 T
set global-reputation-list (replace-item j global-reputation-list new)
* |; T5 N$ O  d7 C' {set j (j + 1)0 I- X5 J7 q) w  c& o) ?
]* @# T8 U! \. h
end5 |' X/ `  E0 T
' M* S% o4 b. I7 ?) T3 q, K
2 G9 j2 w8 P0 ^3 I
. j3 y4 w" i& E) R' `
to get-color, ]4 I) U; }+ ]' ~7 r, ]& G" U1 _
' M/ R& ^* M9 ?+ l+ Y/ W
set color blue

5 m6 ]2 d$ H- G/ Q$ u- }+ Gend
0 V( J- L8 x6 D2 s( C" M
5 t! A4 V7 {3 U0 T0 |to poll-class& i/ F# E0 M% l! Q3 r3 v
end2 Y: D# @2 n, x! Q: F+ N7 C7 M+ h
  T7 u, v4 S9 @* }2 e
to setup-plot1  h0 Y( ~8 b- N- E
% W. F" }/ ]$ e
set-current-plot "Trends-of-Local-reputation"

( |1 L' V$ v( z# g9 q  m0 [3 `1 ^% Q" @7 \' t4 S8 ^! }' p
set-plot-x-range 0 xmax
+ u! ]" F1 R8 j# z

( H1 H; o: `4 s7 V" G8 T# wset-plot-y-range 0.0 ymax
6 N8 a8 N( _# \- a. e) N
end
8 {; h9 ~+ q5 i+ X8 l) B) y
% W0 Z" V6 b' H0 F% d! N6 Z" [/ s6 Pto setup-plot2
  x* i. o. I0 D' C2 {+ d' ?1 B  G
* V( w# j' o% gset-current-plot "Trends-of-global-reputation"

4 D: N" M+ L9 _/ ^5 _+ ]
7 Y. V: S% g! b# e# G3 G! j. @set-plot-x-range 0 xmax

% C5 M  z& O$ H1 R/ v2 k: H' b
% G+ Q/ \9 E6 Hset-plot-y-range 0.0 ymax
+ T' T. l+ `  Q3 U4 \8 m6 z7 ~
end% w9 s+ s9 z# r8 _  s2 r) b

2 g9 V( [; M( Oto setup-plot31 o/ G5 O/ X7 ]) d. S

7 o) k3 a# [: M# v5 Y7 gset-current-plot "Trends-of-credibility"

/ p9 I3 L3 ^' e& I, Y
: W4 n; H% ^$ m& F/ w" eset-plot-x-range 0 xmax
7 E/ Q! r7 ^' }* x/ [' P5 ]
7 ]3 J5 N1 P+ B
set-plot-y-range 0.0 ymax
3 g) Q+ Q/ X) Y) o
end
4 Z2 I% `" d: a" Z. L) c: x
4 a  c3 N2 w7 O* M- b2 @) |to do-plots
* L4 d! d: ^, b  J0 x3 z; C+ \set-current-plot "Trends-of-Local-reputation"7 s2 m5 m6 ?  Q  Z
set-current-plot-pen "Honest service"
1 X9 w1 w& M! ~; W* Hend
5 }) M+ s# s+ x- m+ b- p7 [: E2 K# c, d4 F& W- v; N
[ 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.4 V$ T/ P/ N" k: U. F- d0 v
: Z9 u; n( X6 z( Y, T- R# n
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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