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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:
9 F3 m  C+ F# s& Zto do-business
7 f# E8 o" E: n% @( h% e rt random 360
: ~9 ~1 S5 b4 \2 y fd 14 }& N9 M) t* @5 ^- p! p
ifelse(other turtles-here != nobody)[8 w. x0 f. |" K. ?
   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.
9 l( p# n; t# j& F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. H6 G9 m- Z; n: p& L2 u* q4 e   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 S; q4 w8 `; Q8 r# {   set [trade-record-one-len] of self length [trade-record-one] of self3 n7 Z$ j" p2 U5 ~
   set trade-record-current( list (timer) (random money-upper-limit))! m! {2 }5 u% E# a9 E4 g+ ]- g
# n0 ?& `& h# k9 C8 i! c
问题的提示如下:6 h% t* I9 G! G# U+ Q5 ~: Q* G
9 H: X5 ]. @: A7 M$ i' S
error while turtle 50 running OF in procedure DO-BUSINESS$ S: d& [1 h- k& c2 j
  called by procedure GO
) ~1 X: G2 O6 Z% T  C6 [9 h0 DOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 l% `% c$ K; N
(halted running of go)6 b4 Z3 k, ?2 j) X3 ]

& k! Q, e: G* O7 K; K' ?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~~
7 o# ?7 }) X+ k  D2 U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
* F  q3 u" |, X) D9 t6 H4 C! Tglobals[* J( R( e3 B6 o+ ]
xmax
2 v, ^: \8 a2 yymax  {. ]% H, u6 M
global-reputation-list
; c' J) Y/ ?& s6 e1 }
3 L- V! J8 G( B* ~  m;;
每一个turtle的全局声誉都存在此LIST6 g5 H% T2 V5 D  \% A9 c; V+ [5 T% G
credibility-list" ?+ M/ X7 d* F' ^2 I8 p( T7 q
;;
每一个turtle的评价可信度  k8 }5 N4 a% f4 ~% \  Q
honest-service# g5 x$ a# r- ^: R- k
unhonest-service, t7 Y) v+ \; W, d
oscillation
, O3 P4 \; y: k0 C3 R5 ^  W' xrand-dynamic
0 Y* n( Z5 l+ b# l) T9 y7 W]; q" l+ n1 b; M: J
- H8 i4 u, o$ D2 x0 V
turtles-own[4 r( w. {8 Z, t1 ?$ S
trade-record-all+ u) Q4 ~! B* `' _
;;a list of lists,
trade-record-one组成9 p: _* U+ W( t! f& v  F' p
trade-record-one5 @9 p: ?6 X" M# m$ q! T
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 @0 G9 m" M" b6 R
6 n0 c8 v# I: l
;;[
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]]
9 d: E. d" k5 W8 }7 E$ N, Z( {2 ttrade-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]* q$ Z# Y5 f6 }$ }3 Q/ o8 ]* Y
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
' v" ?- c" ]/ H& kneighbor-total) s& ^- g. G9 W: V9 {/ m+ p
;;
记录该turtle的邻居节点的数目
, j; L9 J; [9 K8 btrade-time3 Q4 W2 H' Y* J( F4 l% p% R
;;
当前发生交易的turtle的交易时间
# V) L+ w7 A; j+ R; x! E0 dappraise-give
* j' ?0 d, k, }; P;;
当前发生交易时给出的评价
9 z) \# _/ E# [4 b$ _* l  d9 Oappraise-receive
8 z- }% u" Z4 j7 b  S- r;;
当前发生交易时收到的评价: B& |# q8 p( M9 [( X: _
appraise-time
1 \( m, y$ F# Z4 e, S/ ^( }% Q;;
当前发生交易时的评价时间" c3 E9 P& [. |! l. I/ \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( O0 [2 e- ]' `1 W9 G: x" p& {  d
trade-times-total$ e( J+ {: [" K; q9 h) i; F
;;
与当前turtle的交易总次数7 ^  o6 ^( P2 D6 {+ x! {1 K- b& Q+ C" p) v
trade-money-total
1 [: \$ y# ]& ^6 V0 c. R  x;;
与当前turtle的交易总金额
, G* [: ~1 S2 Q+ |2 M% Alocal-reputation3 T' F' A- B" N/ S% g$ U2 d8 R
global-reputation
, M* o0 U6 z, T5 c" `5 U* ocredibility
. d/ M9 x9 B! `4 };;
评价可信度,每次交易后都需要更新
! @# @+ u" f( `/ ocredibility-all' R" O  e5 K0 d; v9 O$ z2 `
;;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
& t, x2 b- P' B. h5 [6 |# k
9 ]9 c' z5 c1 c6 f6 `% ^;;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
6 r( L  Y4 j6 ]  @' A6 }credibility-one/ |( ]" F* T5 w' A  n6 n( X& 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! O. f6 i* [9 v) W
global-proportion1 l- Z3 _; o' O9 K& R
customer
( v0 z& f  |, m- l, i8 d% P8 fcustomer-no( ^. Y1 W* x8 U* M! x
trust-ok
, x4 b  T" @! M9 H. k" ~. o+ `4 |trade-record-one-len;;trade-record-one的长度
$ i* A/ _. r, q7 q  E]
$ n+ E6 Y% `. s7 E1 Z, I7 M
/ j' ~4 _) ~, S- ]' x;;setup procedure
" |) _) [3 M* E: O) {9 t3 A& }8 _% u7 ^9 M
to setup
3 s6 |6 S) E* z5 F6 B9 y; ?8 J5 i, V5 Z& M" _2 Y
ca

  t" H: @' _! ]0 g
) q4 U" e* V0 M$ @; n7 }initialize-settings

3 I" j( F3 z% p5 s/ K3 l
# [' S: ]0 b' V8 ~0 i; f# Qcrt people [setup-turtles]

$ P2 T- X' @7 E/ |7 D2 c9 ~, ]1 B
reset-timer

/ @, Q. r1 m1 u& ?6 z' v
+ o. E) t3 M1 X" wpoll-class
% k5 _; Y/ s4 N  R+ y
% h+ e! a; r7 L' O! y% E/ z
setup-plots
% N+ ^+ Y+ P5 ]3 K$ I# M3 q* e

( o9 f4 j2 \9 i) l5 x% ?$ _; |do-plots
2 b* D1 y' E  a1 h
end
, Y2 j: o3 c, N4 X2 c7 z6 K+ c
7 x7 B  I, }7 O  Z3 H' Y# \! O! Cto initialize-settings# R( t5 U0 n0 u# N0 ?. L" u' x

) e' {# \$ {3 _+ g; Rset global-reputation-list []

0 L5 V' D  s1 P% L
4 K' i$ k9 u2 w, H& q- R4 i* sset credibility-list n-values people [0.5]

0 l/ t8 p' T9 l7 `
5 g. e+ [1 G/ u4 v. kset honest-service 0

1 {& m/ p3 B6 T& U
7 L1 S, R! l( m* J" J, bset unhonest-service 0

: v( a' |& @0 t8 ~7 p; Z7 l
& j! N% v3 V1 mset oscillation 0

8 C4 ~) F+ @; |) c0 a. ^. r" M7 Q
set rand-dynamic 0

1 a( I2 ]6 n2 D# @, _- Kend
. D$ B; O2 b& }# P' z1 K; e: V* v6 u; y. y8 U+ x
to setup-turtles
  m; r# N9 t" b/ Oset shape "person"
, O, b8 n1 v1 P- c  \' ?setxy random-xcor random-ycor
0 n$ d3 k0 Q* Y: J5 g0 ~/ zset trade-record-one []# A2 a* {$ W1 R! K& ^  h1 x9 W

1 u/ s: n! r) fset trade-record-all n-values people [(list (? + 1) 0 0)] * o0 A& z& D3 h
! o3 U6 Y) V+ G* T0 m' I
set trade-record-current []
+ H7 P; w; J! @) ?; X7 f  @0 Q. c7 Wset credibility-receive []' y. ?$ O( R: q: ^3 v2 K7 c
set local-reputation 0.5, `9 T/ I  ?" ?  U; U
set neighbor-total 0
: s4 h9 |" O; E, X! G7 k; \set trade-times-total 0
7 Y$ D4 k9 B, ?set trade-money-total 06 a5 ?  h6 r( |- _  |
set customer nobody
4 C, q" f# H7 u# w5 uset credibility-all n-values people [creat-credibility]! n* H8 m; |6 U  ~2 @
set credibility n-values people [-1]2 D* z7 i" E: R7 x. _) O( w" H9 L5 H
get-color
; Y0 F7 g& C: l0 C

- @, j- L: I9 x' Q+ s& j  P2 dend
- M8 k' I+ J, g. L
$ o: f/ q+ I* o, b% `7 Y' N! Pto-report creat-credibility( d0 t9 s% I( i: I9 k; Z& O* w
report n-values people [0.5]
7 S/ }. r: d2 V. ?6 Bend
# K$ ?+ @7 X3 L2 F: D+ O3 r, F  d% O8 D8 |+ w5 |0 m: @) Z
to setup-plots
) u2 V+ Q3 r; ?
1 ]; A+ d6 N! U5 S$ u  n4 @( Fset xmax 30
* M/ e# l$ _, v! p  U
6 j$ E% J- P1 {4 z% A$ S: l6 D( O
set ymax 1.0

4 E1 E9 h# X8 P) u' b9 V
8 X- W9 i# z2 O% Q- \7 pclear-all-plots
6 N1 `6 `) g; d- s1 z! w

( j. _2 g& [5 a  N2 s  u% g8 Psetup-plot1

7 O+ _' v1 r* ^9 ^5 u3 s* W
0 @6 n2 p+ W3 t9 U3 R9 ?4 K* h$ Qsetup-plot2

2 A: i4 _* L* L+ K" h( G8 l9 ~( j! f0 J9 k
setup-plot3

$ T0 A5 I: h, t8 z& B+ Q- V5 Uend( M9 D( O+ [6 D5 c- q4 L3 I2 n
- W, k' m+ F+ k( c2 ~7 s: o' A
;;run time procedures
. O1 S- j, `3 q" g: W( l/ R* k8 e; o7 v- i4 v- }1 e  v  c
to go' Y' Q$ D) Z% I3 t7 {( W+ H6 f

6 T, K, Y, W* d0 p0 |! dask turtles [do-business]

( l, S" O# u3 N: _& Jend
, _6 E/ }2 g: ?$ |6 B/ K6 q
# j' ]. [9 X8 b. x2 {& z! |to do-business
% @1 V9 `0 _% @0 b
0 m1 J# Y+ k$ B9 Y8 F$ l% E' {
) D. c' S4 p+ o
rt random 360
/ X$ ]) J# Q! Z) B. h
; F& \4 Q3 g/ P& y& o# X6 ?5 J6 ]
fd 1

* n* @9 M$ u. F) |- i& S9 N2 z8 a+ ]. S& j% M7 F+ W
ifelse(other turtles-here != nobody)[

$ E3 d) u1 b/ P+ v* w5 o0 s% m
: a, H) D, c) tset customer one-of other turtles-here

# P8 p$ _' a% ^9 t0 [# h7 f  a2 V* D1 Y
;; set [customer] of customer myself
" j" w: U* M/ D) M- w: v

" y& z! W! s. D4 |set [trade-record-one] of self item (([who] of customer) - 1)
" \# Q$ r4 S; ^9 ^6 K! k' A[trade-record-all]of self
5 o: K% b  w1 i; X6 v* a. Y  P; x+ g+ {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ ]! f9 `, Z" E3 n7 m& |0 x+ K: J

7 Q1 c8 ^# v, J6 Fset [trade-record-one] of customer item (([who] of self) - 1); _) Y! W; A0 z# X2 Z, o, j! b
[trade-record-all]of customer

# p9 f$ d9 i6 m$ O% y7 A- K6 ?
( s5 D" B0 _' ?set [trade-record-one-len] of self length [trade-record-one] of self

/ z4 b- f2 ^' q# K$ m
. \" j8 v; u9 Y( }4 x/ ?' W& A: Tset trade-record-current( list (timer) (random money-upper-limit))
- T, y9 Y, j$ W) v
9 l; G" Y4 g, W; F+ G2 L3 y
ask self [do-trust]! _: Z: B' n5 i: T9 C$ E# x
;;
先求ij的信任度( d1 B- O: s. l6 s6 X
1 f# M2 g4 g5 p, Y6 {" h/ \( O+ [
if ([trust-ok] of self)8 f0 d6 P* Z, l. J8 M
;;
根据ij的信任度来决定是否与j进行交易[2 A4 c- I/ v/ a; P7 f  C
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. u- b% n6 F' w3 I+ Y+ u

( B+ Y6 Z( U) i/ N3 h[

% X. u2 V. ]: X2 S8 W; d" e& n; d. d0 ^  d2 S
do-trade

& t- q3 t( ]% H' ^0 U2 `. l, Q- F% X7 L5 P, M1 \
update-credibility-ijl

+ K( k; O+ X* g) E2 Y* }) D0 }0 A3 B
update-credibility-list
8 R& Z6 e4 ^. q! a% b: R) ^

6 Q5 n: v' R6 w! x" I6 I% B! `" Z
- r+ |8 v$ a1 ^5 ^5 v6 I" a  B6 Nupdate-global-reputation-list
1 x: x4 k- x% J# j  t+ }

, }- s: V; n4 i# g! ?4 lpoll-class
5 Y5 z( r1 w( m* K5 i2 ?7 @
) R/ m5 E' Y# c
get-color
  n& i* Z: M- K

  w4 c, f% [( [% b0 H5 U]]
: N" N& F3 @7 x5 }( G3 ^( ~
- a; d3 T7 W8 |& Y: N6 X% Q;;
如果所得的信任度满足条件,则进行交易/ i* r6 o$ V. p/ e" p
9 q6 K; V% O3 b8 a! j
[
, ~+ b2 X4 _# |5 h6 r: M9 f

) ^7 A5 r) m  X/ X+ E+ Y* _9 }rt random 360
4 g: R+ j. M5 t2 e! u8 N) g( y/ T5 i

  V4 @0 V" x4 R' ]0 ~fd 1
$ M" y- Q8 ^. I- H6 i# l5 [  m0 s4 z
# w' b2 X+ X( c' y3 z9 ^
]
5 h% L, S9 W, S4 b; p4 z
, R4 b$ ^, u$ b6 ?
end

/ b# @9 a# d# ~6 c7 i* b) d- P8 Z- w" t+ h; }
to do-trust
$ X! f- ^7 m/ _" D, zset trust-ok False
, g7 V3 P7 g: \) \8 \" F1 Z2 R- r& I) x
; d5 c  W+ b9 ~! C9 J& a
let max-trade-times 05 F/ Q1 R  H' ]! G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 G1 u" {" L( V3 J  _9 _, i
let max-trade-money 0' Z# l5 C8 k, {% b0 T( k) o" Z- S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 E, {+ v; q/ H" Y+ x
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 X; W3 z9 M0 ?5 i- T) t. I
8 x3 ?* a6 _7 B9 o8 y; ~4 ^& M$ f/ p
% J% b3 L3 c& o7 D! D; ?! ~
get-global-proportion
* G, h9 g9 s. g- N: w( {let trust-value
5 t1 C: b9 k/ q0 u2 ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

! E; J) z9 W1 Uif(trust-value > trade-trust-value)# h3 c/ k4 L' M' A/ O% \
[set trust-ok true]3 K$ G, v$ {* l9 u2 e$ X
end; a6 [6 k' k, P% j. t5 n; |0 X
6 J6 C! U% i) Y6 K
to get-global-proportion: Q' L3 h$ h9 _' }* l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* J( b: P  x) |% x/ t
[set global-proportion 0], ]) X3 p3 r! F% S6 `7 u( {7 o
[let i 0; V; H' h  @, G. h5 m: T+ `
let sum-money 0* w) Y: Q9 N, v  j  k# [+ J' U
while[ i < people]8 l! M+ D- Q! C8 _1 D7 U
[
! g+ C' ?2 j) R& J- e. b' O* f4 y9 wif( length (item i
! N* g: E2 Z+ F- L( ?& f[trade-record-all] of customer) > 3 )

" K) H% x) Z& r; ^9 w, M- a[  _2 l7 ]' V+ U& b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" j4 V& `7 Q" B' b! ?$ S]9 F" \# ]7 z" e: A) U
]
6 d7 J/ q# V1 |0 L  k. tlet j 0
! G3 j2 E3 B) @5 a. X3 clet note 0
" B9 T' h3 b, d- ?while[ j < people]8 d7 h+ v; O, C* D; G
[" K1 R2 W: W- T# S7 S
if( length (item i
6 Q# C% |2 M- G8 d0 s) H/ C: x[trade-record-all] of customer) > 3 )

4 }  _) c& [( o! n[% {5 O0 x' p% N) h" b4 v. f
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 l: K6 n7 L/ @4 C4 x6 K) [$ u4 ~) a, b[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ n7 B/ X! e* x7 M8 s& ]2 h( H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 y5 a( P$ _) ~- k]3 _1 l* z4 a, I/ S+ ^
]
+ q0 H% Y! l3 l0 ~. ], Lset global-proportion note7 `8 @) K" t. b) l
]
/ n5 N7 [5 F$ Z) Send
  y. q3 `! J, _; L2 G/ K# x' j- Z6 I7 h3 o
to do-trade
7 A- j$ s2 L5 H# K; z1 Q8 \# e0 K' J;;
这个过程实际上是给双方作出评价的过程3 {8 |- F' G% Y/ _6 M. `8 U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! H' d8 t1 ~7 }, \8 \# I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 V1 N4 F+ z) |) C9 Oset trade-record-current lput(timer) trade-record-current# ^5 V. t" V1 E; }3 x
;;
评价时间4 R1 }: e8 I0 n) a4 }/ v2 n
ask myself [2 Y( S2 G  X% i6 Q' [
update-local-reputation
9 h: A  e0 e" b/ R5 H2 F# `/ Tset trade-record-current lput([local-reputation] of myself) trade-record-current4 z9 l' Q6 d# g" W
]3 I; Z+ k0 A2 [/ }& ~( i' {7 P. ^9 ?
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ n% [+ V* @1 _7 }& {7 g' `2 ];;
将此次交易的记录加入到trade-record-one
  B# N$ \8 z/ a& o5 s$ Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! U* ^4 X9 E* ?# Qlet note (item 2 trade-record-current )4 [. F* i; P' M
set trade-record-current
% m* |' l3 F; U' ^# u- T7 D# A+ A(replace-item 2 trade-record-current (item 3 trade-record-current))
- j: k3 o, G- L2 z! `0 H/ k
set trade-record-current6 P2 h4 L( p, Z) Y
(replace-item 3 trade-record-current note)
* s6 m" n* F4 Y  W1 Z& d; @: e6 v, A% B% R: ~0 Y
+ D  _; ?$ C0 j$ D4 L
ask customer [' D& j( P" J# f
update-local-reputation! s9 w0 [' X/ w3 q
set trade-record-current! d$ _+ c4 C2 X  D9 w. {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  d. Z: N4 }! i- h' e
]
. f5 g/ M# r! ~7 d8 c: T  z8 W6 f- B! B; [! w, h8 X/ F( `8 W& T( |1 C. O

4 x7 {3 W$ r; [$ ]! G4 V9 @# cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- @: D$ e; ?1 N

2 J% f# u% t8 _$ wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  H. K4 W/ d  N, x( m9 }
;;
将此次交易的记录加入到customertrade-record-all
6 ]2 s/ g: L( Rend
9 i1 f9 h( M+ V* Z3 P: g  v: ]7 d' A6 o+ ^$ b' I
to update-local-reputation* {  N' s7 \# p1 T: R
set [trade-record-one-len] of myself length [trade-record-one] of myself
2 Y& E# `6 Y7 @6 `. `% z, R1 ~7 V, Q  |" I9 ~' v( l% O: Q$ o+ k

4 C- N7 e$ H. K* S+ z4 |. P;;if [trade-record-one-len] of myself > 3
9 L5 t$ ~0 P  G) H* m0 d
update-neighbor-total
2 U- |3 Q: [& @) z# T;;
更新邻居节点的数目,在此进行$ z/ |, E: H* _! B5 S
let i 3
5 M) ]9 u# m4 h& _- ~; glet sum-time 0  |3 |' W5 D' }5 p$ A) v% K  U
while[i < [trade-record-one-len] of myself]- G3 N1 t% Q3 M" v! m
[
) E0 A9 n  v  Q9 |5 Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* @5 ^; [9 H9 e; g- s! n0 X# Cset i
4 t* K/ @3 b! K( i + 1)
  z) W2 o% ^% p" e- E
]
% N) }$ e4 F; |$ @1 ]) \% flet j 3( `: S% p, v) g' V1 d; [+ I
let sum-money 0
& O) [8 m2 O* j5 ]) Vwhile[j < [trade-record-one-len] of myself]
2 U3 E  `8 m; K! C4 M  Q- }[
8 M4 G" _+ S# g% H6 H) v9 }3 Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- q4 s: L* ^6 ~' ?1 E6 b) Eset j
# |3 i% i+ K. _" @: }' W9 ~2 y2 b( j + 1)

+ X7 `2 D% R; A  y]- A$ z  x( S6 Z2 f$ ^
let k 34 n/ _, q# T4 h0 ]& l- w4 v" X: Q
let power 0
. W1 P6 u! ~( g- }8 b& L  wlet local 0  Z* z8 \. ~( V5 k! M7 a/ B
while [k <[trade-record-one-len] of myself]% @  O' @2 s  _+ A' E
[# w+ |: w/ B; o5 ]
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)
$ M+ V# ~# C; w0 yset k (k + 1)
! O$ f  ~  ?6 M- u2 u- r, J]
, z+ U) b4 z! j7 xset [local-reputation] of myself (local)1 T: [3 ?7 p7 I% H
end: U6 N' W2 ~- M! R5 E  M' \( f
% p- q/ w! S3 `: n- Y1 @0 z
to update-neighbor-total( f' c  [; f% f- x( B) k5 V

) L$ u! k; ]7 _' j* c& T6 nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 K. I  b, m6 p) K8 g4 w
( S9 p7 v$ V& ^7 a/ p  D3 s

8 I$ K+ ~1 P: Z+ Z0 P8 }end
+ k" n4 I3 i2 `- l
- y  i' w3 Z' L4 T$ gto update-credibility-ijl ; I0 O+ Y- T9 X; a4 c

: }. E; U' e; x- ?, s' Z" e;;
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。5 e; _0 c4 |, \; M1 h
let l 0
6 s3 v' l( h/ {5 l( @0 [while[ l < people ]
/ n- `- s/ g9 R# I7 C$ P;;
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- {( n3 o5 ]& T4 v2 q2 f* O
[
4 B2 T' I& p5 G; o* R6 @let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 |: ~7 U/ H$ W8 t+ a. K0 zif (trade-record-one-j-l-len > 3)9 t' e" ~4 }- A/ |; i
[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: E) G0 Z0 a4 s# S7 b
let i 3
3 d: {1 T- E* G; y$ p, {1 L6 ?let sum-time 07 f2 e2 T4 ]. J  R2 L
while[i < trade-record-one-len]
/ W/ W" s6 I  @+ E0 j- j[/ T8 y& O  b- A4 ^, i- j. d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): o# x1 D! o* C- l( }" ?
set i
! j: t. Q- D6 O7 i# V9 M- F( i + 1)
( Z; l* u3 L/ @: c5 w3 k. s: V4 I  h
]2 v7 N1 H  E, M% K
let credibility-i-j-l 0
  P8 [6 M: C& j) L; T& m1 j+ b  t2 ^; d; O;;i
评价(jjl的评价)9 F" J4 l0 T. G/ G' w# @5 B
let j 3$ ~; y% j' a$ h) \
let k 4
- p. n' ~+ Q0 U- U* h. @! |1 Mwhile[j < trade-record-one-len]) D" A& \; b" p( i
[: N, ~) [' q* r$ ]
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7 Q, w' G. Y1 V/ e- C# u
set 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)
  ?. [& C7 Y( W3 F  w7 p$ i6 xset j
! G# [, K+ R% f7 G: `/ R( j + 1)

" P: i8 s! \! J1 r3 f( p]
; L' n: J# `% @$ a7 A& uset [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 ))4 t0 x* v+ F5 D& j! A# G! c4 o
$ J" S6 w1 F$ K! }" S# E
, o" Z' x: e0 d; R6 d9 i
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ z6 q% C6 \( j;;
及时更新il的评价质量的评价
/ d, p2 s, e7 @: u8 T/ f6 _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% P7 e2 d2 _8 ?1 f8 E6 Eset l (l + 1)
" m% x" E7 u9 {) h4 w; w8 `0 []
" ~* D+ I' i6 g* e# send$ u; q3 u- L) w; z: }4 u; z: \! C

2 `6 I0 K8 I. z8 {. R, sto update-credibility-list
6 v% J$ n& T3 a" j) y# ~let i 0
0 ]9 M' Z* `* o6 Xwhile[i < people]
# K' m0 p" }0 d8 I: Z1 F4 c, r( B[$ Q1 d  l' |( S7 p
let j 0
9 u) ^% {( `; q" m. V. N7 Alet note 0
" n( R3 Q5 x/ p+ v$ Q/ e! A' ^let k 0) _8 @# t2 I/ P/ N
;;
计作出过评价的邻居节点的数目
: H5 X& J0 N3 Hwhile[j < people]- H9 _- _' f9 r5 x+ `
[9 b: f6 u( @- I2 P: X7 v
if (item j( [credibility] of turtle (i + 1)) != -1): C7 f8 c0 \+ A! v$ [% l# p
;;
判断是否给本turtle的评价质量做出过评价的节点
3 o0 r3 c6 i, @/ t8 j[set note (note + item j ([credibility]of turtle (i + 1)))
( Y" _$ w6 n& b2 O: I7 R;;*(exp (-(people - 2)))/(people - 2))]
2 D+ f4 Y1 A0 |  r  `0 I; N7 |
set k (k + 1)4 h! z2 W6 K' T
]
( T2 I( K" I) ]* L" t$ V2 ~set j (j + 1)
& O/ B- Y8 e4 y; l+ C4 V8 n4 j]
0 B% i6 u, K3 @) ?: Qset note (note *(exp (- (1 / k)))/ k)
7 h6 |- }$ S/ K/ L$ _set credibility-list (replace-item i credibility-list note)
3 \. d) x* C! U( W+ t/ hset i (i + 1)- q, ]+ r- ~/ d% M9 J5 v; i+ C" v
]' r, o6 \. S4 e3 B% s
end) j: E6 w$ S. g! s1 K& O7 g* g

# ~# ?$ W; U9 z  h3 z* ?to update-global-reputation-list% ?( X9 H3 l8 v! b$ a* N
let j 0
( X+ a& M' H- qwhile[j < people]
8 s$ E- q& z. Z" I; _3 r) y9 d[
; Y# ?4 H1 ~. b9 ~5 f# I1 Zlet new 09 ]# t. D- G' e% I
;;
暂存新的一个全局声誉( U8 a9 Y" z" D) m6 F
let i 0+ t  c, X0 d& Y2 |: Z1 ?7 `
let sum-money 0
( s0 j- K+ C: r7 S  B: Clet credibility-money 09 @& z, I1 `: l
while [i < people]
. V9 ]) @2 B. k( c1 Y[
$ W1 b: J6 @7 X. o* `( Hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 R% h* ~# S& A6 h1 Z3 }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ _% T- S" ^+ D; U8 `set i (i + 1)
: n4 V& x7 ^1 D9 ~; U]
- X. n6 U& E' t! X0 ^( E# r+ Rlet k 0" W' S- X/ }; X. X
let new1 0' V/ h! K4 i. V" s& Z" F; \
while [k < people]$ k, l3 h& Z/ R7 p1 o4 K7 r
[
5 K0 g/ B9 G( J5 B* Vset 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& w( v8 `* X" i7 |: e
set k (k + 1)5 V& @5 _2 o- W- q8 ?0 e
]
1 b0 I4 j, I3 ~# `/ F3 k% \: Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" S( H9 R1 Z4 h) b0 v3 ~1 @' v4 Fset global-reputation-list (replace-item j global-reputation-list new)
: F: A+ w, w8 ?) }set j (j + 1)
  O3 G7 r8 ?7 ]2 ^# []# Z' h- A) ?; Q3 [
end
7 E! F. W* t- H
/ T- P- I. G6 i
$ o% y$ Z: T1 R3 {3 b* z2 E' g
) \8 ^! b( d5 o6 y& x7 g; wto get-color
$ e- o( ~  [0 y, {* O( K
) t) }( I( j+ u! d( j4 Fset color blue

# t) N: P7 P# r$ P2 l& Z- Wend9 s: n8 O$ u. I

  s4 Y; f# H! k# N: c. Oto poll-class; w! m2 Q3 f3 N  a* `. [
end' M8 H4 i- l1 ]) B4 U
  h+ x) }# s- r! p7 g
to setup-plot12 c4 S$ [/ a% b/ N' w; G4 ]
6 v: \( w6 H+ v; a5 c4 |
set-current-plot "Trends-of-Local-reputation"

5 s: S+ e$ {) j  p" S& ?. A: q) ^2 n3 {0 V! o6 y
set-plot-x-range 0 xmax
$ }" h+ m9 {( Z, r- |; E
/ v; F2 e0 h# ~+ [5 G
set-plot-y-range 0.0 ymax
1 l! B, [+ m: ]! e# N  Y! \
end
6 B0 H! ~/ V) r! {5 S6 A5 ?6 r# L" T% L, p2 n% c; @
to setup-plot2
' K! P" @0 X5 {9 ]5 M. A, {$ {
/ ^. r" I' b; D5 r3 S$ Nset-current-plot "Trends-of-global-reputation"
8 w" R- z8 F& e+ i
# T, Q8 X* D& |
set-plot-x-range 0 xmax
5 J( J" q7 l9 C5 A

2 Z, C( e# b& e: ?  Kset-plot-y-range 0.0 ymax

9 `8 o6 F* O, e: qend
& H9 k! P6 f2 f& n
" F+ B) ]& b+ U, D% ~0 y" Nto setup-plot3
& z! B: Y! D- n# |- b. ^, E2 ^  e% c4 T
set-current-plot "Trends-of-credibility"

. p. h6 o) P2 _4 W: O. `
, U- X- B2 X# m" n0 A9 X2 l) lset-plot-x-range 0 xmax

( p! L$ d! W* R, x) O) V
/ L( W7 V+ m7 V! eset-plot-y-range 0.0 ymax

# g/ k& J( h5 q( c1 N  p  ?0 j. jend& e" u4 [; t% `

% Z& v& H" ?8 v+ Y% Q1 k9 bto do-plots
+ T2 t1 }# m/ Zset-current-plot "Trends-of-Local-reputation"
- F5 l. ^9 a9 w1 ]. sset-current-plot-pen "Honest service"- H$ I3 h  L6 Y) k: a3 @
end( u! u( T; `) K3 C4 w
5 h; t* `" w4 v) `5 s
[ 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.5 \& Z( j- l8 h3 o' T8 Z+ U

( m0 ]0 t5 P6 ^# z% @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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