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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:$ w9 \; E, O# \5 F4 K3 Z" N
to do-business : M" x2 I$ ?( ~1 `2 @; H
rt random 360! V( X: e8 Q5 X! ^0 d% @
fd 1( I- t4 l, ~( s
ifelse(other turtles-here != nobody)[; T. u. B( ], A- m; L7 x5 E1 d
   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.
7 K- c! K& o& h  t2 W$ e( Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , U2 b* h3 W" M' K, A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ ^( _/ U9 F2 n! f' w" J% \# X   set [trade-record-one-len] of self length [trade-record-one] of self- m& L- i( [% J  ]0 ~* M: g9 ^) A: Q
   set trade-record-current( list (timer) (random money-upper-limit))6 X- f- ~5 O( a

* F: I5 r3 q2 h( O3 [问题的提示如下:6 M; R: ?) r2 A  F0 D. t
4 c4 x* V+ a7 N, j
error while turtle 50 running OF in procedure DO-BUSINESS- L3 M# \. f7 c8 A
  called by procedure GO3 O# ]* V; h9 ]1 H3 y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 I5 @. I5 A, u5 f
(halted running of go)+ `$ N0 D& e: \3 a- W

/ I. G$ W6 L8 |9 X) X) j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~~
2 X# m' L7 `, y8 h1 _8 m3 u) F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7 K) R: i& K& X- M
globals[) p& l3 ]; l9 s, U. A' [9 H
xmax/ V1 X) a' ~$ Q7 c
ymax3 t7 n: r% \( V# p" V& v1 Z
global-reputation-list
& M+ \0 a# k6 n5 \
* e: R$ o- i* a;;
每一个turtle的全局声誉都存在此LIST
; F7 P, c, y. x, V+ Acredibility-list
* j) p+ H4 M8 m, R3 m. Y" }/ X;;
每一个turtle的评价可信度/ Y! Y" V+ q& ^. p3 _0 `
honest-service2 r7 t9 X! g3 m1 f7 v9 t+ F
unhonest-service
" v. Q3 p4 h- k0 coscillation6 b8 N$ ]0 K9 f9 s
rand-dynamic
, o% d% `  M! c1 I- h) m1 d7 u]
4 l% l6 Q2 @5 i( p( e( G  x, u% j  Z1 f! p( _3 a4 @& |
turtles-own[
8 P; R$ g# ~( d- o0 e& @trade-record-all4 n. E$ h) f0 [0 f) T6 Q
;;a list of lists,
trade-record-one组成! @4 D% y9 @0 ?" j" s- W
trade-record-one) V+ I* _- G$ L9 k/ n. d1 W: y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ p+ V: {# q% q3 Z* _/ H4 m& J; w6 }6 K: i
;;[
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]]6 E5 u  ~- I5 {* m" V
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]
! R; X4 y5 {1 m1 Q& ^; H/ V. q2 Ncredibility-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  l( R8 x- k( x
neighbor-total! E0 c: O; T) ^7 ~4 I
;;
记录该turtle的邻居节点的数目
8 _4 a7 C4 J. }1 utrade-time- {2 D( ]" R3 y$ e* H5 B
;;
当前发生交易的turtle的交易时间8 _: t& [: [% M* U1 V2 P
appraise-give
* N. o( ]2 \/ V4 R. X;;
当前发生交易时给出的评价
& U3 x/ o; |' x8 |appraise-receive
. E( ~) [6 J! w( ~* s: @' F$ ^;;
当前发生交易时收到的评价
- z  q& `: e, D3 X4 Pappraise-time
0 m" l$ ?. h2 T5 U) f4 ~/ ?$ i;;
当前发生交易时的评价时间
' g& i# n8 E$ u8 D( G( g  Jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# M) ~. t( O3 {' T0 C9 Gtrade-times-total
- v7 u6 h: u" F0 S! L! |& F2 A;;
与当前turtle的交易总次数
, I$ O5 m0 N" E6 M  utrade-money-total" P0 |2 S# G; `' M. x6 o
;;
与当前turtle的交易总金额
' u9 E' g! a3 t2 p; ?local-reputation
# P7 c4 }3 N: C+ Q& ]global-reputation2 _9 i$ h! p3 H; t: X' y; q
credibility% O8 s+ p- @8 f
;;
评价可信度,每次交易后都需要更新
7 Q1 E5 U4 a. x/ O5 u* ucredibility-all
% Z/ i4 V) t' X, ]1 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
5 z4 `/ n9 O) N. h8 q
' T. s8 Q4 H: c) E# ];;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0.56 [$ R' X, L- z" A5 w5 D' J# x- o) z
credibility-one" s& p" W  ]% V6 B% J- p0 \
;;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  ]3 i' A" S% C
global-proportion0 D7 ?- I! `+ y0 g, _
customer
. _0 S5 Y) U. [! q1 r* v9 v2 H# t  |customer-no
& a0 J* B8 F9 M- |; [, o& w6 ztrust-ok& x/ h9 ]) b: K' D) A/ a& o
trade-record-one-len;;trade-record-one的长度  ~) f+ x9 X) @7 `' j1 n
]
+ Z5 M- C! L% x( [+ \: R6 ^& Q' @2 x9 p* ?5 ?" w" C0 y
;;setup procedure/ p" ], R' P7 T: c3 {
, o# K( n; O( V* ~  j
to setup3 _6 u* o, o! \: L; Q& b8 [

0 B" x+ \, t4 m. l9 X1 I" Fca
/ h: i8 D. @7 @4 _/ T* b& ~

, c& g) x, _" \. ninitialize-settings

( P3 \6 }5 l) u# w9 X+ \- c' C5 |& y  |+ U( @% X
crt people [setup-turtles]
; i  [. V5 I0 L! q

' l3 [  T& C- J6 |1 B" xreset-timer

. ~; j* g( R5 g8 b: |3 ?
, n: U1 ?! ?3 X8 |7 U3 ipoll-class
. v0 J# F/ y( b8 M

, w, R) B. Z9 s% B, |setup-plots
0 L: {* s) ^  j# V9 @" v9 ?

+ \/ W& X; f& `' V. X0 m- Ado-plots
0 ?3 }7 `2 ?' f* L1 Z
end
  r( M7 r- j( M' c& p) K9 O7 C7 Z$ {! g6 _# v
to initialize-settings6 r# l( V7 }- K: f  W
5 d( L# x+ ~/ c3 s4 i% g; [
set global-reputation-list []

; G. ?/ k3 F7 L* |3 d
( `& c3 M# J% K: ?. s0 \set credibility-list n-values people [0.5]
1 C7 {  A" F- H* a
2 A* L) K/ z: l
set honest-service 0
" M+ W4 ~. X' N3 a& F

9 z7 R4 z( D, V5 Pset unhonest-service 0
: i$ R& U/ ]& ^7 }/ y

$ ?+ s5 b3 n$ N* Z% k! r& w  xset oscillation 0
& C: o" p) N" H, S
5 q/ P  u# K. i7 W& J8 B
set rand-dynamic 0
6 B' H3 K! W6 t4 G% l) U; {
end" u- c$ r5 I/ s4 O

4 ^7 P$ w0 F5 a  I' X; K! F5 vto setup-turtles 4 P7 S% h& D) h- `
set shape "person"
! J% }; f% _; G. ^setxy random-xcor random-ycor: B" ]! ~0 q+ D; n: ?
set trade-record-one []
7 a$ J) e& z1 N/ @6 v) F4 N
, f3 k) e6 a6 O: n; N* h
set trade-record-all n-values people [(list (? + 1) 0 0)] - K' M6 A$ K1 H+ V+ @+ g* b6 [

0 i) ]& u! C1 N; q+ Bset trade-record-current []7 ~1 m9 j" }3 N. R# Y
set credibility-receive []$ e  I7 ]6 F( M3 Q+ _
set local-reputation 0.5
9 b# C" y: \  U- f  zset neighbor-total 06 |, V# j" Z1 \: e, T9 r' N, t
set trade-times-total 0
% W! [& J, |& h0 }- T0 {) O" [set trade-money-total 0
6 g1 b7 |- p$ kset customer nobody
+ \  h: A' x$ l( j1 l3 [set credibility-all n-values people [creat-credibility]$ W1 ^! N) s; e# o: u$ \
set credibility n-values people [-1]) M% @, q! s0 K% j
get-color0 V! i9 v3 w" r4 X% O

, a9 Q% L* ^' S" f' Kend! _2 G. ~- h  \1 y

6 ?) z6 [' B9 @2 ]0 t6 Sto-report creat-credibility
/ L. O. ^6 \- [* U2 {$ treport n-values people [0.5]
, Q5 L& f, w/ G) J5 K# Xend, L4 H3 b  r: b5 D

% d% o5 j$ J: `to setup-plots
9 G3 u# D$ ^  M. h1 F# m6 K# c
# b5 o; w+ M9 K/ i3 jset xmax 30
$ R& Q' M; V9 L/ j. ]1 v
! v, x8 e7 g$ `* F- g0 M9 w
set ymax 1.0
) x6 w5 K- W$ Z# s! {4 y

. j5 {/ I( Z% R3 M  tclear-all-plots

7 Y  D1 Z) A. q& D* A0 z3 q0 Y$ b. g) w
setup-plot1
  c- @: y8 o+ j5 d. m: s- O
% s& V, s: L' F& N: l
setup-plot2
) j6 d: i( g9 ?5 c' o0 a/ {. J4 `
0 t1 H" T  V8 }: E, ~
setup-plot3
1 {& w, x6 X  D0 N; C
end
9 m8 h  ?2 Z0 y, Y6 e( N9 z7 M6 }* a; I
;;run time procedures
6 a7 @# j: Z5 Q) E7 i7 V7 a
" Y' ~& h' K  ?/ tto go' f* a5 ~. t8 r9 i3 _* a

( \) b% o* T+ [8 r6 T' J5 x8 a, \ask turtles [do-business]
) r) G, @9 z, L- `4 ^: c+ g
end6 x, H0 D' J% \+ n/ O  r/ Q+ L

; Y5 @. \) h* Mto do-business
7 u; V( p" Q/ z' J+ Q5 T! k& B; W

  U) ]7 X" q. F; i1 V+ K( ]! n& E; k# w: o$ h8 F5 _
rt random 360
2 z; }, t5 c' t$ k' ]6 }
* o/ C. k( z% |
fd 1
0 p" q8 u+ m& ^+ q- q
! H5 d, _- q' N% k6 C5 [8 l
ifelse(other turtles-here != nobody)[
0 B. o' @7 [& i

. S& a/ o# e% @8 i: xset customer one-of other turtles-here
: }7 w5 j2 ?. U: E  ?
2 i. ?+ w* s- N- i/ o8 F8 o% \4 S! r: e9 K
;; set [customer] of customer myself
, b% c9 Y. |. i# m8 J3 p
2 P- b" }( Y4 v7 G1 e' `
set [trade-record-one] of self item (([who] of customer) - 1)
5 Y* ^: _' J( r' n- w9 U[trade-record-all]of self/ a3 S" |! e0 k% G* M, Q% t+ ]+ m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" G/ B- m$ ^. p2 K. e. _
9 x7 z4 @' s1 U0 s
set [trade-record-one] of customer item (([who] of self) - 1)
3 J* b( U$ u: U4 @[trade-record-all]of customer

. `1 Q' p- {& m0 l) J; [) c' I5 y9 L, z; w/ S( c* |5 o5 a
set [trade-record-one-len] of self length [trade-record-one] of self

) @' p- b9 A4 \3 C6 W; t& [/ B! T" T
, c, n* q# ?8 u3 t+ B. J4 y5 \9 eset trade-record-current( list (timer) (random money-upper-limit))
/ i6 p1 W9 Q( N# E% o

2 @, x, n# C( V9 Wask self [do-trust]- m8 }1 H7 F1 }. H
;;
先求ij的信任度2 @. Z/ r: R  i: \: o

2 [7 l" p! X) q# `: s2 t1 bif ([trust-ok] of self)
' R' X( s# J% H  _* G;;
根据ij的信任度来决定是否与j进行交易[
- V/ I& B; X' y. p6 H" ?4 xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 S) j" J+ _. o8 H+ A/ y) G/ d3 j. V& x* d. @* a
[
# W, F1 h# p( X/ T% P" p

; W4 ?# z: `' T& K7 U( F5 ^do-trade
( p- D5 m3 S7 ^) A3 v9 T. R8 }5 ~) {
( E- C% s( A: q4 [- K( ~
update-credibility-ijl
* U4 H  D8 A9 \. J* Z. m; _; b5 T
, j6 M) T2 t8 k
update-credibility-list
- b. ]& T) G+ H4 |

( w3 h) k/ I3 Y  m8 d$ P8 Y2 W6 g/ M7 N  z" Z+ d8 h6 Q+ D
update-global-reputation-list
0 M: B- C) @: g
( O4 |# \$ q9 h$ k' S
poll-class
, N; x/ `- F" F: z

/ H9 V6 h$ k: f! O6 y# D# Eget-color

6 ?6 g( y+ ?4 X* a) F. `4 W- x; |! u8 R! T4 \$ q$ Y) D1 V
]]
- w  l9 _- _: D. _$ v' j" S) `, r6 J. z2 ]4 K5 ]- \
;;
如果所得的信任度满足条件,则进行交易3 V. J1 ]1 S8 W) f$ r

$ z; h8 j; _1 b[
+ f0 q) Z$ v4 j/ Y* R! p$ {
/ w' R: Q' \0 u- e- I0 A# M3 x
rt random 360
$ X4 a6 C! K9 U
0 N) C& m7 t! o$ u3 Z9 c# K5 C5 _5 p
fd 1
7 b1 T  P( }9 K; G

- l6 }+ v) w- V3 s8 a3 D]
1 v* I# U7 t: x; D  F+ R2 N  X

# X3 g& @& S( d* p- pend
& I8 [7 v  {# C8 u: b

( q! }$ o% l% Xto do-trust ) Z5 j2 o0 l, j' z: B
set trust-ok False
6 A3 d! `6 m* e. M' d2 P1 s+ D6 C9 f, d* q

, g3 K: U& p4 k2 X; Y" ^# g& ~: N7 _let max-trade-times 01 r  F; H/ x) G- \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  y/ A1 ?; r* v  plet max-trade-money 0
: m' S1 M) s: h& y7 e; A  Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: C1 n! a" V& R( S1 V) Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- J! L0 Y; {6 P, x( V; d' |
, _$ O5 i% z+ }! ^

8 E. L2 O: e; n/ bget-global-proportion
! o5 W1 c6 L5 }, Y( [( f- ~let trust-value
* S# w3 W( M3 B' e' O" B1 J, xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 V  e$ o9 c1 J1 g3 j( ~1 r: uif(trust-value > trade-trust-value)+ U1 O* [$ ?9 O/ I: n% d, H
[set trust-ok true]
3 o4 x+ b9 H, G% G5 a2 @/ [end
% Z: N7 A7 d1 l' W8 H" \3 w9 `8 a, E" k+ L  O4 y; e$ @
to get-global-proportion
. c' u+ W8 |5 ]/ d6 q- d2 a: ?: Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' |$ h, e. P: ?( N( Y[set global-proportion 0]
7 S# Q( ^3 q) k[let i 0( F1 ~* @9 n1 [4 Y- C$ g2 b
let sum-money 0
# P; }0 M( _; y1 X9 Bwhile[ i < people]& F  \- O# e" U7 w& f# O
[; g; @$ l9 w; D9 Z8 i9 ]
if( length (item i
# A6 W4 {. B! \/ o  k[trade-record-all] of customer) > 3 )

* m. e# M+ e  ~0 R8 V[8 S  n! _, y/ ]* P8 Y! y- B
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& I* B$ v/ e. H7 N8 ~]; O6 n+ R/ W8 \4 N% i: {( F. |
]
9 Z- P" o9 {, Q. [3 W( ilet j 0
& _9 g  R$ d6 q, Q0 `let note 01 h: ]2 F/ A5 t
while[ j < people]
4 R. x2 u# c2 }) s[% j% p% W# E( q- @) g
if( length (item i
3 Y3 ?. D0 e0 M; b# K[trade-record-all] of customer) > 3 )
9 w1 n! J0 C1 ~" T. Y# n3 u% _) H
[1 \: ?- }& h+ X7 u; u
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# D9 K) u* G, t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% g' e- i) S: j  i# i/ p8 X$ v; }" }/ ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& j. W7 X" h7 y/ c& h
]
- ?) S1 J2 v% ~. q. A% {4 e, N* @]5 o  [6 `6 |0 e, S, U
set global-proportion note8 [: R0 O* \  T' s
]  \7 q9 Z% p5 I  s5 [: V3 U; k4 V
end7 C  M4 Z' v, ]3 p4 t5 k2 Y7 h

, ?2 S" \3 }, ^8 Y4 Rto do-trade
0 |) E; y  G& V! ~! F; A: a;;
这个过程实际上是给双方作出评价的过程
+ ]( Y; N' o: i7 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( l6 _: A4 _! T( lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- z0 d) U  p6 k; _. U0 q, Q* F
set trade-record-current lput(timer) trade-record-current
- M- {5 g! K$ q7 C; T0 J2 g;;
评价时间
5 j$ ^2 B- u$ T% Q# J4 A# F3 ~ask myself [* K- l+ y5 ^% o; x' ~+ K3 {
update-local-reputation
9 O) }+ i( r+ D: h# Hset trade-record-current lput([local-reputation] of myself) trade-record-current* o; X7 ?$ y2 f
]
: h* e' j2 K9 I- v6 V; ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  q3 B5 c9 G% O;;
将此次交易的记录加入到trade-record-one
! m" c% U9 z# z) ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  e) Z, K: ~5 U' z9 S- M, Zlet note (item 2 trade-record-current )6 j& q2 j  n" u
set trade-record-current: A5 p7 d- P$ Z' `  O# M0 r' y$ n. r
(replace-item 2 trade-record-current (item 3 trade-record-current))

* C7 a& A8 S& n$ Xset trade-record-current; s/ K6 H0 C( D4 D( q
(replace-item 3 trade-record-current note)7 h4 H9 u% F! ?: v/ f

  w- F! e( R- H+ J  b* i

$ }0 U* t! x0 y7 U6 i9 Y' ]ask customer [- R8 f1 K$ G: |9 Z
update-local-reputation
& {) P( j# |( F* x" H: {7 Y* Oset trade-record-current$ b8 Y. P& l, ]# L  j! F) Y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. K8 u$ V& ?2 S" R3 G
]
: ^% \) w4 T8 J& u8 t$ e# ]$ T/ Z) W4 v
' e, u# g) ?' s5 K  T5 o
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; a& z5 ^8 C1 z3 \' \) M' y

4 F5 O' |- z8 z' Cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( c" @0 I; k: K$ m! K, ^
;;
将此次交易的记录加入到customertrade-record-all
' n' b! f! a7 `end. ?9 p3 D0 j' ^! V/ H; I- C3 U
1 ?6 H7 |8 x& M+ V, C
to update-local-reputation
$ b/ _( P$ P, mset [trade-record-one-len] of myself length [trade-record-one] of myself# o$ u7 M, U! Q7 w6 @3 U  x
- N( E* S( m- L
% y3 q1 a% e+ Q2 l3 a9 {
;;if [trade-record-one-len] of myself > 3

7 N: j4 Z3 {# t* z2 u6 A: Lupdate-neighbor-total7 T0 e/ p, S7 }6 N
;;
更新邻居节点的数目,在此进行
4 A2 z8 s& o, ~7 ^. f1 f6 slet i 3
! j5 ^) U" w- Q& Z  R4 H/ n# X7 r4 Jlet sum-time 0
" R  u5 ]$ q3 vwhile[i < [trade-record-one-len] of myself]
7 c- i: Y" D7 v[
( D0 `! a5 V. `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* g) T7 ^6 ?3 \, i1 W, _  d
set i0 R7 J) x; `; P
( i + 1)

/ q2 P5 l$ C$ T5 H]
& N$ f5 J& t, [2 _7 Plet j 3
6 V3 Y0 J/ U' S; b2 z6 glet sum-money 0, X/ _2 `% l9 }, v, X0 k
while[j < [trade-record-one-len] of myself]
4 [4 G* S; z, B+ j[
# _! b6 u; e. {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)
8 C" S' A0 \/ r/ ^8 `5 h# [5 Nset j3 P5 B: R- v- y5 C0 C9 e+ x( M
( j + 1)
" E$ T( q( Z/ X: \
]2 p% T0 y6 B" ^# l* I: F: x
let k 3, q/ {* r1 @- g2 M4 }
let power 0
# c/ }2 W' ?1 d: n- s# U/ m6 q7 {5 _let local 0
. p) Q  G, m; D% a6 d. w6 y6 Lwhile [k <[trade-record-one-len] of myself]
0 j$ |2 ]$ m! ~/ N: i1 z  k[  h0 s, `5 a$ N+ @: ?
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 @; F- w, I* b, O+ ?" W
set k (k + 1)& ?8 y4 H: R8 P7 A( r# r
]& \* k# d7 r/ [/ W% I/ V- w& U
set [local-reputation] of myself (local)
' v& O0 z5 v/ y) j9 \' j! xend
+ M0 I" F% `  m: G. m3 t
5 C7 o+ g7 ]9 m+ u: D; K! ?to update-neighbor-total, f, @' K8 w- e: `3 M: |5 G

; f' e+ o! `/ x  Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  a6 q( m- U: m# }& _$ y0 m
' M0 U7 Q5 l' A

% M% _1 M3 R0 l8 [) F( ]  r6 |" p& v- Dend
6 a. E4 u3 y: S. D4 N. ~
  H& g, m3 K: n8 Kto update-credibility-ijl $ x4 x! I" Y* ?+ ?$ q1 u! t. Z

0 Q6 e8 w9 a8 p;;
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。' |4 c( u; X" K# `$ l
let l 0" G% S) D4 n8 ]
while[ l < people ]8 S% j2 g. N4 D2 B' T
;;
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
! ^8 d4 r. d+ K' V$ A8 c# r: s[
' x9 Z, [: D/ \/ n( B5 |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" v. T7 H; \# p8 N9 M* A
if (trade-record-one-j-l-len > 3)( t! f% a9 d) E
[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
/ A/ `) v, }( ]* I5 K* Mlet i 3
2 j4 p; Z8 ]- v. Y  Slet sum-time 0
) P" n0 f4 f- x0 Lwhile[i < trade-record-one-len]5 t- ]# _: \$ w" f
[
4 ~5 x* j* d7 \9 S+ a4 \set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), F1 l( Z7 r; L
set i' [( i/ A0 z  o* \% y) l
( i + 1)

" b; Y! E% U; ~]8 `% ~6 Q! U2 u7 o
let credibility-i-j-l 06 F% p9 q! Z5 q, z" f6 g. S
;;i
评价(jjl的评价)
( @5 T1 i6 y9 }let j 3
# R3 t6 s7 C% N2 B' L; Ylet k 4
- v& ^* y8 g* i4 }. r, y3 f, Uwhile[j < trade-record-one-len]
% q1 j% D+ u; R* W0 E[9 T2 ?6 T- P1 C8 i1 d
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
8 A0 g; h! |. zset 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)3 o, X, m6 s( W% T* W
set j
) @4 S9 E7 o& c3 |( j + 1)

5 U6 `: o9 ~  \# t9 f]
5 x. |1 K+ q6 {0 ~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 ))
+ p( C1 {$ y# n- F- G
1 ~; @) ^3 j9 b6 F  ^4 @
9 I" U4 j+ ^: w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 ^' D) e: b  Q4 {/ _$ W1 g7 X
;;
及时更新il的评价质量的评价
5 i, C7 v( o  Q9 t! V6 b5 zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ {& B+ q! Z9 _6 {set l (l + 1)
6 j) a# }8 e- T]
9 H7 h* l2 @2 a* n1 send
, M. Y. i/ w  T1 S- E8 B4 [/ I' t7 U7 ^! N
to update-credibility-list
6 ]' E8 E9 e' O( Tlet i 0
- x% I: [1 a7 Q: Swhile[i < people]( L) p( w' k9 P7 d
[9 M( ^! m3 d6 w+ n
let j 0
# H% m& [( T( U1 H7 l# p; Ulet note 0+ @/ ~! D" _( s3 x- \. t
let k 0; \& x# _- i. q5 z3 N' }& i
;;
计作出过评价的邻居节点的数目
9 v0 J' g" X$ Twhile[j < people]
2 i6 B- J! F9 M& }# y2 I3 |4 x[1 @" ]( A4 g8 h0 }
if (item j( [credibility] of turtle (i + 1)) != -1)
' Z$ ]% Y3 \7 i) Q9 X;;
判断是否给本turtle的评价质量做出过评价的节点
. m5 K) o# S/ g# K2 v( Y[set note (note + item j ([credibility]of turtle (i + 1)))
! Z/ z  H& }% l, x. e# \) W) ^% }* `;;*(exp (-(people - 2)))/(people - 2))]

5 U/ s5 ~7 H' e  b9 e, `$ ]set k (k + 1); [1 ~9 V& A2 P7 a9 y7 R* s  F8 _
]
& T+ n4 J+ i0 V* [- Xset j (j + 1)
8 D9 g+ g" n6 X( t& ]  _]
- v$ G2 l: T" n/ a9 \4 ~set note (note *(exp (- (1 / k)))/ k)0 I/ }% U: m" t1 Y* a8 \. r
set credibility-list (replace-item i credibility-list note)
+ y+ {2 L  e6 y3 T5 @set i (i + 1)4 k: x/ `: p/ G4 f% d3 p4 y
]5 @5 Y0 g$ [( W6 R6 Z* C
end
/ a2 e6 E) R  X6 O. T( u- o9 A0 [- E4 y; o( E4 j% r- w
to update-global-reputation-list
' V5 @( L# s+ c1 i# M5 H) xlet j 0% j3 F5 x, ]/ L6 O7 R2 O
while[j < people]
' o! y" }7 a& I0 J) Y9 w8 B[3 i7 _9 F$ v8 m$ T: N9 \& V7 f
let new 0
# l( R" ~! e0 z/ j; [' ];;
暂存新的一个全局声誉2 `3 Z; j# d* M- M2 W: K2 T# F0 d, U
let i 0' o7 t9 H- P4 h# b( C8 c
let sum-money 0
2 `. `: c4 S  f" l. Q7 b2 Q7 Hlet credibility-money 0
0 Q# z$ z3 y6 v+ \2 Q' Swhile [i < people]* z0 V& y% W. [+ d1 o. Z$ _) s. p2 e
[  e% `% \0 Y  G2 @8 B1 |: u% r, S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& v( I. a# @5 u4 W- ~5 E6 b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  D0 S7 B) [! [' j, |, R6 ~set i (i + 1)
: n4 o2 ^/ R4 K) t' H; Q! b]+ d9 h) H# j2 Z; v( Z; P
let k 0
- V5 Y* |5 y7 J- alet new1 0
. U$ [) O* T( r8 J" O7 bwhile [k < people]
- @  Z4 H: U/ Z/ N0 x. R[
2 V8 x9 L* A# k8 Oset 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)
5 h+ U/ f9 i3 P2 G- z* vset k (k + 1)+ K# P8 L( ]  Z2 Z' Q
]
) l6 I. x$ D" H1 tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 L! z$ d7 e0 Y, m  N
set global-reputation-list (replace-item j global-reputation-list new)0 _& Q$ ~# j" ]8 N5 {" x
set j (j + 1)2 Z5 o0 z) e3 ]' H3 Y, H
]9 t6 w$ N% E' _9 |
end) i. F; F1 n" ]" X

" F3 h6 |. ~4 @5 D! N
+ W! B, _/ z0 `, r$ k7 h
7 b4 j: {' _) N4 v$ n, x! v) Jto get-color
7 p' o4 l& A5 p4 {% W" U& E0 @# }; u7 ]; k# d! k2 L8 y" C
set color blue

7 d# u: e; H9 \  Uend/ d1 \4 J! n  b  [9 M: L

" y* Q9 A1 _0 p8 `0 f! I6 qto poll-class, @8 ]: z$ J4 J
end: {% l) b$ V  Z: _/ k
- B& ?4 h# R, X$ J. }
to setup-plot1
/ p  g/ P: z; N4 N+ i9 d/ U
3 m  B# G. h' Y& q2 i9 U2 q6 Oset-current-plot "Trends-of-Local-reputation"

1 G) }) i# c+ O: K- }+ A$ \/ B# k9 q! c' N7 Z7 ]* @
set-plot-x-range 0 xmax

( w0 N! J$ ?$ Z- t
7 [! k1 |* O# Aset-plot-y-range 0.0 ymax

0 {$ a5 _- P! w3 _( I4 |end
8 N5 l6 J) J8 }  d3 A( ]2 ]4 m" `. Z/ K8 z7 `7 k8 S& k/ Q5 T  v
to setup-plot2- {7 k0 b3 t9 M, h# `

  Z8 r* y, G- Q0 c* x8 t( n8 C" ?set-current-plot "Trends-of-global-reputation"

( a& V+ \; y/ ], ~+ O9 R0 |- _5 S
8 n6 S- s1 Y- C& v% Xset-plot-x-range 0 xmax
  Z+ J0 r6 {* s( i( C; z* E* o: W+ x

8 M2 ?# m' s; R! n7 `- G* w" o3 Aset-plot-y-range 0.0 ymax

9 Q# x) I( \1 w3 K' zend4 z7 J5 }% D: C$ Q$ d9 D) i' R

" k, N( p/ ]" @to setup-plot3
& G" _2 B* m& L% O9 Z$ o
2 a1 N$ I# U, {set-current-plot "Trends-of-credibility"

( y( T. F$ O; `9 E
6 ^. t3 _/ `4 X4 H7 ~' k+ f( [set-plot-x-range 0 xmax
. h0 F8 j7 V, I* b; H6 u. }; H; T0 N
4 r  }2 j8 W& U) }
set-plot-y-range 0.0 ymax

" u- K, [) k! K1 B4 mend( e% O3 ~3 v% z5 W* ~8 O9 Z, E" l

6 V  X( W/ r4 H, h2 {. B0 v0 sto do-plots
$ z3 v& }1 [. rset-current-plot "Trends-of-Local-reputation"
/ \' A5 z- V, ^set-current-plot-pen "Honest service"
& G& l+ m, q9 m  z- Hend
+ K  W. L' t: `9 k' N
" S0 D" S1 X7 z$ F5 l. T[ 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.0 z! o5 p6 f  \& c- y2 q
6 z, P) k& J/ a
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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